Indian Society of Genetics & Plant Breeding

Important

GENETIC ARCHITECTURE OF GOSSYPIUM ARBOREUM

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A set of nine generations, viz. PI, P:z, Ft, F:z, BCt, BC:z, F2 X PI, F2 X P:z, and F2 X FI, derived
from the cross G27 x H436 of G. arboreum L. was used to estimate the type of gene effects
for seed-cotton yield, fibre and other traits. The analysis of components of means indicated
prevalence of dominance gene effects for seed-callan yield, boll number per plant, and
plant height. Both additive and dominance gene effects were significant for boll weight,
ginning oUllum, seed index and halo length, whereas for lint index, additive component
was significant. For ginning outlum and seed index, the balancing of gene effects led to
predominance of additive gene effects. In addition, one or more of the digenic interaction
components were involved in the inheritance of all these characters except seed-cotton
yield. Interactions were mostly of duplicate type.
 

Keywords: Genetic architecture, generation means analysis, Gossypium arboreum, gene action.

Info

Year: 1992
Volume: 52
Issue: 3
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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