大豆对SMV3号株系的抗性鉴定及遗传分析  

Identification of Resistance of Soybean to SMV3 and Its Genetie Analysis

作　　者：徐芸[1] 常汝镇[2] 邱丽娟[2] 曲延英[1] 

机构地区：[1]新疆农业大学,新疆乌鲁木齐830052 [2]中国农科院作物科学研究所农业部作物种质资源与生物技术重点开放实验室,北京100081

出　　处：《新疆农业科学》2006年第5期352-356,F0003,共6页Xinjiang Agricultural Sciences

基　　金：国家农业部"948"项目(2001-2004);新疆主要农作物遗传与种质创新研究(XJEDU2004G07)

摘　　要：花叶病毒是危害大豆生产最重要的病害之一,培育抗病品种是防治花叶病毒病最经济而有效的方法。中国农科院育成品种中品95-5383对SMV3号株系表现高抗,构建杂交群体,遗传群体为来源于中品95-5383和IA2020的含有90个单株的F2分离群体,每个F2单株随机取30粒自交获得F2∶3家系。在苗期对F2∶3家系进行接种SMV3号株系,根据卡方检测,群体F2∶3接种鉴定比例为1∶2∶1,推测相应F2单株的基因型,分析其抗病遗传机理。接种鉴定结果表明,中品95-5383对SMV3的抗性受一对隐性基因控制。Mosaic vires is a serious disease of ,soybean in China, which is caused by the vires. It dramatically reduces soybean yield. So it is urgent to study the disease - resistant mechanism at the integral level and to improve disease resistance in soybean using conceive crossbreed population. It is a economical and effective way to breed vires - resistant variety. Analyzing the 95 - 5383, it＇ s disease - resistant mechanism. The F2 population came from the Zhongpin 95 - 5383 and IA2020 offspring, it includes 90 individual plant.The 30 grain soybean were taken from every F2 individual to get F2：3 ancestry, Using F2：3 ancestry after the intrusion SMV3 during the seedling, according to X2 test, the F2：3 population ratio is 1 ： 2 ： 1, conferring F2 individual genotype, The result indicated that 95 - 5383 carries one recessive gene that confesrs resistance to SMV3.

关 键 词：大豆 SMV3 抗性鉴定 

分 类 号：S565.103.4[农业科学—作物学]