Ecology, Environment and Conservation Paper

Vol. 21 Suppl.Issue August 2015; Page No.(219-222)

GENETIC VARIABILITY, INTER-RELATIONSHIP AND PATH ANALYSIS IN ONION (ALLIUM CEPA L.) GENOTYPES

B.S.K. Nikhil1, A.S. Jadhav, S.G. Bhalekar, M.N. Bhalekar and N.S. Kute

Abstract

Genetic variability, interrelationship and path coefficients were studied in onion involving 22 genotypes. Among nine traits studied highest GCV was observed for average bulb weight followed by yield and neck thickness. Heritability (broad sense) of the characters under study could be classified as high for plant height, days to maturity and average bulb weight. The genetic advance was found to be highest for average bulb weight followed by days to maturity. High heritability coupled with high genetic advance observed for days to maturity and average bulb weight. Yield was significantly and positively correlated with equatorial diameter followed by polar diameter, average bulb weight, TSS, and plant height. It could be inferred that, selection for high yield would be effective through selection for these traits. The path coefficient analysis revealed thatpolar diameter followed by average bulb weight and days to maturity had positive direct effect on yield. This indicates the true relationship of these traits and a direct selection through these traits will be effective.

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