Vol. 7, Issue 7 (2018)

Author(s):
Muzamil A Hajam, SH Khan, Tariq A Bhat, EA Parray, Asif M Rather, MA Hajam, L Reyaz, Ishaq A Bhat and MA Wani

Abstract:
The investigation entitled “Genetic Variability and correlation coefficients studies in potato (Solanum tuberosum L.)” was carried out at vegetable experimental field SKUAST-K, Shalimar, Srinagar during 2016-2017 in which thirty eight genotypes of potato (Solanum tuberosum L.) were evaluated To estimate the phenotypic, genotypic variability, heritability (bs) and genetic advance of quantative characters for fifteen quantitative characters. Analysis of variance revealed significant differences among genotypes for almost all the traits studied. The maximum range was recorded for tuber yield per plant (219.55-505.17 g), followed by plant height (33.54 -76.10 cm), leaf area (56.16 - 88.91 cm^-2), plant spread (32.64 - 59.13 cm) and average tuber weight (45.61-65.81 g). The highest phenotypic and genotypic coefficients of variability were observed for tuber yield on per plot, hectare and plant basis followed by number of stems per hill, number of tubers per plant and plant height. In general the phenotypic coefficients of variation were slight higher than genotypic coefficients of variation for most of the yield contributing characters which indicates the minor role of environment in the expression of these traits. The estimates of heritability in broad sense was high for most of the characters indicating a great scope in the improvement of these traits as these characters in general possessed high estimates of heritability coupled with high genetic advance except for percent emergence days after planting, average tuber weight indicating preponderance of additive gene action for control of these traits.