Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2020, Vol. 36 ›› Issue (1): 43-48.doi: 10.11924/j.issn.1000-6850.casb20190700385

Special Issue: 油料作物

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Genetic Distance of Soybean Parents and Heterosis: Correlation Study

Wu Qian1,2, Li Zhi2, Yu Wei2, Li Jiekun1, Hu Guoyu1, Wang Dagang1, Huang Zhiping1()   

  1. 1 Crop Research Institute of Anhui Academy of Agricultural Science/Key Lab of Crop Quality Improvement of Anhui, Hefei 230031;
    2 Fuyang Academy of Agricultural Sciences, Fuyang Anhui 236065
  • Received:2019-07-05 Revised:2019-08-20 Online:2020-01-05 Published:2020-01-07
  • Contact: Huang Zhiping E-mail:hzhpsoy@163.com

Abstract:

The prediction of heterosis could improve the breeding efficiency. We selected 10 materials from different regions at home and abroad, and matched 45 hybrid combinations according to the incomplete diallel cross model (NCⅡ), and predicted the heterosis of soybean parents by the genetic distance of SSR molecular markers. The results showed that: 417 polymorphic alleles were detected in 10 parents; the variation range of polymorphic loci was 2-5, the genetic similarity coefficient (GS) varied from 0.520 to 0.695, and the average GS was 0.5996; 10 test materials could be divided into two categories, the heterosis value of F1 was from 3.4% to 42.1%, indicating that all the traits of F1 had positive heterosis in different degrees; the correlation between the heterosis value and genetic distance was 0.461, reaching a significant level; the correlation between the other 8 agronomic and quality traits and the genetic distance was positive, but the correlation coefficient was not significant. The results of heterosis prediction of 10 soybean parents by using 174 SSR molecular markers are not obvious, and the methods of soybean heterosis prediction by molecular markers need to be further explored.

Key words: soybean parents, heterosis, molecular marker, genetic distance, correlation, heterosis predication

CLC Number: