Correlation and Path Analysis Between Yield and Yield Components in Potato (Solanum tubersum L.)

Abstract

This experiment was conducted at Ardabil, Iran region during the rabbi crop season of 2008-2009 in a randomized complete Block with three replications using with ten genotypes to the relations among tuber yield and some traits of potato using correlation and path coefficient analysis. Stronger positive and significant correlations were found between starch content and dry matter content (R=1). Stronger positive correlations were found between tuber yield and main stems/plant (r= 0.925), plant tuber weight (r=0.992), plant height (r=0.843). Compared to the simple correlation analysis, path analysis of tuber yield and its traits demonstrated that plant height, medium tuber weight and big tuber weight evolved the highest direct influence, 2.19, 0.867 and 0.656, respectively. So, to increase the performance of these traits path analysis can be used.