Heterosis study for yield and yield attributes in cotton (Gossypium hirsutum L.)

Abstract

The present study was undertaken by thirteen parents (4 lines and 9 testers) and their thirty-six resultant crosses with a check GN. Cot. Hy-14 was evaluated in a randomized block design with three replications in line × tester manner during kharif 2019-20 at Main Cotton Research Station, Navsari Agricultural University, Surat. The heterobeltiosis for seed cotton yield per plant ranged from -37.78 to 46.51 per cent, while the standard heterosis for grain yield per plant ranged from -45.25 to 34.77 per cent. The highest value of heterobeltiosis and standard heterosis were PBH-116 × TCH-1828 (46.51%) and GISV-171 × GJHV-523 (34.77%). For seed cotton yield four crosses viz., PBH-116 × TCH-1828, PBH-116 × SCS-1061, GSHV-172 × TCH-1828, and GISV-171 × GJHV-523 recorded positive and significant heterobeltosis and standard heterosis. These four crosses also exhibited significant heterobeltosis and standard heterosis for yields contributing character like Bolls per plant, boll weight and seed index.