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作者	单位
姚强1，2，张贵1，2，贺苗苗1，2，王阳1，王保通1，井金学1	1. 西北农林科技大学植物保护学院, 陕西杨凌 712100； 2. 青海农林科学院，青海西宁 810016

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中文摘要:

为了解小偃9323抗条锈性的遗传规律，在常温（10~16℃）下，以小偃 9323和铭贤169 的杂交群体为研究对象，采用我国目前小麦条锈菌流行小种CYR30、CYR31、CYR32、SU11 4、SU11 11对供试群体进行苗期接种，分析杂交后代的抗病性及其分布情况。结果表明，小偃9323对CYR30、CYR31和SU11 4的抗病性均由两对隐性基因控制，对CYR32和SU11 11的抗病性由一对隐性基因控制。

英文摘要:

Xiaoyan 9323 is a wheat variety developed chromosome engineering, with good resistance to stripe rust. The inheritance of the stripe rust resistant gene in Xiaoyan 9323 is very important for revealing the resistant mechanism and development of durable resistant cultivars. The populations of Xiaoyan 9323 crossed with susceptible cultivar Mingxian 169 was used as materials, and was tested with prevalent stripe rust races CYR30, CYR31, CYR32, SU11 4 and SU11 11 under normal temperature（16±1）℃. The results confirmed that Xiaoyan 9323 had high resistance to all those races. The strip rust resistance in the F2 population of Xiaoyan 9323/Mingxian 169 to CYR30 , CYR31 and SU11 4 was controlled by two recessive genes, and to CYR32 and SU11 11 by one recessive gene. Genetic analysis on the F1 and BC1F1 populations confirmed this result. Results from this study would be helpful in locating the chromosomal position of the resistance genes and application of these genes in future wheat breeding program.

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