Indian Society of Genetics & Plant Breeding

Gene effects and interaction' analysis for forage yield and quantitative traits in genus Avena

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Six generations (P1, P2, F1, F2, 8 1 and 82) of six crosses
involving four diverse parents of oats viz., PLP 1, PLP
9. PO 22 and JHO 822 were evaluated for various yield
and morphological traits in a compact family randomized
block design with two replications at Palampur. The data
of six generations were subjected to scaling tests to
analyse genetic parameters m, d, h, i, j and I and to
detect epistasis. The predominant role of dominant genic
effects was observed for most of the traits studied in
one or the other cross. In some of the cases, both
dominance as well as additive genic effects were present.
Plant height at 50 % flowering showed mainly additive
genic effect in three of the six crosses. The type of
gene action was observed to be trait cross specific. PLP
1 x PLP 9 showed positive heterosis for fresh forage
yield and grain yield and the cross JHO 822 x P022
showed positive heterosis for fresh forage yield and dry
matter yield. Crosses PLP 1 x PLP 9 and JHO 822 x
PO 22 have been observed to be the potential crosses
for yield. The cross, PO 22 x PLP 9 can be utilized for
developing dual purpose types.

Keywords: Oats, generation means, gene action, yield traits, morphological traits


Year: 2003
Volume: 63
Issue: 3
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906



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