GENETIC DIVERSITY ANALYSIS OF COTTON (Gossypium hirsutum L.) GENOTYPES USING ISSR MARKERS
Publication Date : 14/12/2014
Cotton (Gossypium hirsutum L. 2n=52, family: Malvaceae) is one of the most important commercial fiber and oil yielding crop in India. Genetic variability and relationships among fifteen cotton genotypes were investigated using nine ISSR primers. A total of 86 bands were obtained from nine ISSR primers, out of which 54 showed polymorphism of 62.79 % with an average six bands per primer. The PIC ranged from 0.8616 to 0.9090 and genetic similarity varied from 0.60 to 0.917. The cluster analysis revealed two main clusters with highest 66 % similarity percentage. Cluster I consisted of only one genotype GJHV-460, while cluster II consisted of rest of the genotypes grouped together in their respective subclusters. Large numbers of single type of markers could be screened for genetic diversity in cotton genotypes and utilized diverse genotypes in crop improvement programme to enhance crop productivity of cotton.
No. of Downloads :