Inheritance of protein content in pennisetum typhoides

Harinarayana, G and Murthy, B.R (1970) Inheritance of protein content in pennisetum typhoides. Indian Journal of Genetics and Plant Breeding, 30 (2). pp. 280-286.

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Twenty-two dwarf derivative inbred pearl millet parents and 231 F1 hybrids among them were evaluated for the quality component, protein content, to know the nature of gene action and combining ability, using full and fractional diallels. The range of variation for protein content was found to be much higher in the hybrids than in the parents, although the parents had much higher protein content than many of the hybrids. The differences between the overall means of the parents and hybrids were negligible. Hybrids did not also show heterosis. Predominantly non-additive gene action was observed for protein content in pearl millet. A derivative of (D2 X D4)F7 was found to be the best general combiner. In general, hybrids with more than 18 per cent protein were found to be the ‘ derivatives of D2 and/or D4. Protein content could not be related to productivity indicating that desirable recombinants could be obtained with respect to protein content, productivity and plant height. The predominance of non-additive gene action for protein content and for several other characters indicated that the diversity of alleles rather than heterozygosity per se is important in bringing about adaptive changes. It is, therefore, suggested that cyclic inbreeding and selective combination of lines to form gene pools appears to be more promising. The several fractional diallels not only confirmed the above results but also indicated that a partial diallel cross with s=n/2 was optimum. Although, triangular design-1 was found to be better in special cases, the flexibility of the partial diallel cross (s=n/2) far outweighs the disadvantages attributed to it and it could be effectively used for screening a large number of parents for their gca effects, irrespective of the breeding system operating.

Item Type: Article
Author Affiliation: Cummings Laboratory, Division of Genetics, Indian Agricultural Research Institute, Delhi-12
Subjects: Postharvest Management > Food Technology
Crop Improvement
Divisions: General
Depositing User: Mr B Krishnamurthy
Date Deposited: 21 Mar 2012 14:45
Last Modified: 21 Mar 2012 14:53
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