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KMID : 0613820070170040493
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Journal of Life Science
2007 Volume.17 No. 4 p.493 ~ p.497
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Genetic analysis of seed characters in parents and F₁ hybrid of rice
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Chung Won-Bok
Oh Ju-Sung
Hwang Pil-Seong
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Abstract
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The study were performed genetic analysis for seed characters of 6 parents of rice cultivar and 15 F₁ hybrids. In terms of heritability, The highest value was observed in the character of No. of grains/spike. Second values was showed 1,000 grains weight and head rice ratio was high value than grain length and width. In an analysis of correlation relation of parent, significant positive coefficients were observed in head rice ratio and No. of grains/spike, grain length and 1,000 grains weight, but the negative coefficients were significantly revealed between grain length and No. of grains/spike. Phenotype coefficient was lowly observed in the relation of grain length and 1,000grains weight, grain width and 1,000 grain weight that highly positive genetic coefficient was showed in an analysis of correlation relation of F₁. In terms of heterosis, highest value was showed 1,000grains weight and second value was No. of grains per spike and 1,000grains weight and second value was No. of grains per spike in terms of heterobeltiosis. In an analysis heterosis of among crossing combination, high ratio was observed 1st combination at seed length, 12th combination at seed width, 3rd combination at head rice ratio, 5th combination at 1,000 grains weight and 11th combination at No. of grains per spike. In an analysis heterobeltiosis of among crossing combination, high ratio was observed 1st combination at seed length, 12th combination at seed width, 3rd combination at head rice ratio, th combination at 1,000 grains weight and 11th combination at No. of grains per spike.
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KEYWORD
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heritability, correlation, heterosis, heterobeltiosis
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