Exploitable genetic variability and character association studies in Indian mustard Kumari Arpna*, Kumari Vedna, Kumar Vinod Department of Crop Improvement, CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur-176062, Himachal Pradesh, India *E mail: vinbarpa@gmail.com
Online published on 13 January, 2020. Abstract In order to assess the nature and extent of genetic variability and inter-relationships among seed yield and related traits, an experiment was conducted at CSKHPKV, Palampur during rabi 200809 and 2009–10. The pooled analysis of variance indicated that mean squares due to genotypes were significant for characters CGR (GS3), RGR (GS2), NAR (GS3), LAR (GS2), SLW (GS2), days to flower initiation, days to 50% flowering, days to 75% maturity, plant height, siliqua length, 1000-seed weight and harvest index. The g×e interactions were significant for RGR (GS2), days to flower initiation, number of secondary branches per plant, siliquae per plant, length of main shoot, siliquae on main shoot, seeds per siliqua, seed yield per plant, biological yield per plant and harvest index indicating that genotypic differences recorded in individual environments had vanished for these characters. The phenotypic and genotypic correlation coefficients revealed significant positive associations for number of primary branches per plant, siliquae on main shoot, biological yield and harvest index with seed yield. The path coefficient analysis revealed that biological yield and harvest index exhibited positive and high phenotypic and genotypic direct effects on seed yield. Therefore, these characters could be considered as the best selection parameters for the improvement in Indian mustard. Top Keywords Indian mustard, genetic variability, correlation, path coefficient analysis, seed yield. Top |