Abstract
Soybean Mosaic Virus (SMV) is one of the most important soybean diseases in the world, and it seriously affects soybean yield and quality. In this paper, 405 SSR molecular markers were used in genome-wide scan to analysis 327 soybean varieties in the North of China. The purpose was to search the genetic loci and excellent resistance genes related to SMV1 and SMV3, and to reveal the differences between the genetic models of varieties. The results confirmed that the genetic differences among the tested varieties were large. Through the association analysis of the population genome-wide association (GWA) and linkage group association (LGA), 14 highly significant sites related to SN1 and SN3 were found. There are three sites related to SN1 (Sat-297, sat-296, sat-154) which are coincident with or adjacent to the resistance sites found by predecessors; while there are two at SN3 (Sat-154 and sat-726) which are coincident with previous studies, and sat-154 is a resistance site shared by SN1 and SN3. 7 genes related to resistance were obtained, of which Glyma13g25420 and Glycma13g25440, Glyma14g08700 and Glyma14g08710 has resistance genes on the NBS-LRR domain; Glyma14g08900, Glyma14g08910, and Glyma14g08920 have PLP2 (Patation-like Protein) resistance genes. This study provides an important reference for SMV resistance research and technical support for soybean resistance breeding.
Highlights
Soybean Mosaic Virus (SMV) is one of the major diseases affecting the world’s main soybean-producing areas
There are three sites related to SN1 (Sat-297, sat-296, sat-154) which are coincident with or adjacent to the resistance sites found by predecessors; while there are two at SN3 (Sat-154 and sat-726) which are coincident with previous studies, and sat-154 is a resistance site shared by SN1 and SN3. 7 genes related to resistance were obtained, of which Glyma13g25420 and Glycma13g25440, Glyma14g08700 and Glyma14g08710 has resistance genes on the NBS-LRR domain; Glyma14g08900, Glyma14g08910, and Glyma14g08920 have PLP2 (Patation-like Protein) resistance genes
This study provides an important reference for SMV resistance research and technical support for soybean resistance breeding
Summary
SMV is one of the major diseases affecting the world’s main soybean-producing areas. SMV is divided into different strains based on the host in various incidence regions. Wang divided common SMV in southern and northern China into 6 strains (Sa-Sf) and 3 strains (N1-N3), respectively Northeastern China is the main production area for quality soybeans. It is believed that the cultivation of SMV-resistant material is a relatively effective method for preventing and controlling the virus. In early research into SN1 and SN3, scholars had proposed different genetic models based on the resistance separation ratio of offspring in genetic groups. It is difficult to devise an accurate genetic model by analyzing the separation ratio, as the heredity of soybean SMV resistance is complex
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