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Diallel Analysis Study of Yield and Yield-Related Traits in Rice Genotypes |
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N. Bagheri,
N.B. Jelodar and A. Ghanbari |
Abstract:
In a diallel cross rice involving five varieties (Dailamani,
Sange-tarom, Hasani, Shastak-Mohammadi and Daei-shastak), combining ability
and gene action for yield and yield-related traits were estimated. The
study indicated that both general and specific combining ability effects
were significant and important for the more traits, except for primary
branching of panicles and paddy width traits. This indicates the role
of additive and non-additive gene effects in inheritance of the traits.
Variances due to GCA were greater than those due to SCA for plant height,
flag leaf width, primary and secondary branching of panicles and filled
grain per panicle traits, suggesting the role of additive gene effects
were predominant in inheritance of the traits. These characters have high
heritability and selection for them may well succeed. But, low heritability
of tiller number, flag leaf length, days to maturity, panicle length,
paddy length and width, 1000-grain weight and grain yield characters,
were because of a high amount of non-additive variance in the genetic
variance. Thus these characters were important for production of hybrid
variety and exploitation of heterosis. The GCA effects of each parent
for these traits showed that the Shastak-Mohammadi and Daei-shastak are
good general combiner for days to maturity and grain yield, respectively.
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How to cite this article:
N. Bagheri, N.B. Jelodar and A. Ghanbari, 2008. Diallel Analysis Study of Yield and Yield-Related Traits in Rice Genotypes. International Journal of Agricultural Research, 3: 386-396.
DOI: 10.3923/ijar.2008.386.396
URL: https://scialert.net/abstract/?doi=ijar.2008.386.396
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