10. Amount and distribution of bean varieties Results – Farmers’ Knowledge Kabwohe Rubaya Nakaseke HH richness 2.21 2.20 2.556 HH Simpson 0.32 0.375 0.432 Community richness 23 26 16 Community Simpson 0.85 0.914 0.799 Divergence 0.62 0.59 0.46
11. Farmers’ Knowledge (Cont.) Dalixiang Baiyangnuo Magu Variation of resistance to rice blast in different traditional rice varieties 1-S 2-MS 3-MR 4-R
12. Results - Option 1 10 sample points were taken randomly in a field and these points’ for panicle blast different levels of resistance. Its range of variation was from 7% to 25%. Average disease incidence of 10 sample points for Dalixiang
14. Biotic diversity regulates pests and diseases Crop genetic diversity in farmer’s fields – reducing vulnerability Reducing the probability of crop loss from pest and diseases now and in the future Weighted Damage Index = Crop loss (household) Variety richness at household level Variety Evenness at household level Household Damage Index Higher variety richness/evenness – less variance in damage: a risk minimizing argument for crop variety diversity in the production system Peng et al., 2011
15. Results – Option 2 Of 63 varieties, 3 didn’t flower .HR, R and MR accounted for 5%, 1.67% and 15%, respectively. The remaining 78.33% ranged from MS to HS (56.67%). HR 3 Qiena, Zhangmeleng-1, Chujing-27 R 1 Modelong-1 MR 9 Chengnuo-88 , Nuoyou-9 , Baiyangnuo , Qiejiaba , Qiege , Chujing-24 , Bendipinzhong , Dulong-1 , Xiangnuo
16.
17. Results – Option 4 Disease grade of leaf blast Disease grade of panicle blast Resistance R MR MS S MS S HS No. 25 13 14 6 11 13 27 Precentage 43.10 22.41 24.14 10.34 21.57 25.49 52.94 No. of varieties 58 51 Seedling nursery Field identification nursery
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20. Results - option 5 Cultivars Isolates Frequency of virulent on cultivars 143-7a 08-SL-1-21 9-3 Y2009-31-1-6 S-2009-10-1-5 G2009-7-1-1 G2009-6-1-3 Hongyang-3 R R R R R S S 28.57 Yijing-1 R S S R R R R 28.57 magu S R R S R R R 28.57 Tuobeigu R R R S S R R 28.57 Changnuo-2 R R S R S R - 33.33 Hejing-7 R S S S R R R 42.86 Zaogu S R R S S R R 42.86 Xiangnuo R R R S R S S 42.86 Yinuo931 R S R S R S R 42.86 Chujing27 S R S S R R R 42.86 tuojiangnuo R S S R S R R 42.86 Chujing24 S R R S R S R 42.86 dulong-2 R S S S R R S 57.14 Chengnuo88 R S R S S S R 57.14 Yuelianggu S S R R S S R 57.14 Zimigu S R S S R S R 57.14 Nuoyou-9 S R S S S R R 57.14 zhangmeleng-2 R R S R S S S 57.14 zhangmeleng-3 R S S S R S R 57.14 Aijiaogu S R - S R S S 66.67 kaomolao S S S - R R S 66.67 Baiyangnuo R R S S S S S 71.43 Dianza31 S R R S S S S 71.43 Amoqie S S S S R R S 71.43 Hongjiaogu S S S S R R S 71.43
These four cultivars have the widest resistance spectra. Only Yijing-1 is the modern cultivars. The other three are traditional cultivars. These cultivars virulent frequency are 28.57%. And Their spectra are different. For most of other cultivars, the resistance spectra are also different.