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.