Study of genetic diversity and relationships among some diploid and tetraploid cotton genotypes of Iran using RAPD's Marker

Gossypium species (about 49 species) are vast resources of genetic diversity for improvement of cultivated cotton. To determine intra- and inter-specific genetic diversity and relationships, it was employed 30 RAPD's random decamer primers on twenty eight cotton accessions from 2 diploid cultivated species (G.arboreum, G.herbaceum) and 2 tetraploid cultivated species (G.hirsutum, G.barbadense). A total of 422 RAPD bands were amplified of which 88% (366) were polymorphic. Similarity indices estimated on the basis RAPD markers and cluster analysis based on similarity values showed high correspondence between RAPD marker system and known taxonomic relationships.