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This study aims to clarify the effect of microcystin on the germination, plant growth, absorption and accumulation of three kinds of aquatic plants― Konatsuna, cabbage, and morning glory by soil cultivation. The results indicated that germination and growth of, Konatsuna, cabbage, and morning glory were not inhibited by 1,000μg・l microcystin-LR added, suggesting there was no effect of germinate by direct sowing. It was also confirmed that microcystin-LR was accumulated in soil cultivation for morning glory. The microcystin-LR was not accumulated in komatsuna and cabbage soil cultivation due to the adsorption and degradation by the soil. When high microcystin-LR concentration was used (1,000μg・l), it was confirmed that microcystin-LR was accumulated in soil cultivation for water morning glory. From the risk assessment by estimation daily intake and tolerable daily intake of komatsuna, cabbage and water morning glory, it was clear that there was no influence on human being for eating crops irrigated the water containing microcystin-LR less than 1,000μg・l. Keyword: Microcystis aeruginosa, Microcystin, Brassica rapa var. perviridis, Brassica oleracea var. capitata, Ipomoea aquatica 16 日本水処理生物学会誌 第50巻 第 1号

nihon mizushori seibutsu gakkaishi

Effect of Blue-green Algae Toxin on the Growth of Komatsuna, Cabbage and Morning Groly in Soil Cultivation and Crops Absorption and Accumulation Characteristics