Madras Agricultural Journal
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Research Article | Open Access | Peer Review

Hetreosis and inbreeding depression for yield and yield attributes in urdbean

Volume : 95
Issue: Jul-dec
Pages: 453 - 457
DOI:
Published: May 22, 2023
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Abstract


The exploitation of hybrid vigor in black gram depends on the direction and magnitude of heterosis, biological feasibilities, and the type of gene actions involved. Inbreeding is the basic mechanism for providing base materials for selection, and information on inbreeding depression is helpful in determining the effectiveness of selection. In this study, five intervarietal crosses were made using four parental lines, and observations were taken on various metric traits in the parents, F1, and F2 generations. Heterosis over mid and better parents in F1 and inbreeding depression in F2 were calculated. The mean seed yield of all hybrids was higher than their respective parents, indicating substantial heterosis for seed yield per plant. Hybrid combinations that showed higher estimates of heterosis also exhibited higher inbreeding depression.

DOI
Pages
453 - 457
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


Heterosis biological feasibilities gene actions and inbreeding
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