ESTIMATING PARAMETERS OF VARIABILITY, ADAPTIVE VALUE AND SELECTION COEFFICIENT IN BREAD WHEAT (TRITICUM AESTIVUM L.) UNDER SALINITY AND DROUGHT STRESS CONDITIONS

Article Id: ARCC4416
Citation :- ESTIMATING PARAMETERS OF VARIABILITY, ADAPTIVE VALUE AND SELECTION COEFFICIENT IN BREAD WHEAT (TRITICUM AESTIVUM L.) UNDER SALINITY AND DROUGHT STRESS CONDITIONS.Agricultural Science Digest.2007.(27)
R.K. Kamboj
Address : Department of Plant Breeding and Genetics, SKN College of Agriculture, Jobner - 303 329, India

Abstract

Genetic variability, heritability and genetic advance were computed among 14 strains of wheat under drought stress conditions during rabi 2000-01. A similar set of strains was used to compute the viability, adaptive value and selection coefficient under drought and salinity stress conditions during rabi 2001-02. Heritability estimates were low to moderate except for grain yield/plant. For grain yield/plant high heritability estimate (75.85%) was associated with higher genetic advance (20.30%). In case of present population, selection based on grain yield/plant were more fruitful. The days to 75% flowering of a strain was not always correlated with its viability. The adaptive value of a strain was the function of a genotype and the environment in which it was grown.

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