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大豆幼軸伸長에 미치는 各種生長 調節物質과 石灰 및 加里의 生理的作用에 對하여

Physiological Activities Exerted by Various Growth Regulatiors, Ca and K ion on Elongation of Soybean Hypocotyl Segments

한국식물학회지 1968년 11권 1호 p.22 ~ 26
곽병화, 尹慶恩,
소속 상세정보
곽병화 (  ) - 고려대학교 농과대학 원예학과
尹慶恩 (  ) - 高麗大學校 農科大學 園藝學科

Abstract


Hrpocotyl segments of shade-grown soybean sprouts (var. Kumdo) were floated in solutions of various substances at physiological levels and grown for either 24 hours at 28℃ or 72 hours at 25℃.
Increased length of the segments beyond 20㎜ (the original length) was obtained as a measure of the present studies.
At the room temperature, Ca and DNP strong1y inhibited elongation of the hypocotyl segments, whereas K, IAA. GA and EDTA in general promoted it. There were, however, no such differences in the effects at relatively low temperature.
This indicated that the elongation process not only involves stretching of wall materials, but also does synthesis of the materials. Ca was found to be antagonistic to the promotive action of GA in the elongation, and the IAA action involves metabolic energy. EDTA seemed to act as a widely known chelator removing Ca already existed in the hypocotyl tissue, thus showed a promotion in the elongation.

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