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大豆对SMV SC-7株系群的抗性遗传与基因定位
引用本文:战勇,喻德跃,陈受宜,盖钧镒. 大豆对SMV SC-7株系群的抗性遗传与基因定位[J]. 作物学报, 2006, 32(6): 936-938
作者姓名:战勇  喻德跃  陈受宜  盖钧镒
作者单位: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, 江苏南京210095;2.中国科学院遗传与发育生物学研究所, 北京100101
基金项目:中国科学院资助项目;科技部科研项目;国家科技攻关项目;江苏省自然科学基金;南京农业大学校科研和教改项目
摘    要:科丰1号×南农1138-2的P1、P2、F1和180个重组自交家系接种SC-7株系群的鉴定表明,P1与F1全抗,P2全感,说明抗性为显性;重组自交家系抗、感按1∶1分离,说明抗性由一对基因控制。利用王永军等的遗传连锁图对SC-7株系群的抗性基因进行连锁分析,将抗病基因Rsc-7定位于N8-D1b+W连锁群上,并与已定位的5个抗性基因中的3个连锁,还有一个与之相连锁的标记LC5T,其排列顺序和遗传距离为Rsa (30.6 cM) Rsc-7 (22.1 cM) Rn3 (10.3 cM) Rn1 (15.8 cM) LC5T。

关 键 词:大豆  大豆叶病毒(SMV)  SC-7株系群  抗性遗传  基因定位  
收稿时间:2005-05-23
修稿时间:2005-12-15

Inheritance and Gene Mapping of Resistance to SMV Strain SC-7 in Soybean
ZHAN Yong,YU De-Yue,CHEN Shou-Yi,GAI Jun-Yi. Inheritance and Gene Mapping of Resistance to SMV Strain SC-7 in Soybean[J]. Acta Agronomica Sinica, 2006, 32(6): 936-938
Authors:ZHAN Yong  YU De-Yue  CHEN Shou-Yi  GAI Jun-Yi
Affiliation:1.Soybean Research Institute of Nanjing Agricultural University; National Center for Soybean Improvement; and National Key Laboratory for Crop Genetics and Germplasm Enhancement, Nanjing 210095, Jiangsu;2.Institute of Genetics of Chinese Academy of Sciences, Beijing 100101, China
Abstract:The P1, P2, F1 and 180 RILs of Kefeng 1×Nannong1138-2 were inoculated with the SMV strain SC-7 for identification of their resistance. The results showed Kefeng 1 being resistant, Nannong 1138-2 being susceptible, F1 being resistant, and the RILs segregating in a 1:1 ratio, which indicated that a dominant gene controlled the resistance to SC-7. With linkage analysis, the resistance gene Rsc-7 was located on the linkage group N8-D1b+W and linked with three of five resistance genes and a RFLP maker LC5T. The order and genetic distance of linked genes were Rsa (30.6 cM) Rsc-7 (22.1 cM) Rn3 (10.3 cM) Rn1 (15.8 cM) LC5T.
Keywords:Soybean  Soybean Mosaic Virus(SMV)  Strain SC-7  Inheritance of resistance  Gene mapping
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