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J. K. Choi(崔震奎),K. Yamakawa(山川邦夫) 한국육종학회 1971 한국육종학회지 Vol.3 No.1
토마토의 種子 및 生體에 감마線을 處理한 R₂世代에서 花靑素突然變異의 出現率을 調査하였으며, 出現한 花靑素突然變異體의 因子型을 判明하였다. 卽 花靑素突然變異의 出現率은 生體處理가 種子處理보다 效果的이며, 因子型은 어느程度 品種의 遺傳的 背景에 依해 支配되는 것 같으며, OTS 10號의 ai 因子의 遺傳子座는 放射線에 對한 感受性이 敏感하여 突然變異되기 쉬운것 같다. The experiment was carried out to determine anthocyanin mutation frequency in γ-irradiated R₂generation of tomato seeds and young plants. And allele test was examined for anthocyanin mutants. Higher mutation frequencies were observed in irradiated young plants than dormant seeds. It was suggested that anthocyanin mutant’s genotypes varied with variety’s genetic backgrounds, and ai locus on Okitsu No. 10 was very sensitive to gamma ray.
放射線 및 化學藥品處理에 依한 토마토의 雄性不稔系 誘起選拔, 細胞學 및 遺傳學的 硏究
J. K. CHOI(崔震奎) 한국육종학회 1976 한국육종학회지 Vol.8 No.1
The object of this experiment was to test the radiosensitivity of the M₁ generation, and to determine the inheritance and morphological characteristics of the male-sterile mutants in tomatoes. The results obtained are as follows: Radiation damage varied with the water content of the seeds. The least damage occurred in the range of 11.34 to 14.29 percent moisture. Four tomato cultivars were gamma irradiated. The cultivar Sekai-ichi was the most sensitive while the other responded similarly to each other. Chemical mutagen treatments caused greater damage to germination, to delayed flowering and to pollen fertility than did radiation. Pollen fertility and seeds per fruit in seedling gamma irradiated plants decreased as the dosage and dose rate increased. Five male-sterile mutants were found. Each was controlled by a single recessive gene. All five male-steriles were nonallelic. Floral sizes of the male-sterile mutants were slightly smaller. Ovule fertility varied, usually being lower than normal type. Male sterility in 109-1ms strain was caused by unbalanced, insufficient nutrients being made available to the pollen-mother cells from the tapetal tissue.