STABILITY STUDY ON BASAL AND NON-BASAL BRANCHING GENOTYPES OF INDIAN MUSTARD (Brassica juncea L. Czern & Coss) UNDER DIFFERENT MOISTURE REGIMES

Abstract

The present study was undertaken with 20 genotypes, under four environments conducted in Randomized Complete Block Design in 3 replications and evaluated 33 morpho-physio-biochemical traits suggested that significant G-E interaction including environment (linear), linear component of G-E interaction and pooled deviation (non-linear) were indicating considerable genetic variability for most of the studied traits. Role of the environmental variation has no influence on siliqua density (0.32), length of siliqua (1.50), chlorophyll content (0.49), proline (0.17), 1000 seed weight (1.51) and oil content (1.97). Out of eleven stable genotypes, seven (NRCDR-2, TM-151, Kranti, PKRS-28, TM-128, PM-28 and RAURD-78) in poor ( X >μ, bi<1, NS S2di), two (Rajendra Suphlam and KMR 10-2) in average ( X >μ, bi=1, NS S2di) and two (Rohini and RH8814) in rich ( X >μ, bi>1, NS S2di) environments. For none of the 11 stable genotypes days to first flower open reflected stability and needs attention for ideotype development except RH-8814 (= 41.42, bi=1.69, S2di=0.42) in rich environments. The major outcome of research is that NRCDR-2 is the most stable genotype in poor whereas popular variety Rajendra Suphlam stable in average environments can be suggested to farmers and also yield determinants RV, RL and HFPB are most important for residual moisture – rainfed environments.