Genetic Diversity and Correlation Between Different Traits of Common Bean (Phaseolus vulgaris L.) Genotypes in Normal and Limit Irrigation Conditions

In order to study genetic diversity and relationships between yield and some morphological traits, 648 common bean accessions were selected from the Gene Bank of Agricultural College, University of Tehran, Karaj, Iran. The accessions were planted in 2009 in the Augment Design without replication under normal and limit irrigation conditions. Traits such as days to 50% flowering, days to maturity, period of seed filling, number of seeds in pod, 100 seed weight and total yield were recorded during the growth period. The means and ranges of variation for the evaluated traits showed a high diversity among the genotypes. The results of correlation analysis showed that total yield had a positive correlation with studied traits in both normal and limit irrigation conditions. Factor analysis showed that three factors in normal and limit irrigation conditions, explained 72.57 and 73.37 percent of the total variance changes, respectively. Cluster analysis classified genotypes in to eight clusters in both conditions