Indian Society of Genetics & Plant Breeding

Evaluation of genetic diversity in Indian tetraploid and diploid cotton (Gossypium spp.) by morphological characteristics and RAPDs

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Genetic diversity was evaluated among 7 diploid (G.
arboreum) and 15 tetraploid (G. hirsutum) cotton cultivars
using Random Amplified Polymorphic DNA (RAPD) and
morphological markers. RAPD markers were efficient and
detected 88% polymorphism. The diploid and tetraploid
cultivars could be divided into separate clusters at 30%
similarity with RAPD and 20% similarity with morphometric
markers. Classification of the cultivars based on the two
markers showed a high degree of agreement with a
correlation of (+) 0.90.Both markers revealed higher
diversity among diploids than among tetraploids.

Keywords: Cotlon, genetic diversity, RAPD, morphological characters


Year: 2003
Volume: 63
Issue: 3
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906



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