Nitrogen Fixation of Sesbania rostrata : Contribution of Stem Nodules to Nitrogen Acquisition
スポンサーリンク
概要
- 論文の詳細を見る
Nitrogen contents, nodule numbers, and nodule dry weights of 6-week-old Sesbania rostrata plants grown in sand culture with only root nodules, only stem nodules or with both were compared and the root nodules were found to contribute to nitrogen acquisition more significantly than the stem nodules. Similar findings were obtained in ^<15>N_2-fixing experiments. An 8-week-old plant with both stem and root nodules fixed 1.50 mg nitrogen in a 12 h light period, while the fixation decreased to 1.15 mg nitrogen after the removal of the stem nodules, suggesting that root nodules played major role in nitrogen fixation. However, acetylene-reducing activities per nodule dry weight were higher in the stem nodules. Under flooding conditions, the aerenchyma tissues contributed to about 40% of N_2 transport to root nodules, and 60% was supplied through stem.
- 社団法人日本土壌肥料学会の論文
著者
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MATOH Toru
Plant Nutrition, Applied Life Sciences, Graduate School of Agriculture, Kyoto University
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Sekiya Jiro
Div. Appli. Life. Sci. Grad. Sch. Agr. Kyoto Univ.
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Sekiya J
Department Of Agricultural Sciences Faculty Of Agriculture Okayama University:(present Address) Depa
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Sekiya J
Okayama Univ. Okayama Jpn
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Sekiya Jiro
Div. Of Applied Life Sciences Graduate School Of Agriculture Kyoto Univ.
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Sekiya Jiro
Plant Nutrition Laboratory Department Of Agricultural Chemistry Faculty Of Agriculture Kyoto Univers
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Matoh Toru
Plant Nutrition Applied Life Sciences Graduate School Of Agriculture Kyoto University
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Saraswati Rasti
Plant Nutrition Laboratory, Faculty of Agriculture, Kyoto University
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Saraswati Rasti
Plant Nutrition Laboratory Faculty Of Agriculture Kyoto University
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Saraswati Rasti
Plant Nutrition Laboratory Department Of Agricultural Chemistry Faculty Of Agriculture Kyoto University
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