Indian Society of Genetics & Plant Breeding

SURVIVAL OF GENOTYPES IN A MIXTURE OF FOURTEEN SORGHUM VARIETIES

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THE ability to stand competition under stress of population is called the survival capacity
of a species. Competition among genotypes in a plant population is of interest not only
to the evolutionist but also to plant breeders since such studies would lead to an understanding of factors that determine the adaptability of certain genotypes over wide
habitats and elimination of others. Besides, in countries like India, where different
strains under distribution are likely to be mixed in cultivation, especially on threshing
grounds, lack of competitive ability in a strain could lead to its extinction. Competitive ability in artificial mixtures has been studied in wheat, barley and rice. Sorghums
in India are considered to be highly specific in their adaptation. Selection and
hybridisation have resulted in the evolution of numerous improved strains of diverse
habits and there appears to be no data on competitive ability in Sorghum nor on any
characters contributing to the survival under stress of competition. The survival
capacity of fourteen sorghum varieties was studied for one season of natural selection
and the results of these investigations are presented in this paper.
  

Info

Year: 1964
Volume: 24
Issue: 1
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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