Stability analysis for yield and yield attributes in Indian mustard [Brassica juncea L.]

An experiment was conducted on twenty genotypes of Indian mustard (Brassica juncea L) in three different environments created by three dates of sowing i.e. 20th September, 10th October, 30th October, 2022 during Rabi 2022-2023 in randomized block design with three replications to estimate genotype x environment interaction and stability parameters for days to 50 percent flowering, days to maturity, plant height (cm), primary branches per plant, secondary branches per plant, number of siliquae per plant, number of seeds per siliqua, length of siliqua (cm), seed yield per plant (g), test weight (g) and oil content (percent). The stability analysis was carried out according to Eberhart and Russell model (1966). The environmental effects were significant for all the traits, while genotype x environment interaction was significant for almost all the traits except length of siliqua. Genotypes RH 0406 and NRC HB 101 had below average stability for seed yield per plant (g) & other most of the yield contributing characters and suitable for better environment (environment-I). Genotypes Pusa Mustard 26 and Pusa Double Zero Mustard 31 had above average stability for seed yield per plant (g) and suitable for poor environment (environment-III). Genotypes Pusa mustard 25 and Divya-33 were found most stable for seed yield per plant, which can be grown in wide range of environments (all three dates of sowing).