Genetic parameters and correlation studies in Indian mustard (Brassica juncea L.)

Abstract

Present study carried out with total 154 genotypes including 150 test genotypes and four checks (RH-1566, RH-1499-30, RH-749 and RH-8812) of Indian mustard. These genotypes were evaluated for seed yield and its yield components for eleven characters during rabi season of 2020-21 at CCS Haryana Agricultural University, Hisar. Analysis of variance showed highly significant genotypic difference for all the studied traits. The maximum variability (21.2%) was recorded for test weight and minimum for oil content (0.8%). The two characters namely, secondary branches/plant (91.7%) and test weight (89.6%) had very high broad sense heritability while, genetic advance was relatively high for test weight (41.4%), number of secondary branches/plant (37.2%) and seed yield/plant (31.6%). The results revealed that plant height, number of primary branches/plant, number of secondary branches/plant, main shoot length, number of siliqua on main shoot, siliquae length, number of seeds per siliqua and test weight have significant positive association with seed yield/plant, while path analysis revealed that number of primary branches/plant, number of secondary branches/ plant and siliqua length had the highest positive direct effects on seed yield/plant. All the traits have showed high heritability. The characters identified above as indirect yield components in formulating effective selection strategy for developing high yielding mustard genotypes.