炎光分光光度計による植物無機成分の研究：（第1報）種子発芽中に於る加里含量の変化について

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書誌事項

タイトル別名
  • Studies on the Minerals of Plants by Flame Spectrophotometer: Part.1 On the Change of Potassium Contents in Germinating Seeds
公開日
1956-04-20
資源種別
departmental bulletin paper
公開者
信州大学農学部

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説明

1. The potassium contained in turnip and radish seeds was investigated by the flame spectrophotometric method. 2. The average K_2O content contained in turnip seeds of middle size was 1.73%, and that in radish ones, 2.79%. 3. A remarkable change of K_2O content was found in the germinating seeds in the case of the turnip as well as of the radish. The first peak of K_2O content in the cotyledon was found immediately before the formation of root, and the second peak was followed by the development of the first leaf. (Fig. 2, Fig. 3) This tendency did not seem to vary by the addition of nitrogen and phosphoric acid. 4. The potassium in seed coats decreased gradually in proportion to the days elapsed after germination. 5. From the results above mentioned, the cotyledon seemed to be the depot for potassium during the first stage of growth of the turnip and the radish.

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