Harnessing mutagenesis-derived lines for the development of heterotic hybrids for yield and component traits in Indian mustard (Brassica juncea L. Czern & Coss)

Heterosis breeding approach is one of the most successful technological options being employed for the improvement of brassica variety for quality and quantity of seed yield and other yield related parameter. The present investigation was undertaken at Agriculture Research Farm of Institute of Agricultural Sciences, Banaras Hindu University, Varanasi during 2020-21 using line × tester analysis to study the heterosis in Indian mustard. Ten lines and 3 testers and their 30 F1 s were planted in a randomized complete block design with three replications. Significant differences indicated the presence of adequate genetic variability among the parents as well as crosses. The most heterotic cross combinations were RH-749 × TM-117, RH-749 × TM-130, RH-749 × TM-143, RH-749 × TM-217 and HUJM-10-6 × TM-263-3 showed the high per se performance coupled with high, better parent heterosis, mid-parent and standard heterosis over the national check Kranti for seed yield per plant, seed yield per hectare and other yield associated traits. So, these cross combinations can be utilized for improving seed yield through improvement in yield related traits in Indian mustard.