Indian Society of Genetics & Plant Breeding

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MAHALANOBIS GENERALIZED DISTANCE AND GENETIC DIVERSITY IN SORGHUM

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Eighty nine sorghum genotypes including 70 hybrids resulting from line (5) X tester (14)
mating and their 19 parents were classified using 0 2 statistic into nine clusters. A
comparison of the culturing pattern of parents vis-a-vis their hybrids, the magnitude of
heterosis in crosses involving parents in the same cluster with those in different clusters
and the 0 2 values between parents with heterosis exhibited in their cross combinations
revealed absence of any relationship between topological distance and genetic diversity.
0 2 statistic might be useful in discriminating materials having high divergence for the
factors important for fitness. However, under intense human selection the situation is too
complex for being handled by multivariate analysis alone.
 

Keywords: Sorghum, multivariate analysis, genetic diversity, heterosis, D2 statistic.

Info

Year: 1992
Volume: 52
Issue: 1
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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