Madras Agricultural Journal
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Research Article | Open Access | Peer Review

GENETIC ANALYSIS IN A DIALLEL CROSS OF INBRED LINES OF CASSAVA

Volume : 85
Issue: May-jun
Pages: 264 - 268
Published: July 01, 2023
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Abstract


A study to determine gene action, heritability and number of effective genes controlling 13 traits utilizing Jinks - Hayman diallel analysis of the populations raised by a fix6 diallel cross of fourth generation inbred lines of cassava showed that overdominance governed most of the traits including yield and yield components. The number of gene groups controlling various traits was estimated and root yield was found to be controlled by 3 gene groups. Very low narrow sense heritability obtained for yield and its components also revealed the preponderance of non-additive gene action. The (Vr. Wr graph confirmed the role of overdominance for yield and its major components. The standardised deviation graph was used to identify superior parents. The study indicated the possibility of genetic improvement in cassas a through heterosis breeding.

DOI
Pages
264 - 268
Creative Commons
Copyright
© The Author(s), 2025. Published by Madras Agricultural Students' Union in Madras Agricultural Journal (MAJ). This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited by the user.

Keywords


Cassava diallel overdominance yield components
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