大豆抗SCN_3种质资源的创新

Creation of New Soybean SCN_3-resistant Varieties

大豆孢囊线虫 (SCN)是危害大豆的主要病害之一 ,它发生范围广、危害比较严重 ,培育抗病品种是目前最经济有效的控制措施。培育抗病品种首先需要筛选和鉴定抗源 ,得到优良抗源材料至关重要。为此 ,针对目前我国大豆抗SCN3 种质资源存在的弱点问题进行创新研究。采用高抗大豆孢囊线虫病 3号生理小种的抗源与当地优良品种进行杂交 ,对后代 (F6)进行盆栽抗性筛选和田间丰产性能鉴定 ,从中鉴定出抗性强、综合农艺性状优良的创新种质资源 ,为今后抗线虫育种工作奠定基础 ,对加快育种进程、缩短育种年限具有重要作用。

Soybean cyst nematode (SCN) is one of the major soybean diseases. Its occurrence is large in scope and the harm is serious. So it is the most economic and efficient measure to develop disease resistant varieties at present. For developing disease resistant varieties, the first work is to select and appraise SCN resistant materials. The soybean SCN 3 resistant materials were crossed with the local varieties to select the resistant line and to appraise high yield properties from offsprings. The new materials with strong resistance and good synthetic agronomic characters have been selected. It will be the foundation for SCN resistant breeding and has an important role for speeding up the breeding course and shortening the number of years of breeding.