大豆对大豆疫霉根腐病抗性的遗传分析  

Inheritance of Resistance to Phytophthora sojae in Soybean

作　　者：孙石[1] 赵晋铭[1] 武晓玲[1] 郭娜[1] 王源超[2] 盖钧镒[1] 邢邯[1] 

机构地区：[1]南京农业大学大豆研究所,国家大豆改良中心/作物遗传与种质创新国家重点实验室,南京210095 [2]南京农业大学农业部病虫监测与治理重点开放实验室,南京210095

出　　处：《中国农业科学》2009年第2期492-498,共7页Scientia Agricultura Sinica

基　　金：农业部行业专项(nyhyzx07-053);“长江学者和创新团队发展计划”创新团队项目

摘　　要：【目的】研究大豆对大豆疫霉根腐病完全抗性和部分抗性两种抗性的遗传方式。【方法】利用不同抗性类型的品种(系)配置4个杂交组合,在分别采用下胚轴伤口接种法和根部接种法接种大豆疫霉菌株PNJ1条件下,研究两种抗性的遗传模式。【结果】豫豆25和郑92116对大豆疫霉菌的抗性由一对显性单基因控制,General和Conrad对大豆疫霉菌的部分抗性由1对加性主基因+加性-显性多基因控制,F2代主基因和多基因遗传率分别为41.31%～74.84%和15.60%～50.36%,F2:3代主基因和多基因遗传率分别为54.21%～77.05%和13.52%～38.24%。大豆对疫霉根腐病完全抗性和部分抗性分别属于不同的遗传体系。【结论】两类抗性都有育种价值,并且在早世代选择是有效的。选育聚合有完全抗性和部分抗性的品种是使大豆获得疫霉根腐病高水平抗性和持久抗性的最佳途径。[Objective] The objective of this study was to reveal the mechanisms of resistance to Phytophthora sojae in soybean [Glycine max （L.） Merr]. [Method] Four crosses between materials with complete or partial resistance were used to reveal the inheritance of resistance using the hypocotyls inoculation or root inoculation technique. [Result] The complete resistance in soybean cultivars （lines） Yudou25 and Zheng92116 was controlled by a single dominant gene （Rps）, while the partial resistance in General and Conrad by one additive major gene plus additive-dominant polygene. The heritability values of resistance in development were about 90%, those of major and polygene were 41.31%-74.84% and 15.60%-50.36% in F2, and 54.21%-77.05% and 13.52%-38.24% in F2：3, respectively. The complete resistance and partial resistance were controlled by different genetic systems. [Conclusion] Both kinds of resistance can be used in soybean improvement, and it would be effective to conduct selection in early generations for high resistance in breeding, combining partial resistance with specific Rps genes to provide long term management of Phytophthora root rot as well as to avoid the boom-and-bust cycle of single gene deployment.

关 键 词：大豆 疫霉根腐病 遗传 

分 类 号：S565.1[农业科学—作物学]