Formerly International Journal of Basic and Applied Agricultural Research

Selection parameters and heterosis for grain yield and yield contributing traits in yellow sarson (Brassica rapa var. yellow sarson)

Pantnagar Journal of Research, Volume - 21, Issue - 1 ( January - April, 2023)

Published: 2023-04-30

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The present investigation was undertaken with an objective to assess the selection parameters and extent of heterosis in Yellow sarson (Brassica rapa var. yellow sarson). Forty F1. along with 10 lines as female and 4 testers as males were included in experimental material for generating the information. Analysis of data showed presence of wide range of variability for various characters under study. The estimates of phenotypic coefficients of variability (PCV) were found higher than genotypic coefficient of variability (GCV) and environmental coefficient of variability (ECV). Maximum heritability was recorded for seed/siliqua (94.30%), followed by seed yield per plant (90.61%) and number of primary branches/plant (84.59%) along with high genetic advance for seed yield/plant (32.34%), seed/siliqua (29.12%) and number of primary branches/plant (21.70%). For days to maturity, NDYS-2018×NDYS-113 (-12.21**), NDYS-2018 × Pusa Gold (-11.62**) and B-9 × PPS-1(-8.65**) recorded highest better parent heterosis, relative heterosis and economic heterosis respectively. NDYS-115 × Pusa Gold (-15.69**, - 15.85**) possessed highest estimates of heterobeltiosis and mid parent heterosis while NDYS-2018×NRCYS-05-01 (-9.65**) registered highest estimate of economic heterosis for plant height. For seed yield maximum heterobeltiosis and relative heterosis was observed in cross, Jhumka × NDYS-113 (52.36**, 65.34**) while NDYS-128 × PPS-1 (41.54**) was the best cross with respect to economic heterosis. The Cross, NDYS-128 × NDYS-113 (24.47**) expressed highest estimate of heterosis over better parent and maximum relative and economic heterosis was possessed by NDYS-132 × NDYS-113 (25.18**, 22.29**) respectively

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