Evaluating Diversity among Potato Cultivars Using Agro-Morphological and Yield Components in Fall Cultivation of Jiroft Area

摘要

Abstract: In order to evaluate and classify agro-morphological traits in 22 potato cultivars, an experiment based on randomized complete block design with three replications was carried out in Jiroft Agricultural Research Center, Iran. Principal components analysis showed that, three components explained 80.1% of the total variation among traits. The first PC assigned 38.3 percent and the second PC assigned 66.3 percent and of total variation between traits. The first PC was more related to yield, tuber weight, dry weight percent, harvest index and biological yield.Therefore, the selection was done according to the first component and it was helpful for a good hybridization breeding program. In order to group cultivars, cluster analysis performed using ward method. In grouping based on all the traits, 22 investigated cultivars were placed on two clusters that in this grouping sante, vergo and satina cultivars which in principal components analysis, were known as superior cultivars placed in one group. So, it can declare that analyzing the cluster confirms the results of principal components analysis, therefore it can be stated that these cultivars were based on desired aims exploitation in breeding programs