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KMID : 0613820020120030256
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Journal of Life Science
2002 Volume.12 No. 3 p.256 ~ p.263
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Hybrid Vigor and Reciprocal Effect of Several Growth and Yield Characters in F1s crossed between Hulled and Naked Barley
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Chung Young-Joo
Chung Young-Soo
Chung Won-Bok
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Abstract
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This study was carried out to estimate the degree of heterosis and heterobeltiosis, and the heritability and genetic correlation in F1 hybrid produced by reciprocal crosses between two six-rowed hulled barley (Gangbori and Olbori) and three six-rowed naked barley (Saechalssalbori, Saessalbori, and Moodeongssalbori). Heterosis was observed positively in traits such as culm length, spike length, awn length, leaf length, leaf width, number of spikes per plant, number of grains per spike, and 1000 grain weight. Heterosis and heterobeltiosis from the crosses with hulled barley as a maternal parent showed higher performance in culm length, leaf length, leaf width, number of spike per plant, number of grains per spike. The hulled grain characteristics is dominant over the naked one. The highest heritability was confirmed in leaf width with a value of 94.5% and overall high heritability was observed in most traits with the range from 76.7% to 94.5%. In an analysis of correlation coefficient, higher genetic correlations were observed between leaf length and number of spikes per plant(0.970), between culm length and number of grains per spike(0.963), and between awn length and leaf length(0.862) in the forward crosses in which hulled barley was maternal. In the reverse crosses, higher genetic correlation was observed between culm length and spike length(0.926), between awn length and leaf length(0.922), and between number of spikes per plant and number of grains per spike(0.713).
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KEYWORD
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barley, heterosis, heterobeltiosis, heritability, correlation
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