Effect of GeO₂ Concentration on Hydroponically-Grown Lettuce (Lactuca sativa)
2005
Lee, G.P. (Chung-Ang University, Anseong, Republic of Korea) | Won, J.H. (Gangwon Agricultural Research and Extension Services, Chuncheon, Republic of Korea) | Park, K.W. (Korea University, Seoul, Republic of Korea) | Park, H.S. (Chung-Ang University, Anseong, Republic of Korea)
Various concentrations of germanium dioxide (GeO₂) was treated such as 1.0, 2.0, 4.0, 6.0, and 8.0 mgㆍL-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 mgㆍL-¹. In addition, Ge once taken by the root was hardly moved to the shoot. The plant showed the best growth at 4.0 mgㆍL-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.
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