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Indica×Japonica 交雜에 있어서 米粒의 Alkali 崩壞性의 遺傳
M. H. Heu(許文會),Z. R. Choe(崔震龍) 한국육종학회 1973 한국육종학회지 Vol.5 No.1
In order to investigate the inheritance of alkali digestibility of milled white rice in Indica x Japonica crosses, 2 Indica varieties (CP_(231)-SLO_(17) and BPI-76) and 4 Japonica varieties(Palkweng, Suwon 118, Norin 42, and Chianung 242) were crossed each other, and the milled white rice of parents, F₁s and F₂s were treated with 1.70% of potassium hydroxide solution at 30℃ for 18 hours long. The alkali digestibility of individual grains were numerically scored in accordance with a reading scale (Index) which divided into 7 grades. The results obtained were summarize das follows; 1) Low digestibility seemed to be dominant over high digestibility in Indica × Japonica crosses. 2) The distribution of alkali digestibility grade of F₂seeds in Indica × Japonica crosses were not continuous and segregated into 3 low and 1 high, and the results indicate that the alkali digestibility of milled white rice in Indica × Japonica crosses is controlled by a single gene. 3) The reciprocal effects of alkali digestibility was not detected both in F₁and F₂seeds.