Genotypic Variations in Non-Structural Carbohydrate and Cell-Wall Components of the Stem in Rice, Sorghum, and Sugar Vane
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概要
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We evaluated genetic variations in the non-structural carbohydrate (NSC) and the cell-wall components of stem in rice, sorghum, and sugar cane to assess the potential suitability of these gramineous crops for bioethanol production. For NSC, the maximum soluble sugar concentration was highest in sugar cane, followed by sorghum with sucrose. The major NSC in rice was starch, but there were wide variations in the starch to soluble sugar ratios among the cultivars. The total concentration of cell-wall components was negatively correlated with the NSC concentration, indicating competition for carbon sources. Among the cell-wall components, lignin was relatively stable within each group. The major sugar species composing hemicellulose was xylose in all crop groups, but there were differences in composition, with a higher fraction of arabinose and glucose in rice as compared to the other crops. In rice, there was less lignin than in sorghum or sugar cane; this might be advantageous for the efficient saccharification of cellulose.
著者
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Takai Toshiyuki
National Institute of Agrobiological Sciences
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Maeda Hideo
National Agricultural Research Center for Western Region
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Nishitani Kazuhiko
Department Of Biology Facully Of Science Osaka City University
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Yoshinaga Satoshi
National Agricultural Research Center for Tohoku Region
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Ishimaru Tsutomu
National Institute of Crop Science
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Kondo Motohiko
National Agriculture Research Center
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Gau Mitsuru
National Agricultural Res. Center For The Kyushu-okinawa Region National Agriculture And Food Res. O
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Matsuoka Makoto
National Agricultural Research Center For Kyushu-okinawa Region
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ARAI-SANOH Yumiko
National Institute of Crop Science, National Agriculture and Food Research Organization
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IDA Masashi
Kumiai Chemical Industry Co., Ltd.
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ZHAO Rui
National Institute of Crop Science, National Agriculture and Food Research Organization
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TERASHIMA Yoshifumi
Japan International Research Center for Agricultural Sciences, Tropical Agriculture Research Front
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KATO Naoki
National Agricultural Research Center for the Kyushu-Okinawa Region, National Agriculture and Food R
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Matsuoka Makoto
National Agricultural Res. Center For The Kyushu-okinawa Region National Agriculture And Food Res. O
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Ida Masashi
Kumiai Chemical Ind. Co. Ltd.
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Kato Naoki
National Agricultural Res. Center For The Kyushu-okinawa Region National Agriculture And Food Res. O
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Zhao Rui
National Institute Of Crop Science National Agriculture And Food Research Organization
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