摘要
用小麦条锈菌生理小种条中31号,对小麦抗病种质贵农6号和鲁麦17的杂交后代进行抗条锈性遗传分析。结果表明:贵农6号携带1个抗条锈病显性单基因,暂命名为YrGn6。利用分组分析法(BSA),并根据F2抗、感病单株分离比例组建抗感池,从93个SSR引物组合中筛选到1个与抗病基因YrGn6紧密连锁的微卫星标记Xpsp 3 000,遗传距离为3.9 cm;将YrGn6定位于小麦1BS上。分析基因所在染色体的位置及抗病性特征,认为:YrGn6可能是一个新的抗小麦条锈病基因,并可用于分子标记辅助选择。
The cross progeny of Guinong 6 with disease resistance and Lumai 17 with disease susceptibility was inoculated by Tiaozhong 31, a wheat stripe rust physiological race, to analyze the stripe rust resistant heredity of Guinong 6. The results showed that there is a single dominant gene of stripe rust resistance in Guinong 6 and the gene is temporarily named as YrGn6. Xpsp 3000, a microsatellite site closely linked to YrCn6 was selected from 93 SSR primer combinations and its genetic distance was 3.9 em. YrGn6 located on 1BS may be a new stripe rust resistant gene and can be used in supplemental selection of molecular marker based on analyzing its position on chromosome and characteristic of stripe rust resistance.
出处
《贵州农业科学》
CAS
北大核心
2009年第8期7-10,共4页
Guizhou Agricultural Sciences
基金
贵州省科技计划课题"贵州省主要农作物病虫害预测预报及防控技术研究"[黔科合带帽字(2007)5003]
贵州省科学技术基金"贵州省小麦条锈病流行规律的研究"[黔科合J字(2007)2051]
