Evaluation of distinctness, uniformity and stability of Cotton(Gossypium hirsutum L.and G. barbadense) common and new cultivars by using morphological characteristics

For distinctness, morphological characteristics uniformity and stability evaluation of cotton, a research based on completely randomized blocks design conducted by four replications. Varamin, Sahel, Bakhtegan, Mehr, Oltan, Dr. Omoomi, Sepid, Pak, Khordad, Sealand, Armaghan, Golestan cultivars and No.200 genotype thirty nine morphological characteristics of their measured. Petal colour and base colour spot intensity qualitative morphological characteristics divided cultivars into two groups, Dr. Omoomi grouped in one group and others grouped in other group. Based on pollen colour Bakhtegan and Sahel cultivars in one group and others in other group settled. Pubescences of stem and plant form separate those cultivars into distinct groups. Oltan,Varamin, Mehr, Pak, Sealand, Khordad, Sepid, Armaghan and Golestan cultivars based on flowering type divided into three distinct. Boll longitude cut form distinct Mehr, Pak, Sealand, Armaghan and Golestan cultivars into three groups and Pak, Sealand and Golestan cultivars in one group and Mehr and Armaghan each in one group. Based on stigma position to anthers Pak and Sealand cultivars in one group and Golestan in other group settled Also on the basis of toothed bracts and boll shallow holes Pak and Sealand distinct each another. Leaf shape separated Varamin, Khordad and Sepid cultivars into two groups and Varamin and Khordad cultivars in one group and Sepid cultivar settled in other group. Finally by stigma position to anthers characteristic separated Varamin and Khordad cultivars and all cultivars separate from each other.Therefore, studied cultivars and genotype by9 qualitative distinct morphological characteristics identifiable from each others.