Abstract:
The resistance to stripe rust of forty-three cultivars widely-used in Henan province during the past sixty years was evaluated.Yr gene contained in these cultivars was identified by the molecular markers tightly linked with Yr1,Yr2,Yr5,Yr7,Yr9,Yr10,Yr24,Yr26,YrZH84 and YrSp.The result showed that the vast majority of varieties are lost in resistance for advantage of stripe rust races of CY32,CY33,Hy-8 and Su11-4 in Henan Province.Only three varieties have better resistance to the tested physiological races,which accounted for 7.0%.The gene of Yr1,Yr2,Yr5,Yr7,Yr9,Yr10,Yr24 and YrZH84 can be detected with frequencies of 14.0%,95.3%,11.6%,4.7%,16.3%,7.0 %,2.3%,11.6%,respectively.However,Yr26 and YrSp were absented in all the tested cultivars.Before 2000,stripe rust resistant genes were used with single gene Yr1,Yr2 mainly,with the resistant loss of a single gene,since 2000 the pyramids of muti-genes were used gradually in the Henan province.Yr10 and Yr24 had good effect to races CY32,Su11-4 and CY33,YrZH84 had only good effect to races CY32.While,the pyramids of gene Yr10 and YrZH84 had better resistance to all the tested physiological races.
Key words:
Wheat,
Stripe rust,
Resistance gene,
Molecular detection
CLC Number:
DONG Shu-jing, XU Wei-gang, HU Lin, DONG Hai-bin, ZHANG Jian-zhou, ZAN Xiang-cun, LI Zheng-ling. Molecular Detection of Stripe Rust Resistant Genes in 43 Wheat Varieties Planted in Henan Province[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2012, 27(5): 157-162. doi: 10.3969/j.issn.1000-7091.2012.05.030.