Genotypic Variation in Shoot Cadmium Concentration in Rice and Soybean in Soils with Different Levels of Cadmium Contamination (Plant Nutrition)
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概要
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A pot experiment was conducted to investigate whether the shoot cadmium (Cd) concentration in 11 rice and 10 soybean cultivars varied among 4 soils with different levels of Cd contamination. Significant differences in shoot Cd concentration were found among rice or soybean cultivars grown in the 4 soils. The ranking of the rice cultivars for the shoot Cd concentration varied considerably among the soils. On the other hand, the soybean cultivars were ranked similarly in terms of shoot Cd concentration in the 4 soils. Significant and positive correlations were found between the Cd and Zn concentrations and between the Cd and Mn concentrations in the shoot of rice cultivars, when they were grown in 2 soils with relatively moderate levels of Cd contamination. The shoot Cd concentration in the soybean cultivars, however, was not correlated with the concentrations determined for any of the metals (Zn, Mn, Cu, and Fe) across the 4 soils. Significant and positive correlations between the concentrations of Cd in younger shoots and mature seeds were detected among the soybean cnltivars in 2 soils used, unlike among the rice cultivars, indicating that it may be difficult to evaluate the genotypic variation in seed Cd concentration using relatively younger shoots in the case of rice. These results revealed that genotypic differences in shoot Cd concentration in rice or soybean are variable or invariable among soils, respectively.
著者
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ISHIKAWA Satoru
National Institutes for Agro-Environmental Sciences
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ISHIKAWA SATORU
Department of Urology, Hitachi General Hospital
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Ishikawa Satoru
Department Of Environmental Chemistry Heavy Metal Group Soil Biochemistry Unit National Institute Fo
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Ae Noriharu
Department Of Biological And Environmental Sciences Faculty Of Agriculture Kobe University
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Arao Tomohito
National Inst. For Agro‐environmental Sci. Ibaraki Jpn
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MURAKAMI Masaharu
Department of Environmental Chemistry, Heavy Metal Group, Soil Biochemistry Unit, National Institute
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Sugiyama Megumi
Department of Environmental Chemistry, Heavy Metal Group, Soil Biochemistry Unit
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Arao Tomohito
Chemical Analysis Research Center, Environmental Chemicals Analysis Laboratory, National Institute f
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Murakami Masaharu
National Inst. For Agro‐environmental Sci. Ibaraki Jpn
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Sugiyama Megumi
Department Of Environmental Chemistry Heavy Metal Group Soil Biochemistry Unit
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Ishikawa Satoru
Department Of Applied Physics Graduate School Of Engineering Tohoku University
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MURAKAMI Masaharu
Department of Chemistry, Faculty of Science, The University of Tokyo
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