Genetic Analysis of Quality, Yield and Yield Contributing Traits in Rice (Oryza sativa L.)
2015
Kasture, A. G. | Patel, V. P.
Three crosses viz., NVSR 303-6 x IET 22121, Lal kada x IRRIAMT 301 and Lal kada x IET 22121 were evaluated for gene effects for eleven characters viz., days to flowering, plant height, productive tillers per plant, panicle length, grains per panicle, grain yield, test weight, protein content, iron content, zinc content and crude fiber were studied using parental, F₁, F₂, BC₁ and BC₂ generations. The influence of epistasis was noticed in the majority of characters for all crosses. Most of the additive, dominance, additive x additive, additive x dominance and dominance x dominance effects were significant indicating the importance of the additive, dominance and epistatic modes of gene action in controlling these characters in rice. Only duplicate interaction was recorded for panicle length grain yield per plant and iron content in all three crosses under study whereas, other traits had more or less influence of both complementary and duplicate epistsis in different crosses. In general, both additive and non-additive gene action were important for the expression of almost all characters studied therefore, biparental mating followed by selection of desired recombinants from the segregating population is desirable for improvement rice quality along with high grain yield.
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