PJB-2023-149
Correlation and path analysis for tuber yield and processing quality traits of potato (Solanum tuberosum L.) genotypes at Holetta, central Ethiopia
Ebrahim Seid
Abstract
Potato is the third most important food crop in terms of consumption in the world after rice and wheat. This experiment was conducted at Holetta Agricultural Research Centre, Ethiopia during the main crop season of 2017. The experiment was laid out in randomized completed block design with three replications using 24 potato genotypes to determine the relation among tuber yield and processing quality traits of potato using correlation and path coefficient analysis. Strong positive and significant correlation were found between total tuber yield and marketable tuber yield (R=0.98) at both genotypic and phenotypic levels. Stronger positive correlations were found between tuber dry matter content and starch content (R= 1) and specific gravity (R= 1). Path analysis of tuber yield and its components shows that dry matter content and marketable tuber yield exerted positive highest direct influence on tuber yield. Specific gravity of tuber had high positive direct effect on dry matter content. So, to increase the performance of these traits for yield and processing improvement path analysis can be used.
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