Assessment of gene action and combining ability for fibre and yield contributing trais in interspecific and intraspecific hybrids of cotton

Sana Munir, Muhammad Kamran Qureshi, Ahmad Naeem Shahzad, Hamid Manzoor, Muhammad Ahmad Shahzad, Kashif Aslam and Habib-Ur-Rehman Athar
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Sana Munir: Department of Plant Breeding and Genetics, Bahauddin Zakariya University, Multan, Pakistan
Muhammad Kamran Qureshi: Department of Plant Breeding and Genetics, Bahauddin Zakariya University, Multan, Pakistan
Hamid Manzoor: Institute of Molecular Biology and Biotechnology, Bahauddin Zakariya University, Multan, Pakistan
Muhammad Ahmad Shahzad: Department of Statistics, Bahauddin Zakariya University, Multan, Pakistan
Kashif Aslam: Institute of Molecular Biology and Biotechnology, Bahauddin Zakariya University, Multan, Pakistan
Habib-Ur-Rehman Athar: Institute of Pure and Applied Biology, Bahauddin Zakariya University, Multan, Pakistan

Czech Journal of Genetics and Plant Breeding, 2018, vol. 54, issue 2, 71-77

Abstract: Combining ability analysis was performed in order to identify high-yielding genotypes and hybrids. Six lines were crossed with three testers using a line × tester mating design. General combining ability (GCA) of parents, specific combining ability (SCA) of hybrids and gene action for several yield components and fibre were studied in the experiment. Additive gene action was observed in most traits except bolls/plant, sympodia/plant, monopodia/plant, total nodes, seed index, lint/seed, staple strength and seed cotton yield/plant which were influenced by non-additive gene action. GCA revealed that Giza-7 was a good general combiner for staple length, staple strength, seed index, boll weight, bolls/plant and monopodia/plant and BH-167 was good for ginning outturn (GOT) and sympodia/plant. Results of SCA values for hybrids indicated, that the cross Giza-7 × MNH-886 was a superior specific combiner for staple length, monopodia/plant, staple strength and seed cotton yield/plant; CIM-554 × CIM-557 for boll weight, sympodia/plant and lint weight/boll; BH-167 × MNH-886 for GOT and bolls/plant. Selection of such hybrids and good general combiners could be further exploited for yield improvement.

Keywords: general combining ability; ginning outturn; line × tester analysis; specific combining ability (search for similar items in EconPapers)
Date: 2018
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlcjg:v:54:y:2018:i:2:id:54-2017-cjgpb

DOI: 10.17221/54/2017-CJGPB

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