1. Agricultural Research and Extension Authority (AREA)
Strip Rust Current Situation at the Different Agro-
Ecological Zones in Yemen
Abdulla Sailan
Rashad Basha
Mohamed Amran

2. Agricultural Research &
Extension Authority
(AREA)
Agro – Ecological Regions of Yemen
Renewable Natural Resources
Research Center
(RNRRC)

3. Average Temperature in Yemen
Legend
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4. Climate
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Air Temperature in Dhamar city during 2013
Tmax (°C) Tmin (°C) Tmean (°C)
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oC
Dhamar: Air temperature
average 1999-2012
Tmax (°C) Tmin (°C) Tmean (°C)

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mm/month
Highlands: Monthly rainfall & evapotranspiration
average 1999 - 2012
Rainfall ETO 0.5 ETO
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The precipitation & evapotranspiration in The
Highlands during 2013
precipitation (mm/mth) ET0 (mm/month) 0.5 ET0 (mm/month)

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Highlands: Relative humidity
average 1999-2012
Relative humidity
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RH (%) in the Highlands
RH (%)

7. Area in Hectare and Production in Ton of
Wheat in Yemen, 2011
Yield
T/ha
Production/
T
Area/
Ha
Region
1.5147,44197,770Highlands
2.510247940218Plateau
1.1344320Coastal
1.7250,264138,308Total

8. Why do we think that Yemen is important to rust diseases?

9. Source: Dr. A. Yahyaoui Presentation

10. Sudan
Yeme
n
Iran
1998/9
2001
2003
2006
2007
Confirmed sites of Ug99 occurrence
Sr31 virulent (Ug99)
Yemen, 2009
2009Sr
?
Source: Dr. A. Yahyaoui Presentation

11. Annual wheat growing periods in Yemen
Ja. Fe. Ma. Ap. Ma. Ju. Jl. Au. Se. Oc. No. De. Ja.
Central and Northern Highlands
Southern Uplands Central and Northern Highlands
Plateau and Coastal

12. Severity of rust on wheat at different
locations in different seasons
Season
Location
SummerWinter
Leaf
Rust
Stem
Rust
Yellow
Rust
Leaf
Rust
Stem
Rust
Yellow
Rust
************Highlands
******Plateau
******Coastal

13. International Wheat Rust Trap Nurseries
Estimated number of Rust Trap Nurseries received from
ICARDA during 2008-2013
NumberName
64ISRTN
40Ug99ISRTN
56IYRTN
160Total

14. Most Important Results of the Trap Nurseries
In summer season of 2006 Yr1in shiness166 was susceptible with a score of
50S for the first time while in winter showed score of 0. Till the year of 2010
Yr1 was infected with strip rust and continue to be susceptible up to winter
2014 with a scoring varied between 5S to 50S in the Central Highlands region.
Yr32 in CarstensV gene showed yellow rust infection in the winter season
2014 in the Central Highlands. This is for the first time to be observed.
In 2007 yellow rust infection was observed on the following genes; Yr27 in
summer season, yr31 in summer season, YrAPR in summer season, YrND in
winter season, Yrsp splading prolific in winter season and Yr31 in winter
season in the Central Highlands.
In 2007, in Southern Uplands, Yr1 In Avocet, Yr10 in Avocet and Yrsp in Avocet
stil with Yr10 and Yrsp showed yellow rust infection. Also, in Southern
Uplands, Yr17 was infected with Yellow rust in 2010.

15. Trap Nurseries Results in Central Highlands
Resistant:
• Yr1 in Avoset, Yr2+, Yr4, Yr5, Yr10, Yr15 and YrDW
Susceptible:
• Yr2, Yr6, Yr, Yr8, Yr9, YrND, Yr32, Yrsp, YrA, Yr1 in Chiness166,
Yr18, Yr18+, Yr(A,18), Yr21, Yr25, Yr27, Yr27+, Yr(27+18), Yr28,
Yr29, Yr31, YrAPR

16. Trap Nurseries Results in Northern Highlands
Resistant:
• Yr1, Yr10, Yr4+, Yr7+, Yr6+,Yr15,YrCV, YrSP, Yr2+, Yr5, Yr31, Yr28,
Yr17, YrDW,3 and Yr3N
•
Susceptible:
• Yr7,Yr6, YrAPR, Yr18, Yr2, Yr27, Yr8,YrA, YrSP, Yr3V, YrSP,
Yr(9,27,18), Yr(27,18) and Yr9

17. Trap Nurseries Southern Uplands
Resistant
• Yr1, Yr2+, Yr4, Yr5, Yr10, Yr15, YrDW, YrND, Yr7+, Yr8, Yr32,
Yr3N, Yr3a,4a+other, Yr2more?
Susceptible:
• Yr1, Yr2, Yr3, Yr6, Yr Yr7, Yr9, Yr10, Yr17, YrCV, YrA, Yr18, Yr18+,
Yr(A,18), YrAPR, Yr21, Yr27, Yr(27,18), Yr28, Yr29, Yr31,
Yr(31,APR)

18. Surveillance

19. Dissemination of commercial wheat varieties and average rust scoring
carried out on 2010-2011
Disseminations %Reaction to Yellow RustWheat cultivarsRegions
17.6L (MS)Bohouth 13Central Highlands
17.6L (MR)Bohouth 15
--Bohouth 14
58.8M (S)Saba
5.9No yellow rustLocals
6.7L (MS)BonyNorthern Highlands
Bohouth 13
26.7M (MS)Saba
Shibam 8
66.6M (MR-MS)Locals
100L (MS)Bohouth 13Southern Highlands
33.4L (MR)KalyansonaSeiyun
29.6M (S)Local – Halba
25.9No yellow rustGhonimy
7.4No yellow rustHadramout-3
3.7M (S)AL-Ghashmor (Local)
10L (MS)SAMRAMarib
30No yellow rustBohoth32
10No yellow rustBohoth33
10No yellow rustBohoth34
20No yellow rustMASRY
10No yellow rustBONI
10No yellow rustMesani
No Yellow rust at this siteTihama

20. Dissemination of commercial wheat varieties with average
rust scoring carried out on 2011-2012
Disseminations
%
Reaction to
Yellow Rust
Wheat cultivarsRegions
12.5L (S)Bohouth 3Central
Highlands 18.75L (MS)Bohouth 13
6.25L (MS)Bohouth 14
--Bohouth 15
50M (S)Saba
6.25H (S)Sonalika
6.25L (MR)Locals (Arabi)
12.5L (R)Bohouth 13Northern
Highlands 25H (S)Bohouth 1
12.5L (S)Bohouth 15
25M(S)Saba
12.5L (S)Shibam -8
12.5L (R)Locals
100M (MS)Bohouth 13Southern
Highlands

21. Dissemination of commercial wheat varieties with average
rust scoring carried out on 2012-2013
Disseminations %Reaction to Yellow
Rust
Wheat cultivarsRegions
9.52M (MS)Bohouth 3Central Highlands
33.3M (MR)Bohouth 13
4.76L (S)Bohouth 14
4.76L (MS)Bohouth 15
33.3M (S)Saba
9.6M (S)Sonalika
4.76M (MS)Locals (Allas)
41.7M (MS)Al maniNorthern Highlands
8.3M (MS-MR)Gemiza
25M (MS)Saba
8.3L (MS)Baladi
16.7L (MS)Locals
50 +50H (S) + L (MS)Saba + Bohouth 13Southern Highlands
22.5RKalyansonaSeiyun
57.5L (MS)Local – Halba
7.5RGhonimy
12.5RHadramout-3

22. Acknowledgments:
Collaborative institutions with Yemen Wheat-Rust National
Program
ICARDA:
International Wheat Rust Trap Nurseries, All Types of trials seeds, Technical
Support and Training
SIMMYT:
Technical Support, Evaluation of breeding wheat lines and Training
FAO:
Surveillance and race analysis instruments, and supporting establishing of
Farmer Study Groups project for 2 years
BGRI:
Supporting wheat national program through one or more of the above
institutions