ROOT TEMPERATURE EFFECT ON ROOT HYDRAULIC RESISTANCE IN CUCUMBER (CUCUMIS SATIVUS L.) AND FIGLEAF GOURD (CUCURBITA FICIFOLIA B.) PLANTS
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概要
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The effect of root temperature on total root resistance (hydraulic resistance in a whole root system) was examined in detached whole root systems of cucumber and figleaf gourd plants by applying the suction of 80kPa in root temperature region of 8 to 32℃. The total root resistances in both species became higher at lower root temperatures. From the fact that radial root resistance is about 80% of total root resistance, it could be conceivable that the temperature effect on the total root resistance is associated with the permiability in the root cell membrane in response to root temperatures. Furthermore, the species specificity was clearly found in significant difference (5% level) in total root resistance between two species: The total root resistance in the cucumber root system was higher than that in the figleaf gourd root system at 8℃.
- 九州大学の論文
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