Genetic Evaluation for Yield and Its Components Traits in Potato (Solanum tuberosum L.) Under Eastern Uttar Pradesh Condition

The present investigation was conducted in Randomized Block Design with three replications at Main Experimental Station of Department of Vegetable Science, Narendra Deva University of Agriculture, Narendra Nagar (Kumarganj), Faizabad (U.P.) during rabi 2011 with the following objectives, to compute out phenotypic and genotypic coefficient of variation (PCV and GCV) and to estimate heritability in broad sense and genetic advances in per cent of mean. Experimental material for the present study consisted of thirty genotypes. Observation were recorded viz., plant height (cm), number of stems per hill, number of leaves per plant, number of tubers per hill, number of eyes per tuber, number of ‘A ’grade tubers per hill, weight of'A ’grade tubers per hill (above 75 gram), number of'B ’grade tubers per hill, weight of ‘B ’grade tubers per hill (above 51–75 gram), number of ‘C ’grade tubers per hill, weight of ‘C ’grade tubers per hill (25–50 gram), number of ‘D ’grade tubers per hill, weight of ‘D ’grade tubers per hill (below 25 gram) and yield of tubers per hill. Wide range of variability was observed for most of the characters under study. Analysis of variance for design of experiment indicated highly significant differences among genotypes for all the characters, based on mean performance of genotypes, the Kufri Shindhuri, RH-2, J/96–238 and 2001–55 were identified as most promising genotypes for yield of tubers per hill. The higher magnitude of coefficient of variation at phenotypic as well as genotypic levels observed for weight of ‘D ’grade tubers per hill (g), number of leaves per plant and number of ‘D ’grade tubers per hill. The high estimates of heritability were observed in number of ‘D ’grade tubers per hill and the highest genetic advance showed in yield of tubers per hill.