The Indian Journal of Genetics and Plant Breeding
SCOPUSWeb of Science
  • Year: 2003
  • Volume: 63
  • Issue: 3

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

  • Author:
  • M. Vafaie-Tabar1, S. Chandrashekaran, R. P. Singh, M. K. Rana2
  • Total Page Count: 5
  • Page Number: 230 to 234

Division of Genetics, Indian Agricultural Research Institute, New Delhi 110 012.

1Present address: Cotton Research Institute, Varamin, Iran.

Abstract

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