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Ki Chang Hong(洪基昶),Sin Won Kang(姜信元) 한국육종학회 1970 한국육종학회지 Vol.2 No.1
大豆 放射線 育種의 한가지 基礎硏究로서 Gamma ray에 對한 感受性의 品種間 差에 對하여 試驗한 바 그 結果를 要約하면 다음과 같다. (1) Gamma ray 照射에 따라서 高線量에서는 發芽率이 大體로 抑制傾向을 보인 것이 많았다. Hill 만을 全線量(15~60kR)에서 發芽率이 增大되었다. (2) 全品種이 Gamma ray 照射에 依해 發芽期間이 延長되었으나 忠北白과 益山만은 低線量에서는 도리어 短縮되는 傾向을 表示하고 있다. (3) 上胚軸長은 全體的으로 減少 傾向을 보였으나 忠北白과 益山은 低線量에서는 도리어 增大傾向을 보였다. (4) 下胚軸長도 全體的으로 減少 傾向을 보였으나 Hill만은 全線量에서, 益山을 除한 全品種이 15kR에서 增大傾向을 보였다. (5) 葉面指數는 全品種이 全線量에 增大되었다. (6) 莖長은 益山과 Hill에서는 15~35kR 에서 增大되고 45kR 以上에서 減少되었으며 基他 品種은 全線量에서 減少되었다. (7) 葉長은 거의 全照射區에서 減少되었으나 金豆益山 및 Hill의 15 kR 增大되는 傾向이 있었다. (8) Gamma ray 照射에 依하여 12種類 以上의 畸型葉이 相當한 頻度로 出現하였다. (9) 初期부터 여러個의 側枝가 一齊히 發育하여 正常個體보다 生育이 極히 旺盛한 異常 個體도 發見되었다. In order to find out the varietal differences of radiation sensitivity in five soybean varieties, Chung-buk-baek, Yuk-u #3, Keum-du, lk-san, Chang-dan-baek-mok and Hill were treated with 15, 25, 35, 45, and 60 kR of gamma ray. The results gained are summarized as follows; (1) The germination percentage decreased with an increase of gamma ray dosage except the slight stimulation at lower doses in most of the varieties. But Hill was stimulated from all doses. (2) The length of time for germination was prolonged by the gamma ray irradiation in four varieties, while Chung-buk-back and Ik-san were shortened in low dose. (3) The length of epicotyl was reduced in four varieties, the other varieties, Chungbuk-baek and Ik-san were increased in lower doses. (4) The length of hypocotyl was reduced with increasing dosage in five varieties except Hill, which was increased with all doses, while all varieties, except Ik-san were increased at 15 kR. (5) The leaf index was increased proportionally to high dosage. (6) The length of stem was increased between 15 kR and 35 kR in Ik-san and Hill, but reduced in all doses in the other four varieties. (7) in general, the length of leaf was decreased from all doses, but it was increased at the 15 kR level in Keum-do, Ik-san and Hill. (8) More than twelve kinds of abnormal leaf types resulted from various dose levels. (9) More vigorous plants of a bushy type were found in the experiment.
On the mutant selection for three grain characters in rice
Ki Chang Hong(洪基昶),Hyok Ji Kwon(權赫之) 한국육종학회 1985 한국육종학회지 Vol.17 No.1
The application of CBB method allowed rapid and reproducible determination of rice protein content, but the protein quantity requires transformation according to their relationship to Kjeldahl determination. The sodium azide treated Toyonishiki#6 progenies allowed the selection of some protein mutants through the application of CBB method, and waxy type and phenol positive mutants. These mutants were recessive in their recovery nature.