Correlation and path analysis in advanced lines of rapeseed (Brassica napus) for yield components

Abstract

Thirty-six rapeseed genotypes including four cultivars and 32 advanced lines were evaluated in randomized
complete block design with three replications. Analysis of variance indicated significant genetic variation for
different seed yield contributing characters. Most variations among the genotypes were in seeds per siliqua
and siliquae on main raceme with 18.0 and 25.3 per cent coefficient of variation, respectively. Heritability
(bs) estimates were high for siliquae on main raceme, seeds per siliqua and siliquae per plant (0.70, 0.77 and
0.81, respectively). Siliquae per plant had significant positive correlation (0.80**) with seed yield and also it
had significant positive direct effect (0.85**) on seed yield. So any change for this trait will have considerable
effect on seed yield.