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자료유형
학술저널
저자정보
저널정보
한국원예학회 HORTICULTURE ENVIRONMENT and BIOTECHNOLOGY JOURNAL OF THE KOREAN SOCIETY FOR HORTICULTURAL SCIENCE Vol.46 No.2
발행연도
2005.4
수록면
113 - 118 (6page)

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Various concentrations of germanium dioxide (GeO₂) was treated such as 1.0, 2.0, 4.0, 6.0, and 8.0 ㎎ㆍL?¹ to lettuce (Lactuca sativa cv. Cheongchima) cultured in hydoponics for 4 weeks. Ge was linearly accumulated in the plants, primarily in the roots, as GeO₂ concentration in the nutrient solution increased from 1.0 to 8.0 ㎎ㆍL?¹. In addition, Ge once taken by the root was hardly moved to the shoot. The plant showed the best growth at 4.0 ㎎ㆍL?¹ GeO₂ for 7 days. In all ranges of the Ge treatment, the plant showed no phenotypic changes in leaf shape and color including necrosis or chlorosis, but the roots were stunted and thickened. The roots treated with GeO₂ at 6 or 8 ㎎ㆍL?¹ showed thickened cortex, but they had similar sizes of cells and vascular tissues. The leaf tissues treated with GeO₂ had denser mesophyll cells than the control. Interestingly, the Ge-treated leaf looked harder, more greenish, and more glossy than the control. With increasing GeO₂ concentration in the nutrient solution, the root activity was decreased, whereas lipid peroxidation increased.

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Abstract
Introduction
Materials and Methods
Results and Discussion
Literature Cited

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