Marker-assisted pyramiding of soybean resistance genes RSC4, RSC8, and RSC14Q to soybean mosaic virus

Journal of Integrative Agriculture

Lin ZHAO¹  Kai LI²  Li-qun WANG³  Yun-hua YANG³  Hai-jian ZHI³  Da-gang WANG³  Yong-qing YANG³  Ying MA³ 

[1] Crop Institute, Anhui Academy of Agricultural Sciences/Anhui Key Laboratory of Crops Quality Improving, Hefei 230031, P.R.China;WANG Da-gang;College of Agriculture, Nanjing Agricultural University/National Center for Soybean Improvement/National Key Laboratory for Crop Genetics and Germplasm Enhancement, Nanjing 210095, P.R.China;

关键词: soybean;    soybean mosaic virus;    resistance genes;    pyramiding;    marker-assisted breeding;   

DOI  :  

来源: DOAJ

【 摘 要 】

Soybean mosaic virus (SMV) is one of the major viral pathogens affecting soybean crops worldwide. Three SMV resistance genes, RSC4, RSC8, and RSC14Q, have been identified and mapped on soybean chromosomes 14, 2, and 13 from Dabaima, Kefeng 1, and Qihuang 1 cultivars, respectively. Soybean cultivar Nannong 1138-2 is widely grown in the Yangtze River Valley of China. In this study, crosses were made between Qihuang 1×Kefeng 1 and Dabaima×Nannong 1138-2. Ten simple sequence repeat (SSR) markers linked to three resistance loci (RSC4, RSC8, and RSC14Q) were used to assist pyramided breeding. Pyramided families containing three resistance loci (RSC4, RSC8, and RSC14Q) were evaluated by inoculating them with 21 SMV strains from China. Results indicated that the 10 markers can be used effectively to assist the selection of resistant individuals containing RSC4, RSC8, and RSC14Q A total of 53 F6 plants were confirmed to contain three homozygous alleles conferring resistance to SMV. Five F7 homozygous pyramided families exhibited resistance to 21 strains of SMV and showed desirable agronomic traits using dual selection. The strategy of pyramiding resistance gene derived from different varieties has practical breeding value in providing broad-spectrum resistance against the existing strains of SMV in China.

【 授权许可】

Unknown