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VARIABILITY AND HERITABILLTY STUDIES IN GROUNDNUT (ARACHIS HYPOGAEA L.)

Article Id: ARCC3671 | Page : 225 - 227
Citation :- VARIABILITY AND HERITABILLTY STUDIES IN GROUNDNUT (ARACHIS HYPOGAEA L.).Legume Research.2006.(29):225 - 227
K. John, R.P. Vasanthi and O. Venkateswarlu
Address : Regional Agricultural Research Station, Tirupati - 517502, A.P, India

Abstract

Groundnut is an important edible crop in India. In southern agro climatic zone of Andhra Pradesh, eastern mandals of Chittoor, adjoining areas of Nellore and Prakasam. Kalahasti malady, a soil borne nematode incited problem is serious during rabi season in groundnut. In the present study, three high yielding Spanish bunch varieties JL-24, TMV-2 and Narayani were used as ovule parents. Kalahasti malady resistant parents viz., Tirupati - 3 and Kalahasti (TCGS-320) were used as donor parents. Results indicated that PCV estimates were higher than those of GCV for all the characters studied indicating the influence of environment in varying degrees on all the characters. Heritability in broadsense estimates ranged from 21.39 per cent (shelling out-turn) to 76.03 per cent (number of secondary branches per plant). High heritability values were recorded for plant height, number of primary branches per plant, number of secondary branches per plant, number of immature pods per plant, pod width and kernel weight. Genetic advance as percentage of mean (GAM) was high for number of primary branches per plant, number of secondary branches per plant, number of immature pods per plant and pod width. High heritability coupled with high GAM for these characters is largely governed by additive gene action, which is highly amenable for visual selection.

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