Cadmium Concentration in Grains of Japanese Wheat Cultivars : Genotypic Difference and Relationship with Agronomic Characteristics(Genetic Resources Evaluation)
スポンサーリンク
概要
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The contamination of cadmium (Cd) into the food chain can be harmful because Cd causes chronic health problems. To evaluate the breeding potential reducing the Cd concentration in wheat grain, we compared Cd concentrations in 237 wheat genotypes including Japanese landraces, Japanese cultivars and introduced alien cultivars for breeding using grain samples collected from upland fields in 2004-5 and 2005-6 growing seasons. The Cd concentration in wheat grain significantly varied with the growing seasons and with the experimental fields. Cultivars bred in northern Japan, including the recent Japanese leading cultivar 'Hokushin', tended to have a low Cd concentration in grain compared with that bred in central and southern Japan. Simple correlation analysis between Cd concentration in grain and agronomic characteristics revealed that the Cd concentration in grain showed significant negative correlations with stem number, culm length and spikelet number per spike, and showed significant positive correlation with SEAD value (chlorophyll content) of flag leaf. Stepwise multiple-regression analysis showed that the genotypic variation of Cd concentration in grain was associated with the culm length and spiklet number per spike. This study clarified the geographical pattern of genotypes with different Cd concentrations in grain in Japanese wheat cultivars. Cultivars originating from northern Japan may be useful genetic resources to develop cultivars with a low Cd concentration in grain to be grown in the areas where Cd accumulation in wheat grain is a problem.
著者
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KANEKO Satoshi
Food Biotechnology Division, National Food Research Institute
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Kaneko Satoshi
Food Biotechnology Div. National Food Res. Inst.
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Chono Makiko
Department Of Wheat And Barley Research National Institute Of Crop Science
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Chono Makiko
National Institute Of Crop Science (nics)
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Watanabe Y
Faculty Of Education Oita University
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Kaneko Satoshi
National Food Res. Inst.
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Kaneko S
Food Biotechnology Division National Food Research Institute
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Oyanagi Atsushi
National Institute Of Crop Science (nics)
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Oyanagi Atsushi
National Agricultural Research Center For Tohoku Region (narct):(present Address)national Institute
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Watanabe Yoshiaki
National Institute of Crop Science
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Kaneko Shigenobu
National Institute Of Crop Science (nics)
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Kaneko Shigenobu
National Agriculture Research Center
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Kaneko Satoshi
Food Biotechnology Division National Food Research Institute
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Seki Masako
National Institute Of Crop Science (nics)
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Kubo Katashi
National Institute Of Crop Science (nics):(present Office)national Agricultural Research Center For
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Watanabe Yuko
Faculty Of Agriculture Yamaguchi University
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Kubo Katashi
National Agricultural Res. Center For Kyushu Okinawa Region
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Kubo Katashi
National Agricultural Research Center For Kyushu Okinawa Region
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Matsunaka Hitoshi
National Institute of Crop Science (NICS)
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Fujita Masaya
National Institute of Crop Science (NICS)
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Fujita Masaya
National Agricultural Research Center For Kyushu Okinawa Region
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Watanabe Yoshio
National Agricultural Research Center (narc)
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Fujita Masaya
National Agricultural Res. Center For Kyushu Okinawa Region
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Watanabe Yoshiaki
National Agricultural Res. Center
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Chono Makiko
Naro Institute Of Crop Science
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Seki Masako
National Institute Of Crop Science
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MATSUNAKA Hitoshi
National Agricultural Research Center for the Western Region
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