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Estimation of heterosis for yield and yield components in Cotton (Gossypium hirsutum L.)

Author(s): Muhammad Shahid Mukhtar | Tariq Manzoor Khan

Journal: Pakistan Journal of Biological Sciences
ISSN 1028-8880

Volume: 3;
Issue: 9;
Start page: 1412;
Date: 2000;
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Keywords: mid parents | better parent value | upland cotton | f hybrids

Heterotic effects were studied over mid and better parents, for yield and primary yield components in 12 crosses of Gossypium hirsutum L. involving four indigenous varieties viz., CIM-1100, CIM-443, VH-57 and CIM-444. Maximum heterotic effects were found in all these traits ranging from 2.05 to 8.83% and all the crosses showed approximately 55% of positive heterotic effects over mid parent values. Positive heterobeltiosis was estimated in plant height and seed index. The crosses showing fair degree of heterotic effects may be used as a selection criteria for further strengthening the cotton breeding programme.
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