Indian Society of Genetics & Plant Breeding

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GENE EFFECTS FOR GRAINS PER SPIKE, GRAIN WEIGHT AND GRAINS PER SPIKELET IN A .sET OF NINETEEN CROSSES OF WHEAT

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Generation means analysis involving six basic generations of each of the 19 crosses
of wheat (Triticum aestivum L.) involving 20 genetically diverse parents was used
to elucidate the inheritance of grains per spike, grain weight and grains per spikelet.
The additive and additive x additive gene effects were significant in a great majority
of cases. However, the magnitude of additive gene effects was quite ~mall as
compared with other gene effects. The dominance and dominance x dominifnce gene
effects, though present in about one third of the crosses were of larger dtagnitude
but were unexploitable due to their opposite signs. The detection of both fixable
and non fixable gene action and of duplicate epistasis implies the use of biparental
approachlintermating in early segregating generations.
 

Keywords: Wheat, T. aestivum 1. gene effects, yield components, inheritance

Info

Year: 1998
Volume: 58
Issue: 1
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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