76个小麦种质资源抗叶锈及秆锈基因初步分析  

Genes for Leaf and Stem Rust Resistance in 76 Wheat Genetic Resources

作　　者：陈万权[1] 王剑雄[1] 

机构地区：[1]中国农业科学院植物保护研究所,北京100094

出　　处：《作物学报》1997年第6期655-663,共9页Acta Agronomica Sinica

基　　金：国家"八.五"攻关(85-01-02-07-02)部分内容

摘　　要：分别选用15个具不同毒性基因组合的叶锈菌系和10个具不同毒性基因组合的秆锈菌系推导分析了来自世界17个国家的76个小麦种质资源材料所携带的抗叶锈病和(或)抗秆锈病基因状况。在供试的39个已知抗叶锈病基因(或基因组合)和49个已知抗秆锈病基因(或基因组合)中,推导出了Lr1、Lr2c、Lr3、Lr3Ka、Lr9、Lr10、Lr13、Lr16、Lr17、Lr19、Lr25、Lr26、Lr27、Lr29、Lr30、Lr31、Lr33、Lr34等18个抗叶锈病基因和Sr5、Sr6、Sr8a、Sr9e、Sr13、Sr19、Sr23、Sr24、Sr26、Sr30、Sr31、Sr32、Sr33、Sr35、Sr36、Sr38等16个抗秆锈病基因,以单基因或基因组合的形式分别分布在42和33个小麦品种(系)中,其中,Lr1、Lr16、Lr26、Lr13+3Ka和Sr31、Sr38是供试材料的主要已知抗叶、秆锈病基因。初步发现一些品种(系)携带有Lr13、Lr34、Sr24、Sr26、Sr31和Sr36等已知持久抗锈基因(或基因组合)及不同于本研究所用的已知基因的未知基因。文中对持久抗锈基因及抗锈基因的遗传连锁等问题进行了讨论。Genes for resistance to leaf rust(Lr) and/or stem rust (Sr) in 76 wheat genetic resources from 17 countries were analyzed using 15 isolates of Puccinia recondita f. sp. tritici and 10 isolates of Puccinia graminis f. sp. tritici previously characterized for avirulence /virulence gene combination, respectively. Eighteen Lr genes:Lr1, Lr2c, Lr3, Lr3Ka, Lr9, Lr10, Lr13, Lrl6, Lrl7, Lrl9, Lr25, Lr26, Lr27, Lr29, Lr30, Lr31, Lr33, Lr34 of the 39 tested genes and sixteen Sr genes: Sr5, Sr6, Sr8a, Sr9e, Srl3, Srl9, Sr23, Sr24, Sr26, Sr30, Sr31, Sr32, Sr33, Sr35, Sr36, Sr38 of the 49 tested genes were postulated as present in 42 and 33 wheat varieties (or lines), separately, either alone or in combinations. The resistance genes Lr1, Lrl6, Lr26, Lrl3 + 3Ka, Sr31 and Sr38 were most commonly postulated. It was found that some wheat varieties (or lines) possessed Lr13, Lr34, Sr24, Sr26, Sr31 and Sr36 which were previously described as having durable resistance while some entries carried new unknown gene (s) for resistance to leaf or stem rust. Genes for durable rust resistance and genetic linkage of rust resistance genes were also discussed.

关 键 词：小麦 持久抗性基因 叶锈病 秆锈病 基因推导 

分 类 号：S512.103.4[农业科学—作物学]