SlideShare ist ein Scribd-Unternehmen logo
1 von 7
Downloaden Sie, um offline zu lesen
1
‘Sufola Batishak’ A Good Quality Pechay Variety Developed by BRAC for the Vegetable
Growers
Sitesh C. Biswas*
BRAC Agricultural Research & Development Centre, BRRI, Joydebpur, Gazipur, Bangladesh
*Corresponding author: sitesh.cb@brac.net
Abstract
A good quality pechay (Batishak) has been developed at BRAC Agricultural Research and Development
Centre (BARDC) to meet the increasing demand of fast growing leafy vegetables in the vegetable market of
Bangladesh performing conventional breeding method introduction followed by reselection method. Compared to
check varieties this newly developed pechay variety (commercial name Sufola Batishak) gave higher yield, exhibited
late in flowering and it was found to be tolerant to major diseases & pests as well. This new pechay variety is also a
year round variety and besides its open field cultivation it gave a very good yield when cultivated under polythene
tunnel in the rainy season during the crisis period of vegetables. At BARDC, satisfactory production of the new pechay
variety was also noticed following cut-and-come-again method. Due to the better performance of newly developed
pechay line at the farmer’s level it was released by the BRAC Seed Enterprise Division giving the commercial name
as ‘Sufola Batishak’. Its fresh vegetable production has been recorded as 25-30 Mt/ha. Since at the growers level a
very good seed production performance of this ‘Sufola Batishak’ was found in Bangladeshi agro-climatic condition
this pechay variety was found to be a profitable vegetable for seed business and sustainable batishak cultivation as
well in this country.
Key words: Brassica rapa L. Introduction, Leafy vegetable, Nutritious vegetable, Pechay, Selection, Sufola
batishak
Pechay or Bok choy or Bati shak (Brassica rapa) belongs to the family Cruciferae or Brassicaceae
(Gonzales et al. 2015) is a quick growing short aged popular leafy vegetable of China, Philippines, Eastern
Asia and South East Asian countries and this very profitable nutritious vegetable requires cool and moist
environment for its better growth and development. Its leaves are consumed as raw or in cooked form
(Aglosolos et al. 2021) although consumption of raw leaves are recommended since nutritional value is
diminished by cooking (Prado 2014) and its petioles also considered as a preferable part for preparing
delicious dishes. In the Philippines, pechay is believed to be an oldest green vegetables and this particular
leafy vegetable plays a vital role in its economy and the nutrition of its people (Gonzales et al. 2015). In
Bangladesh it is relatively a new vegetable and so far only one variety of pechay has been released by
Bangladesh Agricultural Research Institute (Razzaque et al. 2000). Although pechay can be grown in this
country almost throughout the year but its seed production is restricted only in the winter season (Razzaque
et al. 2000). Owing to its excellent flavor, good taste, relatively higher production of fresh vegetables within
a very short period and has good health benefits due to the presence of calcium, iron, carotene, phosphorus,
vitamin C, fiber, antioxidants etc. (Utama and Wibowo 2022, Baek et al. 2021) gradually it is becoming a
profitable vegetable for the Bangladeshi commercial vegetable growers. Besides its cultivation as a field
crop; it can be grown as a suitable vegetable for the roof garden and balcony gardens as well. Pechay can
also be grown hydroponically (Baek et al. 2021, Briggs et al. 2019, Nair and Irish 2016). Considering the
importance of pechay as an important leafy vegetable and to develop a new BRAC pechay variety, a Filipino
accession of pechay germplasm (Pechay 01) was introduced at BARDC (BRAC Agricultural Research and
Development Centre) during the year 2007. After a series of cultivation and reselection from the Filipino
accession a new advance line of pechay was developed.
Seeds of pechay received from ATI (Agriculture Training Institute), Manila, Philippines were sown
on 10.11.2008 in seed bed for its successful germination and emergence of seedlings. Fifteen days old
healthy seedlings were transplanted on 26.11.2008 in the main plot consisting 0.94 decimal of land
maintaining the distance line to line as 30 cm. and plant to plant as 15cm. Standard pechay cultivation
2
practices were followed to ensure better plant growth and development. At 21 days after transplanting
(DAT) data were recorded from randomly selected ten plants as in Bangladeshi consumers usually prefer
to consume pechay at this stage and the data have been presented in Table.1. First generation data reveals
the fact that the performance showed by the Filipino pechay is relatively satisfactory. Observing good plant
growth and development rest of the plants were allowed to grow for seed production. Normal flowering
and excellent fruit setting was observed in the pechay plants in Bangladeshi agro climatic condition. Seeds
from healthy plants were harvested and stored carefully at the end of the season. Healthy seeds obtained
from the Filipino stock (Pechay 01) were sown in the next year for growing second generation of pechay
and again selection process was operated for its further improvement. Following the same procedure up to
the 6th
generation a relatively homogenous group of pechay plants was obtained which constituted the
advance pechay line (BRAC Pechay) (Figs.1 & 2). A comparative analysis of data between the 1st
generation
and 6th
generation has been presented in the Table. 1.
Table. 1. Comparison between 1st
and 6th
generation morphological data of BARDC developed
pechay (Bati shak) (at 21 DAS).
1st
generation
Plant
height/plant
(cm)
Plant
spreading/plant
(cm)
No. of leaves/
plant
Length of 3
fully expanded
leaves
(cm)
Width of 3
fully
expanded
leaves
(cm)
Plant wt./ plant
(g)
Mean 23.14 35.90 11.97 28.45 15.61 204.34
Range 21.00 -32.86 31.9 -39.26 10.04 -15.52 27.09 - 30.43 14.30 -17.04 142.43 -250.17
S.D ±2.26 ±2.48 ±2.48 ±1.29 ±1.22 ±34.85
6th
generation
Plant height
/plant (cm)
Plant
spreading/plant
(cm)
No. of leaves/
plant
Length of 3
fully expanded
leaves
(cm)
Width of 3
fully
expanded
leaves
(cm)
Plant wt./plant
(g)
Mean 30.27 33.50 10.63 28.95 16.85 236.47
Range 28.00 -33.00 29.00 - 37.00 10.00 - 11.00 25.67 - 31.33 15.00 - 18.67 156.90 - 320.10
S.D ±1.43 ±1.91 ±0.51 ±1.29 ±0.91 ±47.49
Compared to 1st
generation in the 6th
generation plant height and plant wt. per plant were found to
be increased considerably (30.81% and 15.72% respectively) while plant spreading was found to be
decreased (7.16%) which may due to the operation of selection process towards the more compact and
heavier large plants in each and every generation. Table.1 also reveals the fact that uniformity rate among
the plants of the 6th
generation population has been increased compared to the 1st
generation plants. The
main features of the new BRAC pechay line are:
1. Quick growing short duration leafy vegetable having delicious taste.
2. Plants have a nice vigour, stems are fleshy, white and broad deep green leaves are thicker with
crispy texture and white petioles.
3. Very easy to cultivate and free from the attack of major diseases and pests.
3
4. Production per unit area is appreciably high compared to traditional leafy vegetables viz., red
amaranth, radish, spinach and the vegetable form of oil seeded Brassica (Sorisha shak).
5. It can be utilized in the international standard hotels and restaurants and also as an exportable
vegetable commodity for the super markets as well.
6. Plants having 14-15 leaves with the leaf size- 30 cm X 17 cm and vegetable harvesting can be
started from 21-22 days after transplanting.
7. Production of fresh vegetable is around 25- 30 Mt/ha.
8. Seed production of the new pechay line is also profitable as on an average 20g -25g of seeds
can be produced from a single plant.
9. This good quality pechay line can also be grown as a suitable vegetable for roof top and balcony
gardening.
10. Multiple harvesting of vegetables is possible from this pechay line following cut-and-come-
again practice.
11. Late bolting pechay line which ensures higher production and good quality.
After the development of the new advance pechay line (BRAC Pechay) this promising line was
tested in the preliminary yield trial for its suitability as a commercial variety. For this purpose,
seeds of the advance pechay line were sown in experimental plot along with the check varieties on
05.10.2014 in 3 replications. Results of the preliminary yield trial has been presented in Table. 2.
Fig. 1. Newly developed pechay line in the experimental Fig. 2. A single plant of BARDC developed
plot of BARDC. advance line of pechay.
Preliminary yield trial showed the superiority of BRAC pechay line over the other two check
varieties in all the characters (Figs. 3, 5 & 9). It was also identified as an early variety and gave higher yield
too (Table. 2). Data showed that the BRAC pechay line had 10.45% higher plant wt. than the pak choy of
Momin seed and 9.20% than Bati shak of Rajdhani seed. Similarly, the newly developed line recorded
8.42% increased yield than pak choy of Momin seed and 4.30% higher yield Bati shak of Rajdhani seed.
Critical observation also revealed the fact that BRAC developed line is a late bolting variety as well (Fig.
4
4 & 9) and it produced on an average 20-25g of seeds per each plant. Haunold (1981) also opined that along
with introduction, reselection is a less expensive breeding technique through which a variety can be
improved in a relatively shorter time. It can be mentioned here that this advance pechay line also exhibited
nice performance when they were grown under polythene tunnel during the rainy season (Biswas 2012). In
Bangladesh, during the monsoon period only few vegetables can be grown due to severe waterlogging
condition resulted due to heavy rainfall but if the pechay can be grown under polythene tunnel the crop
usually give a very satisfactory performance and the farmer can earn a very good profit.
Table. 2. Mean values of morphological characters of BARDC developed pechay and check
varieties (PYT).
Variety Source Plant
height/
plant (cm)
Plant
spreading/
plant
(cm)
No. of
leaves/
plant
Length of
3 fully
expanded
leaves
(cm)
Width
of 3 fully
expanded
leaves
(cm)
Plant wt./
plant
(g)
% of
increased
plant wt.
in BRAC
Pechay
than
check
varieties
Yield
(Mt/ha)
% of
increased
yield in
BRAC
Pechay
than
check
varieties
BRAC
Pechay
BRAC 29.20±1.01 36.59±2.68 9.52±0.63 25.57±2.62 15.57±0.91 83.97±3.08 - 4.12±4.32 -
Pak
choy
Momin
seed
29.02±0.87 33.02±2.49 8.52±0.27 25.50±2.22 13.65±0.28 76.02±2.30 10.45 3.80±3.41 8.42
Bati
shak
Rajdhani
seed
26.59±2.20 31.20±1.46 7.82±0.42 23.75±1.04 12.47±1.02 76.89±7.50 9.20 3.95±5.34 4.30
Fig. 3. Comparison between BRAC pechay (BARDC) & Fig. 4. Late bolting nature of BRAC pechay
check varieties. (BARDC) variety.
5
Fig. 5. Preliminary yield trial plot (PYT) of BARDC developed pechay line along with the check varieties.
Newly developed pechay line was also tested for Cut-and-come-again practice (Table. 3,
Figs. 6, 7 & 8). Fresh pechay seeds collected from the new line were sown on 4.40 m X 1m bed
for this purpose. Excellent seed germination was noticed and since the growth of the pechay plants
were relatively faster, within a few days the plants attained a height of 20-21 cm and became
suitable for 1st
harvesting of leaves at 30 DAS (Days After Sowing). Young pechay plants with
tender leaves were cut at 2-3 inches up from the soil surface and a total of 3 kg of leaves were
collected at 1st
harvesting. After 1st
harvesting, the excised plants were provided with normal
fertilization and irrigation practices. In response to the proper cultural practices, each of the cut
plants started to produce new leaves and the emerged shoots were again found to be suitable for
2nd
harvesting after 14 days i.e. at 44 DAS. However, to gather more information regarding seed
production from the cut plants, the plants were kept intact for seed production. Flowering in the cut plants
was found to be delayed by 4-5 days than normal plants but excellent flowering as well as fruit setting were
observed in the regenerated shoots of the excised plants. Interestingly, good quality pechay seeds were also
obtained from these cut plants at the end of the season. Liu and Liu (2023) also recommended the practice
of multiple harvesting of pechay when it is grown at the homestead level. In a separate experiment, Biswas
(2012b) reported a very amazing result in spinach applying Cut-and-come-again practice.
Fig. 6. Pechay ready for Fig. 7. Multiple harvesting Fig. 8. Normal (L) & sprouted pechay
plant leaf harvesting. practice in pechay. (R).
6
Table 3. Comparative study of morphological characters of the normal and cut plants at 45
DAS).
Status of
the plant
Plant height
(cm)
Plant
spreading
(cm)
No. of
leaves/
plant
Length of
leaves
(cm)
Width of
leaves (cm)
Days taken to
1st
flowering
Cut plants 31.83
(30.00 - 34.00)
28.17
(25.00 - 30.00)
7.33
(6.00 - 8.00)
30.06
(27.67- 32.33)
13.08
(11.33 -16.17)
47.00
(47.00 - 50.00)
Control 25.67
(25.00 – 26.00)
26.33
(26.00 - 27.00)
12.00
(10.00 -14.00)
24.67
(24.00 - 25.67)
11.34
(9.67-12.67)
42.00
(42.00 - 45.00)
Fig. 9. Better performance of Sufola Batishak (Left) in the Fig. 10. Sticker used on seed
experimental Plot of BARDC. packet.
After successful Advance Yield Trial (AYT) and Multilocational Yield Trial (MLT) this
BRAC pechay advance line was released as a commercial variety giving the name ‘Sufola
Batishak’ and BRAC produced 300 kg seed for marketing during the year 2017-18 (Fig. 10).
References
Aglosolos, M. P., M. J. L. Regencia and F. E. Arcilla Jr. 2021. Effects of vermicomposts produced from
cow dung, saw dust and shredded paper on the growth rate and yield of Chinese pechay (Brassica
rapa). IAMURE International journal of Ecology and Conservation. 34 (1): 36-49.
Baek, M.W., H. R. Choi, T. Solomon, C. S. Jeong, H. O. Lee and S. Tilahun. 2021. Pre harvest Methyl
Jasmonate Treatment Increased the Antioxidant Activity and Glucosinolate Contents of
Hydroponically Grown Pak choi. Antioxidants. 2021,10, 131. https:// doi.org/10.3390/antiox
10010131.
Biswas, S. C. 2012a. ‘Cut-and-come-again’ method for harvesting spinach in Bangladesh. FEEDBACk
from the field. AVRDC- The World Vegetable Centre. Global Technology Dissemination. P.O. Box
42, Shanhua, Tainan 74199, Tiwan. March Issue. p. 3.
7
Biswas, S. C. 2012b. Vegetable cultivation in the monsoon season in Bangladesh. FEEDBACK from the
field. AVRDC- The World Vegetable Centre. Global Technology Dissemination. P.O. Box 42,
Shanhua, Tainan 74199, Tiwan. September Issue. pp. 5-6.
Briggs, H. R., A. M. Tallontire and A. J. Dougil. 2019. Exploring the Contribution of Vertical Farming to
Sustainable Intensification from the Point of View of the Innovator and the Farmer. Sustainability
Research Institute, Leeds, U.K. pp.1- 44.
Gonzales, L. M. R., R. A. Caralde and M. L. Abun. 2015. Response of pechay (Brassica napus L.) to
different levels of compost fertilizer. International Journal of Scientific and Research Publications.
5 (2): 1-4.
Haunold. A. 1981. Hop production, breeding and variety development in various countries. The American
Society of Brewing Chemists. Inc. 39 (1): pp. 27-34.
Liu. H and G. Liu. 2023. Bok choy, An Asian Green Leafy Green Vegetable Emerging in Florida. [Online].
Available at: https://www.researchgate.net/publication/342455544_Bok_Choy_an_Asian_Leafy
_Green_Vegetable_Emerging_in_Florida.
Nair, A. and L. Irish. 2016. Commercial Production of Pak choi. Iowa State University Extension &
Outreach: Ames, Iowa. pp. 1-4.
Prado, A. J. 2014. Effect of organic fertilizer on growth performance of Brassica rapa under La Union,
Philippines. E-International Scientific Research Journal. 5 (4): 1-6.
Razzaque, M.A., M. A. Sattar, M. S. Amin, M. A. Kayum and M. S. Alam. 2000. KRISHI PROJUKTI
HATBOI (Handbook of Agro-technology). Bangladesh Agricultural Research Institute, Gazipur
1701, Bangladesh. pp. 364 – 365.
Utama, D. N. and A. Wibowo. 2022. Virtual plant computational model of green-leaf vegetable plant bok
choy (Brassica chinensis L.) for investment decision. IOP Conf. Ser. Earth. Environ. Sci.
998012049.
Address:
Dr. Sitesh Chandra Biswas
Program Specialist (Retired)
BRAC Agricultural Research & Development Centre (BARDC)
Jogitola, BRRI, Joydebpur, Gazipur
BANGLADESH
Mobile Phone: +8801730349845
E-mail: sitesh.cb@brac.net
or, siteshchbiswas@yahoo.com
ORCID ID : Sitesh C. Biswas http://orcid.org/0000-0003-2179-8608
------------------------------------------------------------------------- X ---------------------------------------------------------

Más contenido relacionado

Was ist angesagt?

Vegetables and vegetable gardens
Vegetables and vegetable gardensVegetables and vegetable gardens
Vegetables and vegetable gardensAnshul Phaugat
 
AGRI 9_L1.pptx
AGRI 9_L1.pptxAGRI 9_L1.pptx
AGRI 9_L1.pptxErmaJalem
 
Ekonomiks DLL quarter 1 week 1 sy 18 19
Ekonomiks DLL quarter 1 week 1 sy 18 19Ekonomiks DLL quarter 1 week 1 sy 18 19
Ekonomiks DLL quarter 1 week 1 sy 18 19DIEGO Pomarca
 
epekto-ng-mga-Samahang-Kababaihan-at-ng-mga.pptx
epekto-ng-mga-Samahang-Kababaihan-at-ng-mga.pptxepekto-ng-mga-Samahang-Kababaihan-at-ng-mga.pptx
epekto-ng-mga-Samahang-Kababaihan-at-ng-mga.pptxjoyce506088
 
Lesson 1 Use of farm Tools and Equipment
Lesson 1  Use of farm Tools and EquipmentLesson 1  Use of farm Tools and Equipment
Lesson 1 Use of farm Tools and EquipmentRochelle Nato
 
Araling Panlipunan 9 - MELC Updated
Araling Panlipunan 9 - MELC UpdatedAraling Panlipunan 9 - MELC Updated
Araling Panlipunan 9 - MELC UpdatedChuckry Maunes
 
DAILY LESSON LOG ESP8 Q3 M9 DAY 1-2.docx
DAILY LESSON LOG ESP8 Q3 M9 DAY 1-2.docxDAILY LESSON LOG ESP8 Q3 M9 DAY 1-2.docx
DAILY LESSON LOG ESP8 Q3 M9 DAY 1-2.docxIvyPachica
 

Was ist angesagt? (11)

Vegetables and vegetable gardens
Vegetables and vegetable gardensVegetables and vegetable gardens
Vegetables and vegetable gardens
 
Crop plants
Crop plantsCrop plants
Crop plants
 
AGRI 9_L1.pptx
AGRI 9_L1.pptxAGRI 9_L1.pptx
AGRI 9_L1.pptx
 
Farm tools and equipment
Farm tools and equipmentFarm tools and equipment
Farm tools and equipment
 
Ekonomiks DLL quarter 1 week 1 sy 18 19
Ekonomiks DLL quarter 1 week 1 sy 18 19Ekonomiks DLL quarter 1 week 1 sy 18 19
Ekonomiks DLL quarter 1 week 1 sy 18 19
 
epekto-ng-mga-Samahang-Kababaihan-at-ng-mga.pptx
epekto-ng-mga-Samahang-Kababaihan-at-ng-mga.pptxepekto-ng-mga-Samahang-Kababaihan-at-ng-mga.pptx
epekto-ng-mga-Samahang-Kababaihan-at-ng-mga.pptx
 
roma-190808230527.pdf
roma-190808230527.pdfroma-190808230527.pdf
roma-190808230527.pdf
 
Lesson 1 Use of farm Tools and Equipment
Lesson 1  Use of farm Tools and EquipmentLesson 1  Use of farm Tools and Equipment
Lesson 1 Use of farm Tools and Equipment
 
Araling Panlipunan 9 - MELC Updated
Araling Panlipunan 9 - MELC UpdatedAraling Panlipunan 9 - MELC Updated
Araling Panlipunan 9 - MELC Updated
 
Ekonomiks (roleplay)
Ekonomiks (roleplay)Ekonomiks (roleplay)
Ekonomiks (roleplay)
 
DAILY LESSON LOG ESP8 Q3 M9 DAY 1-2.docx
DAILY LESSON LOG ESP8 Q3 M9 DAY 1-2.docxDAILY LESSON LOG ESP8 Q3 M9 DAY 1-2.docx
DAILY LESSON LOG ESP8 Q3 M9 DAY 1-2.docx
 

Ähnlich wie 'Sufola Batishak' A Good Quality Pechay Variety Developed by BRAC Through Conventional Breeding Method

Performance Evaluation of Cabbage (Brassica oleracea Capitata) Cultivars in M...
Performance Evaluation of Cabbage (Brassica oleracea Capitata) Cultivars in M...Performance Evaluation of Cabbage (Brassica oleracea Capitata) Cultivars in M...
Performance Evaluation of Cabbage (Brassica oleracea Capitata) Cultivars in M...AI Publications
 
Pruning, cropping pattern and spacing regulation to enhance growth, productio...
Pruning, cropping pattern and spacing regulation to enhance growth, productio...Pruning, cropping pattern and spacing regulation to enhance growth, productio...
Pruning, cropping pattern and spacing regulation to enhance growth, productio...Innspub Net
 
Banana plantlet production through tissueculture
Banana plantlet production through tissuecultureBanana plantlet production through tissueculture
Banana plantlet production through tissuecultureAbed Hawas
 
Generation and proliferation rate assessment of saba banana (Musa balbisiana)...
Generation and proliferation rate assessment of saba banana (Musa balbisiana)...Generation and proliferation rate assessment of saba banana (Musa balbisiana)...
Generation and proliferation rate assessment of saba banana (Musa balbisiana)...Innspub Net
 
Growth of Bush Pepper Seedlings of Different Sources of Cuttings Grown on Var...
Growth of Bush Pepper Seedlings of Different Sources of Cuttings Grown on Var...Growth of Bush Pepper Seedlings of Different Sources of Cuttings Grown on Var...
Growth of Bush Pepper Seedlings of Different Sources of Cuttings Grown on Var...AI Publications
 
Grain Quality of Doubled Haploid Lines in Rice (Oryza sativa L.) Produced by ...
Grain Quality of Doubled Haploid Lines in Rice (Oryza sativa L.) Produced by ...Grain Quality of Doubled Haploid Lines in Rice (Oryza sativa L.) Produced by ...
Grain Quality of Doubled Haploid Lines in Rice (Oryza sativa L.) Produced by ...Galal Anis, PhD
 
Effect of Seedling Density on Growth Attributes of Cauliflower variety Kathma...
Effect of Seedling Density on Growth Attributes of Cauliflower variety Kathma...Effect of Seedling Density on Growth Attributes of Cauliflower variety Kathma...
Effect of Seedling Density on Growth Attributes of Cauliflower variety Kathma...AI Publications
 

Ähnlich wie 'Sufola Batishak' A Good Quality Pechay Variety Developed by BRAC Through Conventional Breeding Method (20)

Development of a high yielding improved type spinach variety for commercial v...
Development of a high yielding improved type spinach variety for commercial v...Development of a high yielding improved type spinach variety for commercial v...
Development of a high yielding improved type spinach variety for commercial v...
 
‘Sufola palong-1’- a new high yielding spinach variety for vegetable growers
‘Sufola palong-1’- a new high yielding spinach variety for vegetable growers ‘Sufola palong-1’- a new high yielding spinach variety for vegetable growers
‘Sufola palong-1’- a new high yielding spinach variety for vegetable growers
 
Baromashi- a year round good quality pumpkin variety raises new hope to the p...
Baromashi- a year round good quality pumpkin variety raises new hope to the p...Baromashi- a year round good quality pumpkin variety raises new hope to the p...
Baromashi- a year round good quality pumpkin variety raises new hope to the p...
 
Development of a good quality spinach variety by BRAC
Development of a good quality spinach variety by BRAC Development of a good quality spinach variety by BRAC
Development of a good quality spinach variety by BRAC
 
Selection of a high yielding cow pea variety from local germplasms
Selection of a high yielding cow pea variety from local germplasmsSelection of a high yielding cow pea variety from local germplasms
Selection of a high yielding cow pea variety from local germplasms
 
Development of a pink coloured yardlong bean variety through conventional br...
Development of a pink coloured  yardlong bean variety through conventional br...Development of a pink coloured  yardlong bean variety through conventional br...
Development of a pink coloured yardlong bean variety through conventional br...
 
Cut-and-come-again practice on some leafy vegetables
Cut-and-come-again practice on some leafy vegetablesCut-and-come-again practice on some leafy vegetables
Cut-and-come-again practice on some leafy vegetables
 
Performance Evaluation of Cabbage (Brassica oleracea Capitata) Cultivars in M...
Performance Evaluation of Cabbage (Brassica oleracea Capitata) Cultivars in M...Performance Evaluation of Cabbage (Brassica oleracea Capitata) Cultivars in M...
Performance Evaluation of Cabbage (Brassica oleracea Capitata) Cultivars in M...
 
Pruning, cropping pattern and spacing regulation to enhance growth, productio...
Pruning, cropping pattern and spacing regulation to enhance growth, productio...Pruning, cropping pattern and spacing regulation to enhance growth, productio...
Pruning, cropping pattern and spacing regulation to enhance growth, productio...
 
Development of a good quality ash gourd F1 hybrid through conventional breedi...
Development of a good quality ash gourd F1 hybrid through conventional breedi...Development of a good quality ash gourd F1 hybrid through conventional breedi...
Development of a good quality ash gourd F1 hybrid through conventional breedi...
 
Banana plantlet production through tissueculture
Banana plantlet production through tissuecultureBanana plantlet production through tissueculture
Banana plantlet production through tissueculture
 
Development of an improved kangkong variety and assessment of its profitabil...
 Development of an improved kangkong variety and assessment of its profitabil... Development of an improved kangkong variety and assessment of its profitabil...
Development of an improved kangkong variety and assessment of its profitabil...
 
Generation and proliferation rate assessment of saba banana (Musa balbisiana)...
Generation and proliferation rate assessment of saba banana (Musa balbisiana)...Generation and proliferation rate assessment of saba banana (Musa balbisiana)...
Generation and proliferation rate assessment of saba banana (Musa balbisiana)...
 
Development of an early maturing yellow seeded mung bean variety from local g...
Development of an early maturing yellow seeded mung bean variety from local g...Development of an early maturing yellow seeded mung bean variety from local g...
Development of an early maturing yellow seeded mung bean variety from local g...
 
Growth of Bush Pepper Seedlings of Different Sources of Cuttings Grown on Var...
Growth of Bush Pepper Seedlings of Different Sources of Cuttings Grown on Var...Growth of Bush Pepper Seedlings of Different Sources of Cuttings Grown on Var...
Growth of Bush Pepper Seedlings of Different Sources of Cuttings Grown on Var...
 
Summer country bean cultivation raises farm income in Bangladesh
Summer country bean cultivation raises farm income in BangladeshSummer country bean cultivation raises farm income in Bangladesh
Summer country bean cultivation raises farm income in Bangladesh
 
Grain Quality of Doubled Haploid Lines in Rice (Oryza sativa L.) Produced by ...
Grain Quality of Doubled Haploid Lines in Rice (Oryza sativa L.) Produced by ...Grain Quality of Doubled Haploid Lines in Rice (Oryza sativa L.) Produced by ...
Grain Quality of Doubled Haploid Lines in Rice (Oryza sativa L.) Produced by ...
 
Colourful Vegetables and Their Importance in Commercial Vegetable Cultivation
Colourful Vegetables and Their Importance in Commercial Vegetable CultivationColourful Vegetables and Their Importance in Commercial Vegetable Cultivation
Colourful Vegetables and Their Importance in Commercial Vegetable Cultivation
 
Effect of Seedling Density on Growth Attributes of Cauliflower variety Kathma...
Effect of Seedling Density on Growth Attributes of Cauliflower variety Kathma...Effect of Seedling Density on Growth Attributes of Cauliflower variety Kathma...
Effect of Seedling Density on Growth Attributes of Cauliflower variety Kathma...
 
Comparative Effect of Potting Media on Sprouting and Seedling Growth of Grape...
Comparative Effect of Potting Media on Sprouting and Seedling Growth of Grape...Comparative Effect of Potting Media on Sprouting and Seedling Growth of Grape...
Comparative Effect of Potting Media on Sprouting and Seedling Growth of Grape...
 

Mehr von BRAC AGRICULTURE RESEARCH & DEVELOPMENT CENTRE, GAZIPUR, BANGLADFESH

Mehr von BRAC AGRICULTURE RESEARCH & DEVELOPMENT CENTRE, GAZIPUR, BANGLADFESH (19)

‘Improved Taherpuri’- a New Improved Onion Variety Developed Through Selection
‘Improved Taherpuri’- a New Improved Onion Variety Developed Through Selection‘Improved Taherpuri’- a New Improved Onion Variety Developed Through Selection
‘Improved Taherpuri’- a New Improved Onion Variety Developed Through Selection
 
Excellent Outcome in Vegetable Breeding Activities through the Joint Collab...
Excellent Outcome  in  Vegetable Breeding Activities through the Joint Collab...Excellent Outcome  in  Vegetable Breeding Activities through the Joint Collab...
Excellent Outcome in Vegetable Breeding Activities through the Joint Collab...
 
'Binny dhaner khoi' made from 'Binny Dhan' grown in Natore district
'Binny dhaner khoi' made from 'Binny Dhan' grown in Natore district  'Binny dhaner khoi' made from 'Binny Dhan' grown in Natore district
'Binny dhaner khoi' made from 'Binny Dhan' grown in Natore district
 
Remembering BRAC Founder Sir Fazle Hasan Abed (KCMG)
Remembering BRAC Founder Sir Fazle Hasan Abed (KCMG)Remembering BRAC Founder Sir Fazle Hasan Abed (KCMG)
Remembering BRAC Founder Sir Fazle Hasan Abed (KCMG)
 
Evaluation & Demonstration Trial Activities Through Product Development Supp...
Evaluation & Demonstration Trial Activities Through  Product Development Supp...Evaluation & Demonstration Trial Activities Through  Product Development Supp...
Evaluation & Demonstration Trial Activities Through Product Development Supp...
 
Watermelon Research in BRAC
Watermelon Research in BRACWatermelon Research in BRAC
Watermelon Research in BRAC
 
Field Evaluation of Five BARI Potato Varieties
Field Evaluation of Five BARI  Potato VarietiesField Evaluation of Five BARI  Potato Varieties
Field Evaluation of Five BARI Potato Varieties
 
Demonstration Trial of Heat Tolerant and White Maize in Bangladesh
Demonstration Trial  of Heat Tolerant and White Maize in BangladeshDemonstration Trial  of Heat Tolerant and White Maize in Bangladesh
Demonstration Trial of Heat Tolerant and White Maize in Bangladesh
 
Production Technology of Watermelon in the Summer Season (Bengali Version)
Production Technology  of Watermelon in the Summer Season (Bengali Version)Production Technology  of Watermelon in the Summer Season (Bengali Version)
Production Technology of Watermelon in the Summer Season (Bengali Version)
 
Performance trial of two exotic Amon season hybrid rice varieties in Banglade...
Performance trial of two exotic Amon season hybrid rice varieties in Banglade...Performance trial of two exotic Amon season hybrid rice varieties in Banglade...
Performance trial of two exotic Amon season hybrid rice varieties in Banglade...
 
Growing coloured vegetables- a new trend of vegetable cultivation in Bangladesh.
Growing coloured vegetables- a new trend of vegetable cultivation in Bangladesh.Growing coloured vegetables- a new trend of vegetable cultivation in Bangladesh.
Growing coloured vegetables- a new trend of vegetable cultivation in Bangladesh.
 
A Journey to 'Golachipa'- the Heaven of Watermelons
A Journey to 'Golachipa'-  the Heaven of Watermelons A Journey to 'Golachipa'-  the Heaven of Watermelons
A Journey to 'Golachipa'- the Heaven of Watermelons
 
Product Development Support (PDS) Section of BRAC Seed & Agro Enterprise and ...
Product Development Support (PDS) Section of BRAC Seed & Agro Enterprise and ...Product Development Support (PDS) Section of BRAC Seed & Agro Enterprise and ...
Product Development Support (PDS) Section of BRAC Seed & Agro Enterprise and ...
 
'Radish' - a versatile vegetable crop improves the rural economy of Banglades...
'Radish' - a versatile vegetable crop improves the rural economy of Banglades...'Radish' - a versatile vegetable crop improves the rural economy of Banglades...
'Radish' - a versatile vegetable crop improves the rural economy of Banglades...
 
Research Activities on Yardlong bean in BRAC, Bangladesh
Research Activities on Yardlong bean in BRAC, BangladeshResearch Activities on Yardlong bean in BRAC, Bangladesh
Research Activities on Yardlong bean in BRAC, Bangladesh
 
'Baromashi' - an excellent pumpkin variety developed by BRAC, Bangladesh
'Baromashi' - an excellent pumpkin variety developed by BRAC, Bangladesh'Baromashi' - an excellent pumpkin variety developed by BRAC, Bangladesh
'Baromashi' - an excellent pumpkin variety developed by BRAC, Bangladesh
 
BRAC pulses progrmme & its activities
BRAC pulses progrmme & its activitiesBRAC pulses progrmme & its activities
BRAC pulses progrmme & its activities
 
Development of promising hybrids for tomato production in Bangladesh
Development of promising hybrids for tomato production in BangladeshDevelopment of promising hybrids for tomato production in Bangladesh
Development of promising hybrids for tomato production in Bangladesh
 
Importance of women entrepreneurship in small scale seed production for home ...
Importance of women entrepreneurship in small scale seed production for home ...Importance of women entrepreneurship in small scale seed production for home ...
Importance of women entrepreneurship in small scale seed production for home ...
 

Último

Flow Control | Block Size | ST Min | First Frame
Flow Control | Block Size | ST Min | First FrameFlow Control | Block Size | ST Min | First Frame
Flow Control | Block Size | ST Min | First FrameKapil Thakar
 
Outage Analysis: March 5th/6th 2024 Meta, Comcast, and LinkedIn
Outage Analysis: March 5th/6th 2024 Meta, Comcast, and LinkedInOutage Analysis: March 5th/6th 2024 Meta, Comcast, and LinkedIn
Outage Analysis: March 5th/6th 2024 Meta, Comcast, and LinkedInThousandEyes
 
March Patch Tuesday
March Patch TuesdayMarch Patch Tuesday
March Patch TuesdayIvanti
 
UiPath Studio Web workshop series - Day 1
UiPath Studio Web workshop series  - Day 1UiPath Studio Web workshop series  - Day 1
UiPath Studio Web workshop series - Day 1DianaGray10
 
Keep Your Finger on the Pulse of Your Building's Performance with IES Live
Keep Your Finger on the Pulse of Your Building's Performance with IES LiveKeep Your Finger on the Pulse of Your Building's Performance with IES Live
Keep Your Finger on the Pulse of Your Building's Performance with IES LiveIES VE
 
Emil Eifrem at GraphSummit Copenhagen 2024 - The Art of the Possible.pptx
Emil Eifrem at GraphSummit Copenhagen 2024 - The Art of the Possible.pptxEmil Eifrem at GraphSummit Copenhagen 2024 - The Art of the Possible.pptx
Emil Eifrem at GraphSummit Copenhagen 2024 - The Art of the Possible.pptxNeo4j
 
Webinar: The Art of Prioritizing Your Product Roadmap by AWS Sr PM - Tech
Webinar: The Art of Prioritizing Your Product Roadmap by AWS Sr PM - TechWebinar: The Art of Prioritizing Your Product Roadmap by AWS Sr PM - Tech
Webinar: The Art of Prioritizing Your Product Roadmap by AWS Sr PM - TechProduct School
 
Scenario Library et REX Discover industry- and role- based scenarios
Scenario Library et REX Discover industry- and role- based scenariosScenario Library et REX Discover industry- and role- based scenarios
Scenario Library et REX Discover industry- and role- based scenariosErol GIRAUDY
 
TrustArc Webinar - How to Live in a Post Third-Party Cookie World
TrustArc Webinar - How to Live in a Post Third-Party Cookie WorldTrustArc Webinar - How to Live in a Post Third-Party Cookie World
TrustArc Webinar - How to Live in a Post Third-Party Cookie WorldTrustArc
 
UiPath Studio Web workshop Series - Day 3
UiPath Studio Web workshop Series - Day 3UiPath Studio Web workshop Series - Day 3
UiPath Studio Web workshop Series - Day 3DianaGray10
 
AI Workshops at Computers In Libraries 2024
AI Workshops at Computers In Libraries 2024AI Workshops at Computers In Libraries 2024
AI Workshops at Computers In Libraries 2024Brian Pichman
 
UiPath Studio Web workshop series - Day 4
UiPath Studio Web workshop series - Day 4UiPath Studio Web workshop series - Day 4
UiPath Studio Web workshop series - Day 4DianaGray10
 
Top 10 Squarespace Development Companies
Top 10 Squarespace Development CompaniesTop 10 Squarespace Development Companies
Top 10 Squarespace Development CompaniesTopCSSGallery
 
Oracle Database 23c Security New Features.pptx
Oracle Database 23c Security New Features.pptxOracle Database 23c Security New Features.pptx
Oracle Database 23c Security New Features.pptxSatishbabu Gunukula
 
.NET 8 ChatBot with Azure OpenAI Services.pptx
.NET 8 ChatBot with Azure OpenAI Services.pptx.NET 8 ChatBot with Azure OpenAI Services.pptx
.NET 8 ChatBot with Azure OpenAI Services.pptxHansamali Gamage
 
Trailblazer Community - Flows Workshop (Session 2)
Trailblazer Community - Flows Workshop (Session 2)Trailblazer Community - Flows Workshop (Session 2)
Trailblazer Community - Flows Workshop (Session 2)Muhammad Tiham Siddiqui
 
Novo Nordisk's journey in developing an open-source application on Neo4j
Novo Nordisk's journey in developing an open-source application on Neo4jNovo Nordisk's journey in developing an open-source application on Neo4j
Novo Nordisk's journey in developing an open-source application on Neo4jNeo4j
 
Key Trends Shaping the Future of Infrastructure.pdf
Key Trends Shaping the Future of Infrastructure.pdfKey Trends Shaping the Future of Infrastructure.pdf
Key Trends Shaping the Future of Infrastructure.pdfCheryl Hung
 
SIM INFORMATION SYSTEM: REVOLUTIONIZING DATA MANAGEMENT
SIM INFORMATION SYSTEM: REVOLUTIONIZING DATA MANAGEMENTSIM INFORMATION SYSTEM: REVOLUTIONIZING DATA MANAGEMENT
SIM INFORMATION SYSTEM: REVOLUTIONIZING DATA MANAGEMENTxtailishbaloch
 

Último (20)

Flow Control | Block Size | ST Min | First Frame
Flow Control | Block Size | ST Min | First FrameFlow Control | Block Size | ST Min | First Frame
Flow Control | Block Size | ST Min | First Frame
 
Outage Analysis: March 5th/6th 2024 Meta, Comcast, and LinkedIn
Outage Analysis: March 5th/6th 2024 Meta, Comcast, and LinkedInOutage Analysis: March 5th/6th 2024 Meta, Comcast, and LinkedIn
Outage Analysis: March 5th/6th 2024 Meta, Comcast, and LinkedIn
 
March Patch Tuesday
March Patch TuesdayMarch Patch Tuesday
March Patch Tuesday
 
UiPath Studio Web workshop series - Day 1
UiPath Studio Web workshop series  - Day 1UiPath Studio Web workshop series  - Day 1
UiPath Studio Web workshop series - Day 1
 
SheDev 2024
SheDev 2024SheDev 2024
SheDev 2024
 
Keep Your Finger on the Pulse of Your Building's Performance with IES Live
Keep Your Finger on the Pulse of Your Building's Performance with IES LiveKeep Your Finger on the Pulse of Your Building's Performance with IES Live
Keep Your Finger on the Pulse of Your Building's Performance with IES Live
 
Emil Eifrem at GraphSummit Copenhagen 2024 - The Art of the Possible.pptx
Emil Eifrem at GraphSummit Copenhagen 2024 - The Art of the Possible.pptxEmil Eifrem at GraphSummit Copenhagen 2024 - The Art of the Possible.pptx
Emil Eifrem at GraphSummit Copenhagen 2024 - The Art of the Possible.pptx
 
Webinar: The Art of Prioritizing Your Product Roadmap by AWS Sr PM - Tech
Webinar: The Art of Prioritizing Your Product Roadmap by AWS Sr PM - TechWebinar: The Art of Prioritizing Your Product Roadmap by AWS Sr PM - Tech
Webinar: The Art of Prioritizing Your Product Roadmap by AWS Sr PM - Tech
 
Scenario Library et REX Discover industry- and role- based scenarios
Scenario Library et REX Discover industry- and role- based scenariosScenario Library et REX Discover industry- and role- based scenarios
Scenario Library et REX Discover industry- and role- based scenarios
 
TrustArc Webinar - How to Live in a Post Third-Party Cookie World
TrustArc Webinar - How to Live in a Post Third-Party Cookie WorldTrustArc Webinar - How to Live in a Post Third-Party Cookie World
TrustArc Webinar - How to Live in a Post Third-Party Cookie World
 
UiPath Studio Web workshop Series - Day 3
UiPath Studio Web workshop Series - Day 3UiPath Studio Web workshop Series - Day 3
UiPath Studio Web workshop Series - Day 3
 
AI Workshops at Computers In Libraries 2024
AI Workshops at Computers In Libraries 2024AI Workshops at Computers In Libraries 2024
AI Workshops at Computers In Libraries 2024
 
UiPath Studio Web workshop series - Day 4
UiPath Studio Web workshop series - Day 4UiPath Studio Web workshop series - Day 4
UiPath Studio Web workshop series - Day 4
 
Top 10 Squarespace Development Companies
Top 10 Squarespace Development CompaniesTop 10 Squarespace Development Companies
Top 10 Squarespace Development Companies
 
Oracle Database 23c Security New Features.pptx
Oracle Database 23c Security New Features.pptxOracle Database 23c Security New Features.pptx
Oracle Database 23c Security New Features.pptx
 
.NET 8 ChatBot with Azure OpenAI Services.pptx
.NET 8 ChatBot with Azure OpenAI Services.pptx.NET 8 ChatBot with Azure OpenAI Services.pptx
.NET 8 ChatBot with Azure OpenAI Services.pptx
 
Trailblazer Community - Flows Workshop (Session 2)
Trailblazer Community - Flows Workshop (Session 2)Trailblazer Community - Flows Workshop (Session 2)
Trailblazer Community - Flows Workshop (Session 2)
 
Novo Nordisk's journey in developing an open-source application on Neo4j
Novo Nordisk's journey in developing an open-source application on Neo4jNovo Nordisk's journey in developing an open-source application on Neo4j
Novo Nordisk's journey in developing an open-source application on Neo4j
 
Key Trends Shaping the Future of Infrastructure.pdf
Key Trends Shaping the Future of Infrastructure.pdfKey Trends Shaping the Future of Infrastructure.pdf
Key Trends Shaping the Future of Infrastructure.pdf
 
SIM INFORMATION SYSTEM: REVOLUTIONIZING DATA MANAGEMENT
SIM INFORMATION SYSTEM: REVOLUTIONIZING DATA MANAGEMENTSIM INFORMATION SYSTEM: REVOLUTIONIZING DATA MANAGEMENT
SIM INFORMATION SYSTEM: REVOLUTIONIZING DATA MANAGEMENT
 

'Sufola Batishak' A Good Quality Pechay Variety Developed by BRAC Through Conventional Breeding Method

  • 1. 1 ‘Sufola Batishak’ A Good Quality Pechay Variety Developed by BRAC for the Vegetable Growers Sitesh C. Biswas* BRAC Agricultural Research & Development Centre, BRRI, Joydebpur, Gazipur, Bangladesh *Corresponding author: sitesh.cb@brac.net Abstract A good quality pechay (Batishak) has been developed at BRAC Agricultural Research and Development Centre (BARDC) to meet the increasing demand of fast growing leafy vegetables in the vegetable market of Bangladesh performing conventional breeding method introduction followed by reselection method. Compared to check varieties this newly developed pechay variety (commercial name Sufola Batishak) gave higher yield, exhibited late in flowering and it was found to be tolerant to major diseases & pests as well. This new pechay variety is also a year round variety and besides its open field cultivation it gave a very good yield when cultivated under polythene tunnel in the rainy season during the crisis period of vegetables. At BARDC, satisfactory production of the new pechay variety was also noticed following cut-and-come-again method. Due to the better performance of newly developed pechay line at the farmer’s level it was released by the BRAC Seed Enterprise Division giving the commercial name as ‘Sufola Batishak’. Its fresh vegetable production has been recorded as 25-30 Mt/ha. Since at the growers level a very good seed production performance of this ‘Sufola Batishak’ was found in Bangladeshi agro-climatic condition this pechay variety was found to be a profitable vegetable for seed business and sustainable batishak cultivation as well in this country. Key words: Brassica rapa L. Introduction, Leafy vegetable, Nutritious vegetable, Pechay, Selection, Sufola batishak Pechay or Bok choy or Bati shak (Brassica rapa) belongs to the family Cruciferae or Brassicaceae (Gonzales et al. 2015) is a quick growing short aged popular leafy vegetable of China, Philippines, Eastern Asia and South East Asian countries and this very profitable nutritious vegetable requires cool and moist environment for its better growth and development. Its leaves are consumed as raw or in cooked form (Aglosolos et al. 2021) although consumption of raw leaves are recommended since nutritional value is diminished by cooking (Prado 2014) and its petioles also considered as a preferable part for preparing delicious dishes. In the Philippines, pechay is believed to be an oldest green vegetables and this particular leafy vegetable plays a vital role in its economy and the nutrition of its people (Gonzales et al. 2015). In Bangladesh it is relatively a new vegetable and so far only one variety of pechay has been released by Bangladesh Agricultural Research Institute (Razzaque et al. 2000). Although pechay can be grown in this country almost throughout the year but its seed production is restricted only in the winter season (Razzaque et al. 2000). Owing to its excellent flavor, good taste, relatively higher production of fresh vegetables within a very short period and has good health benefits due to the presence of calcium, iron, carotene, phosphorus, vitamin C, fiber, antioxidants etc. (Utama and Wibowo 2022, Baek et al. 2021) gradually it is becoming a profitable vegetable for the Bangladeshi commercial vegetable growers. Besides its cultivation as a field crop; it can be grown as a suitable vegetable for the roof garden and balcony gardens as well. Pechay can also be grown hydroponically (Baek et al. 2021, Briggs et al. 2019, Nair and Irish 2016). Considering the importance of pechay as an important leafy vegetable and to develop a new BRAC pechay variety, a Filipino accession of pechay germplasm (Pechay 01) was introduced at BARDC (BRAC Agricultural Research and Development Centre) during the year 2007. After a series of cultivation and reselection from the Filipino accession a new advance line of pechay was developed. Seeds of pechay received from ATI (Agriculture Training Institute), Manila, Philippines were sown on 10.11.2008 in seed bed for its successful germination and emergence of seedlings. Fifteen days old healthy seedlings were transplanted on 26.11.2008 in the main plot consisting 0.94 decimal of land maintaining the distance line to line as 30 cm. and plant to plant as 15cm. Standard pechay cultivation
  • 2. 2 practices were followed to ensure better plant growth and development. At 21 days after transplanting (DAT) data were recorded from randomly selected ten plants as in Bangladeshi consumers usually prefer to consume pechay at this stage and the data have been presented in Table.1. First generation data reveals the fact that the performance showed by the Filipino pechay is relatively satisfactory. Observing good plant growth and development rest of the plants were allowed to grow for seed production. Normal flowering and excellent fruit setting was observed in the pechay plants in Bangladeshi agro climatic condition. Seeds from healthy plants were harvested and stored carefully at the end of the season. Healthy seeds obtained from the Filipino stock (Pechay 01) were sown in the next year for growing second generation of pechay and again selection process was operated for its further improvement. Following the same procedure up to the 6th generation a relatively homogenous group of pechay plants was obtained which constituted the advance pechay line (BRAC Pechay) (Figs.1 & 2). A comparative analysis of data between the 1st generation and 6th generation has been presented in the Table. 1. Table. 1. Comparison between 1st and 6th generation morphological data of BARDC developed pechay (Bati shak) (at 21 DAS). 1st generation Plant height/plant (cm) Plant spreading/plant (cm) No. of leaves/ plant Length of 3 fully expanded leaves (cm) Width of 3 fully expanded leaves (cm) Plant wt./ plant (g) Mean 23.14 35.90 11.97 28.45 15.61 204.34 Range 21.00 -32.86 31.9 -39.26 10.04 -15.52 27.09 - 30.43 14.30 -17.04 142.43 -250.17 S.D ±2.26 ±2.48 ±2.48 ±1.29 ±1.22 ±34.85 6th generation Plant height /plant (cm) Plant spreading/plant (cm) No. of leaves/ plant Length of 3 fully expanded leaves (cm) Width of 3 fully expanded leaves (cm) Plant wt./plant (g) Mean 30.27 33.50 10.63 28.95 16.85 236.47 Range 28.00 -33.00 29.00 - 37.00 10.00 - 11.00 25.67 - 31.33 15.00 - 18.67 156.90 - 320.10 S.D ±1.43 ±1.91 ±0.51 ±1.29 ±0.91 ±47.49 Compared to 1st generation in the 6th generation plant height and plant wt. per plant were found to be increased considerably (30.81% and 15.72% respectively) while plant spreading was found to be decreased (7.16%) which may due to the operation of selection process towards the more compact and heavier large plants in each and every generation. Table.1 also reveals the fact that uniformity rate among the plants of the 6th generation population has been increased compared to the 1st generation plants. The main features of the new BRAC pechay line are: 1. Quick growing short duration leafy vegetable having delicious taste. 2. Plants have a nice vigour, stems are fleshy, white and broad deep green leaves are thicker with crispy texture and white petioles. 3. Very easy to cultivate and free from the attack of major diseases and pests.
  • 3. 3 4. Production per unit area is appreciably high compared to traditional leafy vegetables viz., red amaranth, radish, spinach and the vegetable form of oil seeded Brassica (Sorisha shak). 5. It can be utilized in the international standard hotels and restaurants and also as an exportable vegetable commodity for the super markets as well. 6. Plants having 14-15 leaves with the leaf size- 30 cm X 17 cm and vegetable harvesting can be started from 21-22 days after transplanting. 7. Production of fresh vegetable is around 25- 30 Mt/ha. 8. Seed production of the new pechay line is also profitable as on an average 20g -25g of seeds can be produced from a single plant. 9. This good quality pechay line can also be grown as a suitable vegetable for roof top and balcony gardening. 10. Multiple harvesting of vegetables is possible from this pechay line following cut-and-come- again practice. 11. Late bolting pechay line which ensures higher production and good quality. After the development of the new advance pechay line (BRAC Pechay) this promising line was tested in the preliminary yield trial for its suitability as a commercial variety. For this purpose, seeds of the advance pechay line were sown in experimental plot along with the check varieties on 05.10.2014 in 3 replications. Results of the preliminary yield trial has been presented in Table. 2. Fig. 1. Newly developed pechay line in the experimental Fig. 2. A single plant of BARDC developed plot of BARDC. advance line of pechay. Preliminary yield trial showed the superiority of BRAC pechay line over the other two check varieties in all the characters (Figs. 3, 5 & 9). It was also identified as an early variety and gave higher yield too (Table. 2). Data showed that the BRAC pechay line had 10.45% higher plant wt. than the pak choy of Momin seed and 9.20% than Bati shak of Rajdhani seed. Similarly, the newly developed line recorded 8.42% increased yield than pak choy of Momin seed and 4.30% higher yield Bati shak of Rajdhani seed. Critical observation also revealed the fact that BRAC developed line is a late bolting variety as well (Fig.
  • 4. 4 4 & 9) and it produced on an average 20-25g of seeds per each plant. Haunold (1981) also opined that along with introduction, reselection is a less expensive breeding technique through which a variety can be improved in a relatively shorter time. It can be mentioned here that this advance pechay line also exhibited nice performance when they were grown under polythene tunnel during the rainy season (Biswas 2012). In Bangladesh, during the monsoon period only few vegetables can be grown due to severe waterlogging condition resulted due to heavy rainfall but if the pechay can be grown under polythene tunnel the crop usually give a very satisfactory performance and the farmer can earn a very good profit. Table. 2. Mean values of morphological characters of BARDC developed pechay and check varieties (PYT). Variety Source Plant height/ plant (cm) Plant spreading/ plant (cm) No. of leaves/ plant Length of 3 fully expanded leaves (cm) Width of 3 fully expanded leaves (cm) Plant wt./ plant (g) % of increased plant wt. in BRAC Pechay than check varieties Yield (Mt/ha) % of increased yield in BRAC Pechay than check varieties BRAC Pechay BRAC 29.20±1.01 36.59±2.68 9.52±0.63 25.57±2.62 15.57±0.91 83.97±3.08 - 4.12±4.32 - Pak choy Momin seed 29.02±0.87 33.02±2.49 8.52±0.27 25.50±2.22 13.65±0.28 76.02±2.30 10.45 3.80±3.41 8.42 Bati shak Rajdhani seed 26.59±2.20 31.20±1.46 7.82±0.42 23.75±1.04 12.47±1.02 76.89±7.50 9.20 3.95±5.34 4.30 Fig. 3. Comparison between BRAC pechay (BARDC) & Fig. 4. Late bolting nature of BRAC pechay check varieties. (BARDC) variety.
  • 5. 5 Fig. 5. Preliminary yield trial plot (PYT) of BARDC developed pechay line along with the check varieties. Newly developed pechay line was also tested for Cut-and-come-again practice (Table. 3, Figs. 6, 7 & 8). Fresh pechay seeds collected from the new line were sown on 4.40 m X 1m bed for this purpose. Excellent seed germination was noticed and since the growth of the pechay plants were relatively faster, within a few days the plants attained a height of 20-21 cm and became suitable for 1st harvesting of leaves at 30 DAS (Days After Sowing). Young pechay plants with tender leaves were cut at 2-3 inches up from the soil surface and a total of 3 kg of leaves were collected at 1st harvesting. After 1st harvesting, the excised plants were provided with normal fertilization and irrigation practices. In response to the proper cultural practices, each of the cut plants started to produce new leaves and the emerged shoots were again found to be suitable for 2nd harvesting after 14 days i.e. at 44 DAS. However, to gather more information regarding seed production from the cut plants, the plants were kept intact for seed production. Flowering in the cut plants was found to be delayed by 4-5 days than normal plants but excellent flowering as well as fruit setting were observed in the regenerated shoots of the excised plants. Interestingly, good quality pechay seeds were also obtained from these cut plants at the end of the season. Liu and Liu (2023) also recommended the practice of multiple harvesting of pechay when it is grown at the homestead level. In a separate experiment, Biswas (2012b) reported a very amazing result in spinach applying Cut-and-come-again practice. Fig. 6. Pechay ready for Fig. 7. Multiple harvesting Fig. 8. Normal (L) & sprouted pechay plant leaf harvesting. practice in pechay. (R).
  • 6. 6 Table 3. Comparative study of morphological characters of the normal and cut plants at 45 DAS). Status of the plant Plant height (cm) Plant spreading (cm) No. of leaves/ plant Length of leaves (cm) Width of leaves (cm) Days taken to 1st flowering Cut plants 31.83 (30.00 - 34.00) 28.17 (25.00 - 30.00) 7.33 (6.00 - 8.00) 30.06 (27.67- 32.33) 13.08 (11.33 -16.17) 47.00 (47.00 - 50.00) Control 25.67 (25.00 – 26.00) 26.33 (26.00 - 27.00) 12.00 (10.00 -14.00) 24.67 (24.00 - 25.67) 11.34 (9.67-12.67) 42.00 (42.00 - 45.00) Fig. 9. Better performance of Sufola Batishak (Left) in the Fig. 10. Sticker used on seed experimental Plot of BARDC. packet. After successful Advance Yield Trial (AYT) and Multilocational Yield Trial (MLT) this BRAC pechay advance line was released as a commercial variety giving the name ‘Sufola Batishak’ and BRAC produced 300 kg seed for marketing during the year 2017-18 (Fig. 10). References Aglosolos, M. P., M. J. L. Regencia and F. E. Arcilla Jr. 2021. Effects of vermicomposts produced from cow dung, saw dust and shredded paper on the growth rate and yield of Chinese pechay (Brassica rapa). IAMURE International journal of Ecology and Conservation. 34 (1): 36-49. Baek, M.W., H. R. Choi, T. Solomon, C. S. Jeong, H. O. Lee and S. Tilahun. 2021. Pre harvest Methyl Jasmonate Treatment Increased the Antioxidant Activity and Glucosinolate Contents of Hydroponically Grown Pak choi. Antioxidants. 2021,10, 131. https:// doi.org/10.3390/antiox 10010131. Biswas, S. C. 2012a. ‘Cut-and-come-again’ method for harvesting spinach in Bangladesh. FEEDBACk from the field. AVRDC- The World Vegetable Centre. Global Technology Dissemination. P.O. Box 42, Shanhua, Tainan 74199, Tiwan. March Issue. p. 3.
  • 7. 7 Biswas, S. C. 2012b. Vegetable cultivation in the monsoon season in Bangladesh. FEEDBACK from the field. AVRDC- The World Vegetable Centre. Global Technology Dissemination. P.O. Box 42, Shanhua, Tainan 74199, Tiwan. September Issue. pp. 5-6. Briggs, H. R., A. M. Tallontire and A. J. Dougil. 2019. Exploring the Contribution of Vertical Farming to Sustainable Intensification from the Point of View of the Innovator and the Farmer. Sustainability Research Institute, Leeds, U.K. pp.1- 44. Gonzales, L. M. R., R. A. Caralde and M. L. Abun. 2015. Response of pechay (Brassica napus L.) to different levels of compost fertilizer. International Journal of Scientific and Research Publications. 5 (2): 1-4. Haunold. A. 1981. Hop production, breeding and variety development in various countries. The American Society of Brewing Chemists. Inc. 39 (1): pp. 27-34. Liu. H and G. Liu. 2023. Bok choy, An Asian Green Leafy Green Vegetable Emerging in Florida. [Online]. Available at: https://www.researchgate.net/publication/342455544_Bok_Choy_an_Asian_Leafy _Green_Vegetable_Emerging_in_Florida. Nair, A. and L. Irish. 2016. Commercial Production of Pak choi. Iowa State University Extension & Outreach: Ames, Iowa. pp. 1-4. Prado, A. J. 2014. Effect of organic fertilizer on growth performance of Brassica rapa under La Union, Philippines. E-International Scientific Research Journal. 5 (4): 1-6. Razzaque, M.A., M. A. Sattar, M. S. Amin, M. A. Kayum and M. S. Alam. 2000. KRISHI PROJUKTI HATBOI (Handbook of Agro-technology). Bangladesh Agricultural Research Institute, Gazipur 1701, Bangladesh. pp. 364 – 365. Utama, D. N. and A. Wibowo. 2022. Virtual plant computational model of green-leaf vegetable plant bok choy (Brassica chinensis L.) for investment decision. IOP Conf. Ser. Earth. Environ. Sci. 998012049. Address: Dr. Sitesh Chandra Biswas Program Specialist (Retired) BRAC Agricultural Research & Development Centre (BARDC) Jogitola, BRRI, Joydebpur, Gazipur BANGLADESH Mobile Phone: +8801730349845 E-mail: sitesh.cb@brac.net or, siteshchbiswas@yahoo.com ORCID ID : Sitesh C. Biswas http://orcid.org/0000-0003-2179-8608 ------------------------------------------------------------------------- X ---------------------------------------------------------