Indian Journal of Genetics and Plant Breeding (The)
SCOPUSWeb of Science
  • Year: 1988
  • Volume: 48
  • Issue: 1

Secondary Association in Gossypium Herbaceum L and Gossypium Arboreum L

  • Author:
  • M. N. Gennur1, J. V. Goud1, S. N. Kadapa1, A. F. Habib1
  • Total Page Count: 4
  • Page Number: 5 to 8

1Department of Agricultural Botany, College of Agriculture, University of Agricultural Sciences, Dharwad, 580005

Abstract

Secondary association was studied in Old World cottons comprising 18 cultures of Gossypiom herbaceum and 13 of Gossypium arboreum. In G. herbaceum and G. arboreum, the frequency of bivalent associations 2(3)+3(2)+1(1) at MI was 33.3% and 32.7%, respectively. It is concluded that the basic chromosome number of the present Old World cottons was 6, and they are derivatives of secondary polyploidization of their ancestral types.

Keywords

Cotton, bivalent associations, chromosome number