CIMMYT抗条锈小麦种质CI-66和CI-7抗性遗传研究及其利用  

Inheritance of stripe rust resistance in two CIMMYT wheat germplasms CI-66 and CI-7 with regard to its utilization

作　　者：蒲宗君[1] 刘仲齐[2] 饶世达[1] 张顒[1] 杨武云[1] 郑有良[3] 

机构地区：[1]四川省农业科学院作物研究所,四川成都610066 [2]天津市农业生物技术研究中心,天津300192 [3]四川农业大学,四川雅安625014

出　　处：《西南农业学报》2007年第2期234-238,共5页Southwest China Journal of Agricultural Sciences

基　　金：四川省育种攻关;四川省青年基金;四川省应用基础

摘　　要：在小麦条锈病的常发区,对源于CIMMYT的CI-66和CI-7分别与川麦28杂交的F1、F2和BC1群体进行抗性鉴定,研究其成株期在自然发病条件下的抗性表现及杂交后代的抗感分离情况。结果表明,CI-66由1对显性纯合基因控制;CI-7则由1对显性基因和1对隐性基因的互补作用控制。同时,利用CIMMYT材料成功地选育出两份高抗条锈兼抗白粉病材料99B911和999B946。本文还利用30份CIMMYT小麦材料分析了成株抗性与播期的关系,为筛选稳定抗性小麦新材料提供了依据。Two CIMMYT wheat germplasms CI-66 and CI-7 showed highly resistance to local stripe rust races. In order to analyses the inheritance of resistances in CI-66 and CI-7, he Fl , F2 and BC1 populations of Chuanmai28/CI-66 and Chuanmai28/CI-7 were tested in natural condition and the hot spot of stripe rust epidemics,respectively. The phenotype of the F1 ,F2 and BC1 adult plants were investigated for responso to mixed rares. The results showed that resistance in the CI-66 was eontroned by one dominant gene. The resistance of CI-7 was controlled by complementary action of one dominant geae and one recessive geae. And two advanced line 99B911 and 998946 with high resistanees to stripe rust and powdery mildew,were successfully developed by using CIMMYT resistant germplasm. Thirty CIMMYT germplasms were also employed to evaluate the relationship between stripe rust resistance and sowing date for screening wheat lines with stable resistance.

关 键 词：CIMMYT小麦 条锈病 遗传分析 播种期 

分 类 号：S512.1[农业科学—作物学]