Combining ability among interspecific (G. hirsutum x G. barbadense) and mutation derived lines of cotton in fiber quality and agronomic traits

Abstract: 
Zambia’s cotton has had a very good reputation on the international market for a long time. In order to maintain this reputation, the cotton Development Trust of Zambia continues to evaluate germplasm for suitable parents. In this study, the combining ability of crosses between cotton mutants and interspecific lines was evaluated. Crosses influenced all cotton quality traits significantly (P<0.01). Both additive and nonadditive gene action were important in controlling all fibre quality traits except yield and earliness. Narrow sense heritability was low, implying that selection must be made in later generations of breeding. Line MFKF-20Kr was the best combiner and should be considered as a parental source for most quality traits in Zambia’s cotton.
Le coton Zambien a eu une réputation excellente sur le marché international pendant une longue période. Afin de maintenir cette réputation, la firme fiduciaire de développement de coton de la Zambie continue à évaluer le support génétique pour les parents appropriés. Dans cette étude, la capacité de combinaison des croix entre les mutants de coton et les lignées interspécifiques a été évaluée. Les croix ont influencé de manière significative (P<0.01) tous les traits de qualité du coton. L’action additive et l’action non-additive de gène étaient importantes dans la surveillance de tous les traits de qualité de fibre excepté le rendement et la précocité. L’héritabilité étroite de sens était basse, impliquant que le choix doit être fait dans les générations postérieures de la reproduction. La lignée MFKF-20Kr était le meilleur combinateur et devrait être considérée comme source parentale pour la plupart des traits de qualité du coton Zambien.
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Date of publication: 
2010
Country: 
Region Focus: 
Southern Africa
University/affiliation: 
Collection: 
RUFORUM Conferences and Workshops
Licence conditions: 
Open Access
Access restriction: 
Form: 
Printed resource
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E_ISSN: 
Edition: 
Extent: 
417-420
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About the RUFORUM 2010 Biennal Conference
"The 2010 RUFORUM Biennial Conference was the second in the series. The main objective of the Biennial conferences is to provide a platform for agricultural research for development stakeholders in Africa and beyond to actively exchange findings and experiences, while at the same time learning lessons towards improving performance of the agricultural sector and ultimately people’s livelihoods. The biennial conference is RUFORUM’s most comprehensive meeting for the diversity of stakeholders in agriculture. It is especially dedicated to graduate students and their supervisors, grantees in RUFORUM member universities and alumni. It is a platform for peer review, quality control, mentorship, networking and shared learning. This record contains an extended abstract accepted under the theme of Plant Breeding"