Abstract:Phenotypic diversity of 103 Asiatic cotton (G. arboreum L.) accessions, which collected from India, Vietnam and Guizhou province, Guangxi Province and Yunnan province of China, was analyzed. Different genetic diversity indexes exist between qualitative and quantitative characters owing to the difference of cultivated geographic regions. The diversity indexes of 21 qualitative characters including stem, folium, floral and boll varied from 0.04 to 1.01 with an average of 0.57, as well as the 3 quantitative characters from 1.65 to 1.96 with an average of 1.82. These variations indicate that the genetic diversity of quantitative traits is more abundant than qualitative traits. The 103 Asiatic cotton accessions were clustered into 8 groups.