Submit or Track your Manuscript LOG-IN

Estimation of Heterosis and Combining Ability for Yield and Fibre Related Traits in Gossypium hirsutum L.

Estimation of Heterosis and Combining Ability for Yield and Fibre Related Traits in Gossypium hirsutum L.

Ali Hassan1, Javaria Ashraf1*, Salman Wahid1, Kamran Alyas1, Samaria Nisar1, Sadia Kanwal2, Nadia Hussain Ahmad2, Amna Bibi2 and Rameen Nawaz3

1Department of Plant Breeding and Genetics, Faculty of Agriculture and Environment, Islamia University of Bahawalpur, Pakistan; 2Cotton Research Institute, Multan, Pakistan; 3Institute of Plant Breeding and Biotechnology, Muhammad Nawaz Sharif University of Agriculture Multan, Pakistan.

 
*Correspondence | Javaria Ashraf, Department of Plant Breeding and Genetics, Faculty of Agriculture and Environment, Islamia University of Bahawalpur, Pakistan; Email: javaria.ashraf@iub.edu.pk 

ABSTRACT

The combining ability and heterosis analysis are the important biological phenomenon that has been used to select the top performing parents and hybrids in different crop plants. In cotton, heterosis of morphological and yield related traits using line × tester design is very important to identify best performing parents in future cotton breeding program. Therefore, in this study five lines (MNH-1020, MNH-1035, FH-152, CIM-632 and BS-20) were crossed with three testers (CEMB-100, RH-662 and NIAB-5) using line × tester crossing design, which resulted 15 F1 hybrids. The analysis of variance found significant variation between the parents and hybrids, demonstrating the presence of genetic diversity. For several traits including plant height, number of nodes per plant, number of bolls, boll weight, yield per plant, percentage of ginning outturn (GOT%), fiber length, micronaire value and fiber strength, the ratio of general combining ability (GCA) variance to specific combining ability (SCA) variance (2 GCA/2 SCA) indicated the prevalence of non-additive gene action. In addition, lines FH-152, CIM-632 and BS-20 showed a strong GCA impact for majority of the studied traits. Significant GCA effects were seen among the testers for most of the qualities in NIAB-5. Further, the hybrids FH-152 ×  NIAB-5 and CIM-632 × NIAB-5 displayed strong SCA effects, positive heterosis, and heterobeltosis for different important traits.

To share on other social networks, click on any share button. What are these?

Pakistan Journal of Zoology

June

Pakistan J. Zool., Vol. 56, Iss. 3, pp. 1001-1500

Featuring

Click here for more

Subscribe Today

Receive free updates on new articles, opportunities and benefits


Subscribe Unsubscribe