Indian Society of Genetics & Plant Breeding

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ESTIMATION OF VARIABILITY PARAMETERS AND PATH COEFFICIENTS FOR CERTAIN METRIC TRAITS IN WINTER WHEAT (TRITICUM AESTIVUM L. EM. THELL.)

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Phenotypic and genotypic coefficients of variation (pev, GCV), heritability, genetic
advance (GA) and path coefficients for 12 characters were estimated in 50 genotypes of
winter wheat (Triticum aestivum). High estimates of PCV, GCV, heritability and GA
indicated scope for improvement through simple selection for grain weight/spike, grain
yield/plant, grains/spike, lOOO-grain weight, biological yield/plant, harvest index,
tillers/plant, spikes/plant, and plant height. However, there was little variability and scope
for selection in the material for days to flowering and maturity and spikelets/spike. Path
analysis further indicated the importance of biological yield/plant, harvest index and grain
weight/spike, as these characters showed highest direct effects on grain yield. Winter wheat
genotypes, viz., Tufilar, NS 879/4, Bolal, Opal and Kavkaz were identified as good
combiners for grain yield and other desirable characters.
 

Keywords: Winter wheat, variability, path coefficient.

Info

Year: 1995
Volume: 55
Issue: 4
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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