Inheritance and linkage study in soybean (Glycine max L. Merill)

Abstract

The primary goal of the present study was to investigate the inheritance patterns of qualitative traits such as flower color, leaf shape, pod pubescence color and seed hilum color in soybean. The study was carried out over two kharif seasons, 2021 and 2022, at the Research Cum Instructional farm in IGKV Raipur, India. Five parental lines((JS 97-52, JS 95-60, RVS 2012-11, RVSM 2011-35, and NRC 136) were crossed to produce F1 progeny (JS 97-52 × JS 95-60, JS 97-52 × RVS 2012-11, JS 97-52 × RVSM 2011-35 and NRC 136 × RVSM 2011-35), which were then observed for their dominant traits. In the F2 population, every individual plant was analyzed for the segregation of contrasting traits. The chi-square test was used to evaluate the observed and expected values of trait segregation. One primary gene was found to control the color of pod pubescence, leaf shape and flower color. The seed hilum color trait was found to be digenic in two crosses and monogenic in two other crosses. The test of independence showed that the characteristics flower color and pod pubescence color in the cross between JS 97-52 and RVS 2012-11 were linked and not independent.