FRESENIUS ENVIRONMENTAL BULLETIN, cilt.27, sa.12A, ss.9245-9257, 2018 (SCI-Expanded)
This paper describes the characterization of 124 landrace common bean genotypes (Phaseolus vulgaris L.) collected from the Western Mediterranean region of Turkey and the effectiveness of the morphologic characters in revealing genetic differences are explained. The results indicated that 16 (12.9%) of the genotypes have bush growth type, 108 (87.1%) of the genotypes have indeterminate growth type. The cumulative variation results show that the genetic variation among climbing genotypes is higher than bush genotypes. The first three eigen values explained 54% of the diversity among the bush genotypes, while clarified 39% of the diversity among the climbing genotypes. It was determined that the seed properties were the most effective characters in revealing the genetic diversity of common bean genotypes. Moreover, the results of the correlation analysis show that there is a relationship between seed size and 100 seed weight, among the earliness characters and among the seed color characters. It will be useful to consider the seed color in the earliness breeding researches. It is thought that the descriptors that should be prioritized in the characterization researches are the days to first flowering, %50 flowering date, 100 seed weights, grain color, grain main color, number of secondary color on grain, pigment formation and pod pigment flecks in order to reveal the genetic variation. On the other hand, to understand better the diversity of the genotypes, the data obtained were analysed by cluster analysis. The lowest genotype similarity ratios were found between ADY4-AGun25 (19.82%) and ADA3-AS3 (20.02%) genotypes collected from Antalya.