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VOL. 8, ISSUE 12 (2023)
Combining ability analysis over environments for yield and yield attributing traits in cotton (G. hirsutum L. × G. barbadense L.)
Authors
Anil D Adsare
Abstract
A study was carried out in interspecific cotton hybrids (Gossypium
hirsutum L. × Gossypium barbadense L.) to assess the genetic
potential and combining ability for yield and yield attributing characters at
three different locations in Maharashtra. Twelve lines of G. hirsutum and
five testers of G. barbadense were crossed in line × tester manner to
develop 60 F1 hybrids. All the traits showed significant differences
for environment x crosses Analysis of variance for combining ability revealed
the significant differences for all crosses, line effect and environment x
crosses for all traits. Selection of
suitable good general combiner parent through estimation of general combining
ability (GCA) effects, and superior cross combinations were identified for
commercial exploitation through estimation of specific combining ability (SCA)
effects. Four lines of G. hirsutum exhibited significant GCA effects
among these PH-1075 (0.182) revealed highest followed by PH348 (0.1140),
RAH-1065 (0.093) and SCS-793 (0.051), whereas in tester lines of G.
barbadense Sujata (0.178) showed significant positive GCA effect. Hybrid
RAH-1065 x Sujata (0.190) showed highest significant positive SCA effect
followed by PH348 x Sujata (0.184), LRA5166 x SB-425 YF (0.121), AKH081 x
SB-425 YF (0.112). The best parental lines and interspecific cross combinations
for seed cotton yield and other yield contributing traits could be utilized for
hybrid development on the basis of positive GCA and SCA effects.
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Pages:48-52
How to cite this article:
Anil D Adsare "Combining ability analysis over environments for yield and yield attributing traits in cotton (<i>G. hirsutum</i> L. × <i>G. barbadense </i>L.)". International Journal of Botany Studies, Vol 8, Issue 12, 2023, Pages 48-52
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