| Effects and regulation of phosphorus on root hydraulic conductance in barley |
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| DOI：10.7606/j.issn.1000-7601.2005.01.15 |
| Key Words: phosphorus nutrient drought stress root hydraulic conductance (Lpr) |
| Author Name | Affiliation | | SHEN Yu-fang | College of Resource and Environment,Northwest Sci-Tech University of Agriculture and Forestry,Yangling,Shaanxi 712100,China；State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau,Institute of Soil and Water Conservation,Chinese Academy of Science and Ministry of Water Resource,Yangling,Shaanxi 712100,China | | QU Dong | College of Resource and Environment,Northwest Sci-Tech University of Agriculture and Forestry,Yangling,Shaanxi 712100,China | | WANG Bo-li | College of Life Science,Northwest Sci-Tech University of Agricultry and Forestry,Yangling,Shaanxi 712100,China |
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| Abstract: |
| At different phosphorus levels, pot experiments, in different irrigations (normal water supply, medium drought stress, drought stress), were carried out to determine the varieties of root hydraulic conductance (Lpr) of barley in a pressure chamber. The result showed that under different water conditions, the Lpr of non-phosphorus treatment was always strongly lower than that of P-treatment seedlings, and even under the condition of normal water supply the former was only 19% of the latter. It indicated that P could regulate the amount of AQP. Lpr of non-phosphorus treatment decreased more sharply with the intensifying of drought, and the recovering ability was significantly weaker than that of P-treatment seedlings during the course of irrigation, and it indicated that phosphorus played a very important role in improving the adaptability to drought and recovering ability of barley. |
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