VARIABILITY, HERITABILITY GENETIC ADVANCE, CORRELATION AND PATH ANALYSIS BETWEEN YIELD AND YIELD COMPONENTS IN POTATO (SOLANUM TUBERSUM L.)Patram Singh, P. K. Sharma, N.C. Banjara, Naresh P. Sahu and Ruchi Sharma
The experiment was conducted under All India Coordinated Research Project on Potato, Department of Horticulture, IGKV, Raipur, Chhattisgarh during 2013-14.The experiment was framed out under Randomized Complete Block Design with three replications. Genotypes included local potato collection and released varieties were utilized for the study was for the evaluations of fourteen characters were included variability, correlation coefficient and path analysis of potato. The range of variation was pronounced in most of the characters, which indicates that the characters were quantitative in nature and are under polygenic control. High estimates of coefficients of variability, heritability and genetic gain (GA %) were recorded for MTY,TY, DWS, NCL and FWS that these characters are largely controlled by additive gene action and that straight selection for them would be effective. Total tuber yield/ha had a significant positive correlation with MTY, FWT, NS, NT, PE (%) at genotypic and phenotypic level, But path coefficient analysis describes that MTY showed highest (1.583), NS (0.717), DWS (0.545), PH (0.499), NL (0.186), NT(0.095) were the reflection of significant positive correlation of these characters with total tuber yield t ha-1 could be considered as selection criteria in potato breeding program.
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