Indian Society of Genetics & Plant Breeding
Inheritance of grain yield and tillers per plant in wheat
(Triticum aestivum L.) was studied from twelve
generations viz., both parents, Fl , F2, first backcross
generations (BC l arid BC2), second backcross
generations (BCll , BC12, BC2l and BC22) along with
BC
1S and BC2S derived by selfing of BCl and BC2
populations of two crosses involving four diverse
cultivars. Since the studies have been based on trigenic
model, therefore, the 10-parameter modal was
considered more adequate to explain the results
however, significant X2 values indicated even higher
order interactions. In cross UP 301 x HD 2009,
dominance and epistatic effects were found predominant
for both the traits while in the cross RS-31-1 x RAJ
1482 only epistatic effects were observed to be more
important-for these traits. To utilize non-fixable gene
effects (non-additive) which were higher in magnitude
than fixable (additive), breeding methods involving
reciprocal recurrent selection or biparental mating are
suggested for further improvement in grain yield and
tillers per plant in wheat
Keywords: Wheat, generation mean analysis, gene effects, grain yield, tillers per plant
Year: 2006
Volume: 66
Issue: 1
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906
U. S. Shekhawat, Vijay Prakash and R. P. Bhardwaj info_circle
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