Gene effects controlling yield components in barley (Hordeum vulgare L.)
1999
Vimal, S.C. | Vishwakarma, S.R. (N.D. University of Agriculture and Technology, Kumarganj (India). Department of Plant Genetics and Plant Breeding)
Four crosses viz. NDB 940 by Ratna, NDB 90-1 by Jagrati, NDB 940 by RD 2516, and NDB 206 by BL-2 were made involving seven homozygous and genetically diverse genotypes of barley. P1, P2, F1, F2, B1 and B2 generations were grown during 1996/97 season in a compact family block design and data were recorded on days to ear per emergence, plant height, number of spikelets per main spike, number of grains per main spike and weight of grains per main spike. The genetic analysis using a six parameter model indicated that both additive and non-additive gene effects played an important role in the expression of these traits. In general, magnitude of dominance effect (h) has a greater value than additive effect (d) in all traits. Digenic interaction and epistasis indicate complex nature of inheritance. Thus improvement by selection in early generation could be advisable
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