Variation and Correlation Studies on Some Adapted Genotypes of Potato (Solanum Tuberosum.L) in Kuru, Jos, Nigeria
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Abstract
Sixteen genotypes of potato (Solanum tuberosum L.) were grown during the rainy seasons of 2006 and 2007 in Kuru to estimate genetic variability and interrelationship between yield and some traits as well as heritability of some traits. The experiment was laid out in a randomized complete block design (RCBD) in three replications. Analysis of variance indicated that significant variation existed in all the traits studied. Tuber yield showed significant genotypic correlation with emergence count, plant height, internode length, days to maturity and number of tubers per plant. Tuber yield showed a significant negative genotypic association with vigor score and number of main stems per plant. It was found that there were highly significant positive correlations between tuber yield and vigor score, plant height, internode length and number of tubers per plant, indicating that improvement in any of these characters will lead to indirect improvement in tuber yield. The high negative values of correlation coefficients recorded between tuber yield and vigor score and tuber yield and number of stems per plant signify that selection for those traits would have effect in the opposite direction in respect of tuber yield in the crop.
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References
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