Analysis of genetic diversity in Indian potato genotypes by using Principal Component Analysis
Abstract
Determination of the best selection criteria is the most important aim in potato breeding programs. In order to evaluate and classify morphological and morpho-physiological traits of potato genotypes, 30 cultivars were sown in randomized block design with three replications. Principal component analysis indicated that two important components accounted for about 84 percent of the total variation among traits in potato genotypes. The first component assigned 70 percent of total variation between traits and was significantly related with tuber yield and its components. Therefore, the selection should be done according to the first component and it will helpful for a good hybridization breeding program. Other component accounted for 13 percent of variation between traits. Based on the bi-plot figures Kufri Surya, Kufri Chipsona-3, PH-1, PH-3, MM-12, V1-121, Kufri Jyoti, Kufri Sutlej and V2-645 were identified as the best genotypes, therefore it can be stated that these cultivars were based on desired aims for exploitation in breeding programs.
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