Effect of Water Stress on Growth, Photosynthesis, and Photoassimilate Translocation in Soybean and Tropical Pasture Legume Siratro
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概要
- 論文の詳細を見る
Siratro (Macroptilium atropurpureum) and soybean (Glycine max) were grown in pots with or without irrigation for 3 weeks at the vegetative stage to examine the effect of water stress on plant biomass production, biological N_2 fixation, CO_2 assimilation rate, stomatal conductance, leaf water potential, and the partition of ^<14>CO_2 to plant parts. Biomass production decreased by water stress and the decrease was less conspicuous in siratro, mainly due to the maintenance of a relatively higher growth rate in stem plus petioles and roots. Siratro maintained a higher stomatal conductance and CO_2 assimilation rate at a lower leaf water potential compared to soybean. Water stress decreased the biological N_2 fixation in both species, and the decrease was more appreciable in siratro than in soybean under stress conditions. Water stress affected the export of photoassimilates from leaves in both species. The translocation of ^<14>CO_2 photoassimilates to nodules and roots was less substantial in siratro than in soybean under water stress conditions. Translocation of photoassimilates from leaves to stem plus petioles in siratro enables the maintenance of growth of stem and petioles under water stress conditions.
- 社団法人日本土壌肥料学会の論文
著者
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Saneoka Hirofumi
Department Of Environmental Dynamics And Management Graduate School Of Biosphere Science Hiroshima U
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Saneoka Hirofumi
Department Of Environmental Dynamics And Management Graduate School Of Biosphere Sciences Hiroshima
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Saneoka Hirofumi
Graduate School Of Biosphere Sci. Hiroshima Univ. 1-4-4 Kagamiyama Higashi-hiroshima 739-8528 Jpn
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Fujita K
Department Of Environmental Dynamics And Management Graduate School Of Biosphere Science Hiroshima U
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Fujita K
Graduate School Of Biosphere Science Hiroshima University
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Fujita K
Department Of Environmental Dynamics And Management Graduate School Of Biosphere Sciences Hiroshima
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Fujita Kounosuke
Department of Environmental Dynamics and Management, Graduate School of Biosphere Sciences, Hiroshim
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Ohashi Yoshiyuki
Department of Environmental Dynamics and Management, Graduate School of Biosphere Science, Hiroshima
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Fujita Kounosuke
Department Of Environmental Dynamics And Management Graduate School Of Biosphere Science Hiroshima U
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Ohashi Yoshiyuki
Department Of Environmental Dynamics And Management Graduate School Of Biosphere Science Hiroshima U
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Ohashi Yoshiyuki
Department of Applied Chemistry, College of Engineering, University of Osaka Prefecture
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