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Screening and agronomic character investigation of resistant germplasms to the popular strains of Soybean mosaic virus (SMV) in Zhejiang Province

  

  1. (1 Hangzhou Sub\|center of National Soybean Improvement, Institute of Crops and Nuclear Technology Utilization, Zhejiang Academy of Agricultural Sciences,Hangzhou 310021, China;2 National Center for Soybean Improvement, Soybean Research Institute, Nanjing Agricultural University, Nanjing 210095, China)
  • Online:2015-04-25 Published:2015-04-30

Abstract: SC9 and SC15 are the most popular Soybean mosaic virus (SMV) strains in Zhejiang Province. In order to screen for resistant materials to these two popular SMV strains, 55 cultivated soybean and 39 wild soybean germplasms were inoculated with these two strains in two independent experiments. The results showed that 12 and 15 cultivated soybeans were highly resistant to strain SC9 and SC15, respectively, accounting for 218% and 273% of the tested cultivated soybeans, respectively. Ten of them were highly resistant to both SC9 and SC15. These resistant materials mainly came from Zhejiang, Liaoning and Jiangsu Provinces. Only 1 wild soybean germplasm showed moderate resistance to SC15, and all the others were susceptive to SC9 and SC15 in different degrees. Agronomic traits investigation of these resistant materials showed that the node number, pod number and seed number of Kaixinlyubaoshi were significantly higher than other germplasms. Kanghan 1 exhibited larger pod length, pod width, 100\|seed weight and protein content. The germplasm 23037\|1 and Zhenong 8 showed higher protein content and soluble sugar content, respectively. These resistant germplasms with better agronomic traits could be further used in soybean breeding, production, and SMV related researches.

Key words: cultivated soybean, wild soybean, Soybean mosaic virus, resistance identification, agronomic traits