Vol. 7, Issue 3 (2019)
Heterosis and combining ability for seed cotton yield and quality parameters in cotton (Gossypium hirsutum L.)
Author(s): MB Patel, BG Solanki and GO Faldu
Abstract: The present investigation was carried out at Main Cotton Research Station, Surat to study heterosis and combining ability for seed cotton yield and its component traits in cotton using 12 parents and resultant 35 hybrids along with one standard check GN.Cot.Hy.-14 in a line x tester mating design. A complete set of forty eight genotypes was planted in randomized block design in tree replicates at the Main Cotton Research Station, NAU, Surat during kharif 2016. Significant heterobeltiosis and standard heterosis observed for seed cotton yield as well as fibre quality parameters. The crosses viz., TCH 1777 X G Cot 20, HS 294 X G Cot 20, BGDS 1063 X G Cot 20, P- 5430 X 76-IH-20 and CCH- 14- 1 X G Cot 20 manifested significant heterobeltiosis and positive standard heterosis over check GN.Cot.Hy-14 for seed cotton yield. The ratio of GCA variance to SCA variance was less than unity except 2.5 % span length and fibre strength which indicated preponderance of non-additive genetic variance for inheritance of these traits. Among parents, G Cot 20 and CCH-14-1 were found good general combiners for seed cotton yield and its contributing traits, while parent LRA- 5166 exhibited good general combining ability for fibre quality traits. Best specific combinations were TCH 1777 X G Cot 20, HS 294 X G Cot 20, BGDS 1063 X G Cot 20, P- 5430 X 76-IH-20 and CCH- 14- 1 X G Cot 20 were recorded as the most promising based on per se performance and SCA effects so such crosses would be used commercially for future.
Pages: 1480-1484 | 444 Views 80 Downloads
download (5537KB)
How to cite this article:
MB Patel, BG Solanki, GO Faldu. Heterosis and combining ability for seed cotton yield and quality parameters in cotton (Gossypium hirsutum L.). Int J Chem Stud 2019;7(3):1480-1484.