Correlation and path coefficient analyses for grain and fodder yield in F1 and F2 generations of oats (Avena sativa L.)

Abstract

The field experiment was conducted in Rabi 2023-24 at Student Instructional Farm, C. S. Azad University of Agriculture and Technology, Kanpur (U.P.). This study aimed to assess the association between grain and fodder yield traits using 10 oats genotypes crossed in a half-diallel design, resulting in 45 F1 hybrids. The experimental material consisted of 100 treatments (10 parents, 45 F1s and 45 F2s) arranged in Randomized Block Design (RBD) with three replications. It was found that seed yield per plant showed positive correlation with plant height, number of tillers per plant, leaf: stem ratio, biological yield per plant and harvest index in both no cut and single cut. Path coefficient analysis revealed positive direct effects towards grain yield per plant were shown by plant height, number of tillers, leaf length, leaf: stem ratio, biological yield per plant and harvest index under no cut, however under single cut with plant height, number tillers per plant, number of leaves per plant, spike length, biological yield per plant and harvest index. Also, positive direct effects on green fodder yield per plant were observed for days to maturity, dry matter yield, biological yield per plant, grain yield per plant.