陇南小麦条锈病控制中抗病基因的布局

Gene Distribution of Control of Stripe-rust on Wheat in Longnan Region

【研究目的】陇南地区为中国小麦条锈病核心疫源区,为了从源头治理,前人提出以抗病基因布局为核心内容的小麦条锈病控制的框架思路,但在实践中尚缺乏具体技术措施。【研究方法】通过对上世纪60年代以来陇南小麦品种的布局特点、抗源利用情况及陇南30年主要育成品种产量性状的分析。【研究结果】提出在陇南地区基因布局的数量约为6个,布局方式以若干品种为主体,采取"替补法"更换感病退化品种,并进行品种储备使基因布局进入动态替补状态。【结论】该技术为基因布局的完善与实践提供技术参考。

Longnan is the nidus region of China＇s wheat-infecting stripe rust （Puccinia striiformis West.）.In order to achieve the goal of controlling of stripe rust in Longnan region, scientists have established the gene distribution technique for stripe rust control. But the effective methods on gene distribution have not been put forward particularly. Based on this problem, many researches have been conducted in Longnan area, which included the 40-year distributing character of wheat varieties, the situation of resistance resource used in practice and the yield trait of 42 varieties for 30 years. The result showed that the number of gene distribution is about 6 in Longnan region and that the varieties susceptible to stripe rust could be replaced with the resistant ones deriving from gene provision bank ,which is called ＂substitution method＂ in practice. This technique have great function on the implementation and improvement of gene distribution in Longnan area.