Indian Society of Genetics & Plant Breeding

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DIALLEL ANALYSIS IN BREAD WHEAT

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General and specific combining ability effects and variances for eight quantitative
characters were studied involving five parent diailel (excluding reciprocals). Both additive
and nonadditive genetic variances played important role in the inheritance of all the
characters studil:d. In view of this, selective diallel mating system may prove to be fruitful
in creating variability upon which effective selection for desirable characters could be
made. The additive genetic variance, which was larger in magnitude for grain yield and
other component characters except spike length, will be effective in getting transgressive
segregates. The predictability ratio was near unity and gca/sca ratio was more than one for
all the characters except spike length, suggesting greater importance of additive genetic
variance for these characters. Hence, pedigree selection will be suitable for yield
improvement in breadwheat. Kharchia 65 and CPAN 3013 are recommended for breeding
programme as they .expressed high positive and significant gca effects for grain yield and
are expected to give high yielding transgressive segregates.
 

Keywords: Combining ability, inheritance, breadwheat.

Info

Year: 1995
Volume: 55
Issue: 3
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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