Characterization of Salt Tolerance in Tomato Plant in Terms of Photosynthesis and Water Relations
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概要
- 論文の詳細を見る
Three commercial tomato cultivars (UC-97,Momotaro, and Edkawi) were subjected to a gradual increase of NaCl concentrations and the effect on biomass production and its parameters was compared. The data indicated that salinity reduced plant growth and the reduction was more pronounced in UC-97 and less in Edkawi. The apparent photosynthetic rate (P_0) was also depressed by the salt treatment and the depression was more remarkable in UC-97 and less in Edkawi. Edkawi shoot showed a much higher concentration of sodium ion and proline compared with the other cultivars, which may result in the maintenance of a higher turgor potential. In all the cultivars examined the stem diameter decreased after the beginning of exposure to light and recovered after the light was turned off. The decrease in the stem diameter during day light was enhanced and the recovery at night decreased after 1 d of salt treatment and the changes in the stem diameter were less conspicuous in Edkawi than in the other cultivars. These results suggest that Edkawi is more tolerant to salinity than the other cultivars due to a higher ability of maintaining the root function for the uptake and supply of water to shoot under salinity conditions but not due to the adjustment of transpiration from stomata.
- 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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Moghaieb Reda
Department Of Environmental Dynamics And Management Graduate School Of Biosphere Science Hiroshima U
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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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Ito Junki
Hiroshima Prefectural Agricultural Center
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Fujita Kounosuke
Department Of Environmental Dynamics And Management Graduate School Of Biosphere Science Hiroshima U
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