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作 者 ：战勇;喻德跃; 陈受宜; 盖钧镒

期 刊 ：作物学报 2006年 32卷 06期 页码：936-938

关键词：大豆；大豆叶病毒(SMV)；SC-7株系群；抗性遗传；基因定位；

Keywords:Soybean, Soybean Mosaic Virus (SMV), Strain SC-7, Inheritance of resistance, Gene mapping,

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。

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.

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