Phenotypic stability for seed yield and component characters in Ethiopian mustard (Brassica carinata A. Braun).

摘要

The present study on stability of seed yield and its component characters was undertaken during rabi seasons of 2002-03, 2003-04, 2004-05 and 2005-06 involving eight diverse genotypes of Ethiopian mustard (Brassica carinata A. Braun). Significance of genotype x environment interaction for days to 50% flowering, days to 75% maturity, 1000-seed weight and seed yield indicated the varying performance of genotypes for these characters across the environments. Predictable as well as non-predictable components contributed significantly towards the differential response of genotypes observed for days to 50% flowering and 1000-seed weight. For seed yield, only one genotype PCC-5, having average stability over years, could be considered an ideal genotype. Three other genotypes viz., HC-9605, Kiran and Jayanti exhibited average stability for days to 50% flowering and 1000-seed weight besides recording high per cent oil content (40.1 to 41.3%).