Indian Society of Genetics & Plant Breeding

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THE USEFULNESS OF BIPARENTAL MATINGS AND GENO-PHENOTYPIC SELECTION FOR YIELD IMPROVEMENT IN WHEAT (TRITICUM AESTIVUM L.)

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Following the gena-phenotypic and phenotypic selection schemes (5% and 10%
intensities), the predicted and realized responses to first cyc.e of selection and the
predicted response to second cycle of selection exhibited greater improvement in
grain yield under biparentai matings than selfing. Further, the geno-phenotypic
selection resulted into greater response for yield improvement than phenotypic
selection under biparental matings as well as selfing. It clearly suggest that the
gena-phenotypic selection following intermating in F2 may be exercised to obtain
enhanced and continuous gains in grain yield in succeeding generations. Further,
an increase in grain yield was linked with increase in plant height, tiller number
and biologicai yield. These traits were also significantly and positively associated
with grain yield in all populations indicating that an index comprising these traits
may be used for selecting high yielding wheat genotypes of suitable height.
 

Keywords: Triticum aestivum L., Mating systems, selection schemes, selection response, selection efficiency, correlated response.

Info

Year: 1997
Volume: 57
Issue: 4
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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