Combining Ability for Developmental Traits in some Advanced Generations in Dwarf Pennisetums

Ziauddin, Ahmad and Murty, B. R and Harinarayana , G (1973) Combining Ability for Developmental Traits in some Advanced Generations in Dwarf Pennisetums. Indian Journal of Genetics and Plant Breeding, 33 (1). pp. 16-23.

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The components of genetic variation for the developmental traits indicated the predominance of additive genetic variance in the F2 and F3 of a 22 × 22 diallel in dwarf Pennisetum. However, these estimates were lower than those obtained with the F1 with substantial reduction in σ2g but increase in σ2e. The relative ranking of parents on the basis of mean performance and the gca effects were similar in the F1, F2 and F3 diallels. Among them, seven were found to be promising in both the generations. Parent 1 was outstanding and combined well for quality characters and rust resistance. These parents with high productivity were also synchronous in tillering indicating their developmental stability. The study has indicated the feasibility of using the F2 and F3 of diallels for estimating combining ability provided large number of parents are involved and no selection is practised at any stage and large populations of the segregating generations are included in the experiment.

Item Type: Article
Author Affiliation: Division of Genetics, Indian Agricultural Research Institute, New Delhi-12
Subjects: Crop Improvement
Divisions: General
Depositing User: Library ICRISAT-InfoSAT
Date Deposited: 12 Mar 2012 06:09
Last Modified: 12 Mar 2012 06:09
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