Indian Society of Genetics & Plant Breeding

Effect of genotype and environment on quality traits and grain yield of wheat

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Field experiments with 20 bread wheat and durum varieties
of different origin were conducted in seven environments
during 2005-06. Data on 5 quality traits (grain protein
content, sedimentation value, test weight, thousand kernel
weight, and grain density) and grain yield per plot were
used to investigate the effects of G, E and G x E on
these traits. Highly significant differences were detected
among the environments and varieties for each of the
quality variable. Both variety (V) and environment (E) had
a significant effect on the quality traits and grain yield.
Significant V x E interaction indicated that quality trait
evaluation must be undertaken for different environments.
Highly significant positive correlation were observed for
grain density and yield per plot, thousand kernel weight
and yield per plot, grain density and thousand kernel
weight, grain density and test weight (kglhl), test weight
and thousand kernel weight. Significant negative
association was observed between grain protein content
and thousand kernel weight. High heritability (broad sense)
was observed for all the six traits under consideration
with a moderate genetic advance and moderate to high
genotypic and phenotypic coefficient of variation. These
findings suggests that quality parameters could be greatly
enhanced through genetic improvement for the targeted,
well characterized production environments.

Keywords: Spring wheat, grain quality, variety x environment interactions


Year: 2007
Volume: 67
Issue: 2
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906



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