Assessment of combining ability and genetic parameters for yield and fiber traits in upland cotton (Gossypium hirsutum L.) using Line × Tester analysis
Seed cotton yield and fiber quality are two critical parameters that fundamentally define the economic and industrial value of cotton. The present work focused on improving cotton genotypes both for yield and quality parameters through intraspecific crosses. Estimation of combining ability paramete...
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| Language: | English |
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Indian Society of Plant Breeders
2025-04-01
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| Series: | Electronic Journal of Plant Breeding |
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| Online Access: | https://www.ejplantbreeding.org/index.php/EJPB/article/view/5289 |
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| author | B. Aishwarya1*, B. R. Patil1, R. S. Patil2, M. G. Hegde3 and M. S. L. Rao4 |
| author_facet | B. Aishwarya1*, B. R. Patil1, R. S. Patil2, M. G. Hegde3 and M. S. L. Rao4 |
| author_sort | B. Aishwarya1*, B. R. Patil1, R. S. Patil2, M. G. Hegde3 and M. S. L. Rao4 |
| collection | DOAJ |
| description | Seed cotton yield and fiber quality are two critical parameters that fundamentally define the economic and industrial value of cotton. The present work focused on improving cotton genotypes both for yield and quality parameters through intraspecific crosses. Estimation of combining ability parameters for forty-five Gossypium hirsutum genotypes employed the Line × Tester mating design. Significant (p≤0.01) differences in mean squares values were observed across all studied traits for the genotypes. Regarding parental lines, P2-103 and P1-190 demonstrated the highest positive general combining ability (gca) effects for seed cotton yield per plant, boll weight, and number of bolls per plant, thereby being identified as exceptional combiners. From the comprehensive set of forty-five crosses, P1-62×Suraksha and P2-36×Subiksha emerged with notable positive specific combining ability (sca) effects across multiple traits. Non additive genetic variance (σ2D) predominantly exceeded additive genetic variance (σ2A) for most traits, suggesting potential exploitation of superior cross combinations through heterosis breeding strategies. |
| format | Article |
| id | doaj-art-189b8fc9af75430fa156059075fa71aa |
| institution | OA Journals |
| issn | 0975-928X |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Indian Society of Plant Breeders |
| record_format | Article |
| series | Electronic Journal of Plant Breeding |
| spelling | doaj-art-189b8fc9af75430fa156059075fa71aa2025-08-20T02:17:33ZengIndian Society of Plant BreedersElectronic Journal of Plant Breeding0975-928X2025-04-0116113314210.37992/2025.1601.010Assessment of combining ability and genetic parameters for yield and fiber traits in upland cotton (Gossypium hirsutum L.) using Line × Tester analysis B. Aishwarya1*, B. R. Patil1, R. S. Patil2, M. G. Hegde3 and M. S. L. Rao40 1 Department of Genetics and Plant Breeding, University of Agricultural Sciences, Dharwad, 580005, India. 2Principal Scientist and Head, Department of Genetics and Plant Breeding, Agricultural Research Station, Dharwad Farm, 580005, India. 3Department of Agricultural Entomology, University of Agricultural Sciences, Dharwad, 580005, India. 4 Department of Plant Pathology, University of Agricultural Sciences, Dharwad, 580005, India. *E-Mail: aishwaryab5003@gmail.com Seed cotton yield and fiber quality are two critical parameters that fundamentally define the economic and industrial value of cotton. The present work focused on improving cotton genotypes both for yield and quality parameters through intraspecific crosses. Estimation of combining ability parameters for forty-five Gossypium hirsutum genotypes employed the Line × Tester mating design. Significant (p≤0.01) differences in mean squares values were observed across all studied traits for the genotypes. Regarding parental lines, P2-103 and P1-190 demonstrated the highest positive general combining ability (gca) effects for seed cotton yield per plant, boll weight, and number of bolls per plant, thereby being identified as exceptional combiners. From the comprehensive set of forty-five crosses, P1-62×Suraksha and P2-36×Subiksha emerged with notable positive specific combining ability (sca) effects across multiple traits. Non additive genetic variance (σ2D) predominantly exceeded additive genetic variance (σ2A) for most traits, suggesting potential exploitation of superior cross combinations through heterosis breeding strategies.https://www.ejplantbreeding.org/index.php/EJPB/article/view/5289cottonline x testercombining abilitygcasca |
| spellingShingle | B. Aishwarya1*, B. R. Patil1, R. S. Patil2, M. G. Hegde3 and M. S. L. Rao4 Assessment of combining ability and genetic parameters for yield and fiber traits in upland cotton (Gossypium hirsutum L.) using Line × Tester analysis Electronic Journal of Plant Breeding cotton line x tester combining ability gca sca |
| title | Assessment of combining ability and genetic parameters for yield and fiber traits in upland cotton (Gossypium hirsutum L.) using Line × Tester analysis |
| title_full | Assessment of combining ability and genetic parameters for yield and fiber traits in upland cotton (Gossypium hirsutum L.) using Line × Tester analysis |
| title_fullStr | Assessment of combining ability and genetic parameters for yield and fiber traits in upland cotton (Gossypium hirsutum L.) using Line × Tester analysis |
| title_full_unstemmed | Assessment of combining ability and genetic parameters for yield and fiber traits in upland cotton (Gossypium hirsutum L.) using Line × Tester analysis |
| title_short | Assessment of combining ability and genetic parameters for yield and fiber traits in upland cotton (Gossypium hirsutum L.) using Line × Tester analysis |
| title_sort | assessment of combining ability and genetic parameters for yield and fiber traits in upland cotton gossypium hirsutum l using line tester analysis |
| topic | cotton line x tester combining ability gca sca |
| url | https://www.ejplantbreeding.org/index.php/EJPB/article/view/5289 |
| work_keys_str_mv | AT baishwarya1brpatil1rspatil2mghegde3andmslrao4 assessmentofcombiningabilityandgeneticparametersforyieldandfibertraitsinuplandcottongossypiumhirsutumlusinglinetesteranalysis |