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(National Taiwan University) (National Taiwan University) (National Taiwan University) (National Taiwan University)
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한국토양비료학회 한국토양비료학회 학술발표회 초록집 20th WORLD CONGRESS OF SOIL SCIENCE
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    초록·키워드

    Inorganic arsenic (As) is identified as a non-threshold, class 1 human carcinogen, and the intake of As through consuming rice grains may lead to the serious health effects. In order to selecting genotypes with low As contents in rice grains, this study investigates the effect of genotypes on the accumulation and speciation of As in rice grains grown in different level of As-contaminated paddy soils from Guandu Plain of northern Taiwan Three levels of As-contaminated Guandu Plain soils (16.3 (L), 343.3 (M) and 512.3 (H) mg As kg^-1) and six rice genotypes commonly planted in Taiwan, including three japonica and three indica genotypes, were used in this study. Rice seedlings were pre-cultivated in nutrient solutions for 2 weeks and then transplanted to As-contaminated soils for nearly 130 days until the grain mature. The biomass, root length, shoot height, and rice yields were measured. The concentrations of As (As species) in pore water and plant tissues were analyzed by high pressure liquid chromatography-inductively coupled plasma-mass spectrometry (HPLC-ICP-MS). Iron and dissolved organic carbon (DOC) in pore water were determined by ind ... 전체 초록 보기

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