Evaluating correlation and factor analysis of morphological traits in potato cultivars in fall cultivation of Jiroft area.

摘要

In order to evaluate and classify morphological traits of Potato cultivars in fall cultivation of Jiroft area, 22 Potato cultivars and experiment in randomized complete block design with three replications, was done in Jiroft Agricultural Research Center. Correlation coefficient showed that tuber weight and harvest index have positive and significant correlation with tuber yield. Factor analysis based on principal component analysis method and varimax rotation indicated that three important factors accounted for about 80.05 percent of the total variation among traits. The first factor assigned 33.29 percent of total variation between traits and was significantly related with tuber yield. Therefore, this factor was regarded as tuber yield factor. Other factors accounted for 30.48 and 16.28 percent of variation between traits and were entitled as stolon length factor and negative factor for diagonal height, respectively.