Expression of heterosis for yield and its components in indian mustard (brassica juncea l. czern & coss) under timely sown irrigated conditions

Abstract

Nine Indian mustard genotypes including standard check, RB-50 and their hybrids were sown under timely sown irrigated condition to study the extent of relative, heterobeltiosis and standard heterosis for seed yield and its components. The analysis of variance revealed that considerable genetic variation existed among the parents and hybrids for most of the traits under study. RB-50×Kranti showed positive and significant value for all the three types of heterosis for 1000 seed weight. RH-119×Giriraj, RGN-298×RH-749, RGN-298×Giriraj, Vardan×RH-749 and Vardan×Giriraj showed standard heterosis for seed yield per plant as well as number of primary and secondary branches. The cross combinations Vardan×Giriraj, RGN-298×RH- 749, RGN-298×Giriraj, Vardan×RH-749 and Vardan×RGN-73 were identified on the basis of standard heterosis alogwith per se performance for seed yield per plant which, could be exploited for getting transgressive segregants in the subsequent generation for developing high yielding varieties. © 2020 Plant Archives. All rights reserved.