Indian Society of Genetics & Plant Breeding


Genetic improvement trend analysis for end-use quality characteristics among wheat cultivars of North-Western India

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To test the perception among consumers in India for
declining nutritional quality of wheat, the trends in enduse
quality characteristics of popular wheat cultivars of
North Western Plain Zone were studied. Fourteen mega
varieties released since 1900 were grown in randomized
block design over two years. ANOVA revealed no significant
differences for nitrogen percentage in grain as well as straw,
however, significant differences among the genotypes
within breeding period for kernel hardness, sedimentation
value and thousand kernel weights was observed. Linear
regression equation for thousand kernel weight indicated
a poor gain of 0.036g per year. However, the cubical
polynomial regression equation significantly improved the
association between kernel weight and year of release (R2 =
0.675). Similarly, cubical polynomial equation indicated
continuous decline for sedimentation value with indication
of some improvement in recent past. The present study
therefore, clearly establishes no perceptible loss in
nutritional quality. No trend was observed for flour recovery
over the years. The study establishes that breeders did not
deliberately modify any of the quality traits except grain
plumpness and perceived changes are either not true or
due to deterioration in production environment over years.
GGE biplot analysis grouped HD 2967, HDCSW 16, HD 3086
along with C 591 and identified HDCSW 16 as the most
ideal genotype for grain weight.

Keywords: Bread wheat, genetic gain, grain quality traits, breeding period, genotypes


Year: 2016
Volume: 76
Issue: 2
Article DOI: 10.5958/0975-6906.2016.00030.4
Print ISSN: 0019-5200
Online ISSN: 0975-6906


Rajbir Yadav info_circle
Kiran Gaikwad info_circle
Ashutosh Kushwah info_circle
Anju M. Singh info_circle
Naresh Kumar Bainsla info_circle

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