Indian Society of Genetics & Plant Breeding

Gene effects for oil content and other quantitative traits in soybean [Glycine max (L.) Merrill]

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Six parental lines Le., four cultivars and two promising
lines of soybean [Glycine max (L.) Merrill] were crossed
in four combinations to develop F1, F2 and F3 hybrid
progenies. Five generations viz., P1, P2, F1, F2 and F3
were grown in an experiment under compact family block
design to estimate the gene effects for oil content and
other quantitative traits. Additive and dominance gene
effects were important in determining inheritance of seed
oil content in all the four crosses. Complementary
epistasis was important for oil content in 'MACS 684' x
'RSC l' and in 'PK 472' x 'RSC 2'. Additive gene effects
also determined inheritance of, days to 50 % flowering,
days to maturity, plant height, clusters/plant, biomass and
harvest index. Dominance gene action was critical in
determining the yield and oil content. Duplicate epistasis
were significantly important in inheritance of plant height,
no. of branches per plant, clusters per plant, pods/plant,
no. of seeds per plant, plant biomass, 100 seed weight
and yield per plant.

Keywords: Soybean, gene effect, epistasis, inheritance


Year: 2002
Volume: 62
Issue: 4
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906



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