Electric Conductivity,Na+ Content and Photosynthetic Activity in Leaves of Salt-Stressed Rice Plants,and Their Cultivaral Difference
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概要
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The electric conductivity of a leaf (LEC) was determined with an insulation resistance tester, and discussed its relationship with Na[+] content in a leaf (LNC) and the photosynthetic activity in salt-stressed rice cultivars. The measurements were carried out using three cultivars of O. sativa and O. glaberrima grown at the middle vegative growth stage. The plants showed a clear response to the salt treatment wothin 24 hours after its application. Both LEC and LNC in these cultivars increased with an increase in NaCl concentration in culture solution from 0 to 0.1 μmol L[-1]. LEC had a close linear relationship with LNC in each cultivar. A negative relationship was found between LEC and gross photosynthetic rate(Pg). The stomatal concuctance (Gs) and mesophyll conduntance (Gm) decreased with an increase in LNC. A clear cultivaral dofference was recognized in responces to salt treatments. LEC was regarded as a useful indicator for the estimation or diagnosis of LNC and photosynthetic activity in salt-stressed rice cultivars.
- 九州大学の論文
著者
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Araki Takuya
Laboratoy Of Plant Production Physiology Division Of Soil Science And Plant Production Deaprtment Of
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Kubota Fumitake
Laboratoy Of Plant Production Physiology Division Of Soil Science And Plant Production Deaprtment Of
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Kubota Fumitake
Laboratory Of Plant Production Physiology Division Of Soil Science Adn Plant Production Department O
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Mochizuki Toshihiro
Laboratory Of Agricultural Ecology Kyushu University
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Nakamura Michiyo
Laboratory of Plant Production Physiology,Division of Soil Science and Plant Production,Graduate Sch
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Nakamura Michiyo
Laboratory Of Plant Production Physiology Division Of Soil Science And Plant Production Graduate Sch
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Kubota Fumitake
Laboratory Of Plant Production Physiology Division Of Bioresource And Bioenvironmental Sciences Grad
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Mochizuki Toshihiro
Laboratoy Of Agricultural Ecology Division Of Agricultural Ecology Department Of Plant Resources Fac
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