The utility of covariance of combining ability in plant breeding

Arunachalam , V. (1976) The utility of covariance of combining ability in plant breeding Theoretical and Applied Genetics (TAG), 47 (6). pp. 303-306. ISSN 0040-5752

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Official URL: http://www.springerlink.com/content/l635j1671361t7...

Related URL: http://dx.doi.org/10.1007/BF00281936

Abstract

The definition of covariances of half- and full sibs, and hence that of variances of general and specific combining ability with regard to a quantitative character, is extended to take into account the respective covariances between a pair of characters. The interpretation of the dispersion and correlation matrices of general and specific combining ability is discussed by considering a set of single, three- and four-way crosses, made using diallel and line x tester mating systems in Pennisetum typhoides. The general implications of the concept of covariance of combining ability in plant breeding are discussed.

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