PJB-2023-229
Genetic analysis of F1 and F2 generations for early mature, yield and fibre traits in upland cotton (Gosypium hirsutum L.)
Ghulam Murtaza Channa, Zahoor Ahmed Soomro and Tanweer Fatah Abro
DOI:10.30848/PJB2025-3(34)
Abstract
The Current study was conducted to genetically analysis the F1 and F2 generation for early mature, yield and fibre traits in upland cotton. During the studied parents, F1 and F2were highly significant confirming the presence of variation among the genotypes. The parents MNH-886 and CRIS-342 recorded with highest mean performance. In F1 and F2, generally, it could be concluded that the parent IR-3701 and MNH-886 were the best combiners for many traits. The Specific Combining Ability (SCA) effects showed the excellent combinations for direct and reciprocal crosses i.e. plant height MNH-886 x CRIS-342; for no. of nodes to first fruiting branch IR-3701 x CRIS-342; for no. of days to first square MNH-886 x Bakhtawar; no. of days to 1st flower Bakhtawar x CRIS-342; for no. of sympodia plant-1Bakhtawar x CRIS-342; for earliness index IR-3701 x Bakhtawar; for days to 1st open bolls MNH-886 x Bakhtawar; Boll maturation period (BMP) Sindh-1 x CRIS-342; no. of boll at 90 days MNH-886 x Sindh-1; for no. of bolls plant-1 IR-3701 x CRIS-342; for seed yield plant-1 Sindh-1 x CRIS-342; for GOT% MNH-886 x IR-3701; staple length IR-3701 x Bakhtawar. Thus, these parents, and hybrids for selection of early and yield-related traits in later generations could be utilized to the improvement of yield-related traits in short duration seasons in the cotton breeding programs under variable weather conditions for maximizing cotton production.
To Cite this article:
Channa, G.M., Z.A. Soomro and T.F. Abro. 2025. Genetic analysis of F1 and F2 generations for early mature, yield and fibre traits in upland cotton (Gosypium hirsutum L.). Pak. J. Bot., 57(3): DOI: http://dx.doi.org/10.30848/PJB2025-3(34)
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