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《Journal of Northwest Sci-Tech University of Agriculture and Forestry》 1989-03
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COMPARISONS OF THREE METHODS FOR DETERMING WATER POTENTIAL IN PLANT LEAVES

Jing Jiahai Wang Yugtio Sun Qun Wen Rong (Northwestern Agricultural University)  
When the dye method is used to determine water potential of corn leaves , it is not necessary to immerse corn leaf samples into the test solution for 30 min. When the pressure chamber a'nd the thermocouple psychrometer are used to determine water potential of wheat and corn leaves, the values of water potential are basically in agreement, but when they are used to determine water potential of cotton and popular leaves, the values of wheat potential are greatly different, when the dye method is used to determine water potential of corn leaves, its values are lower in the case of high water potential and higher in the case of low water potential than those determined by the thermocouple psychrometer. Alt-bough the values determined by three methods are not entirely the same, they vary with the leaf dehydration. Therefore, these methods can be used to determine the relative variations of values of leaf water potential under different conditions.
【Fund】: 国家自然料学基金
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【Citations】
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1 (Basic Courses Department,Northwestern Agricultural University,Yangling Shaanxi 712100);STUDIES ON WATER TRANSPORTS IN THE SOIL-PLANT-ATMOSPHERE CONTINUUM ON WEIBEI RAINFED HIGHLAND,SHAANXI PROVINCE──Ⅱ.EFFECTS OF ECOLOGICAL AND PHYSIOLOGICAL FACTORS ON PLANT LEAF WATER POTENTIAL[J];ACTA BOTANICA BOREALI-OCCIDENTALIA SINICA;1996-06
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