Heterosis study for seed cotton yield and its yield attributing traits in upland cotton (Gossypium hirsutum L.)

A study was made in upland cotton with 9 x 9 diallel to assess the extent of heterosis over standard check (G.Cot. Hy.14) for seed cotton yield and its related attributes traits at main cotton research station, Navsari Agricultural University Navsari, Gujarat. The highest heterotic effect were recorded in the hybrids GJHV-337 x GN.Cot-22, GJHV-337 x EC-10786 and GN.Cot-22 xKH-119 were promising hybrids in this study over the standard check for seed cotton yield per plant and its most of the yield attributing traits. Those hybrids exhibiting high heterosis for seed cotton yield per plant also had high heterosis for yield attributing characters. The study reveals good scope for commercial exploitation of heterosis as well as isolation of pure lines among the progenies of other heterotic F1 hybrids