Correlation and Path Coefficient Studies for Kernel Yield and Component Traits in Maize

Abstract

Correlation and path coefficient analysis for kernel yield and yield components was under taken in 49 maize inbred lines using simple lattice design with two replications during kharif, 2018 at Agricultural Research Station, Peddapuram, East Godavari district, Andhra Pradesh in order to understand the relationship between kernel yield and its component traits. The studies revealed significant and positive association of kernel yield plant -1 with cob length, cob girth and cob yield plant -1 at both phenotypic and genotypic levels. The path analysis revealed high positive and direct effect of cob yield plant -1 for kernel yield plant -1 in addition to strong positive association with kernel yield per plant indicating its true relationship with kernel yield plant -1. Considering the nature and quantum of trait associations and their direct and indirect effects, cob yield plant -1 is identified as important selection criteria for effecting kernel yield improvement in maize.