Biologia plantarum 34:431-437, 1992 | DOI: 10.1007/BF02923593
Apple tree water relations studied by means of the relative rate of water flow in the trunk xylem
- 1 Institute of Irrigated Horticulture of the Ukrainian Academy of Agricultural Sciences, Melitopol, Ukraine
The results of long-term investigations of variations of rates of water transport through the trunk xylem, its diameter, the leaf water potential and the transpiration rate of the apple tree showed that the daily rhythm of the relative rate of moisture flow in the trunk xylem is an obvious index of the state of the apple tree water exchange. This enables us to determine the period of its unbalance at intensive transpiration as well as the level of the forming water deficit with high accuracy and operativeness. Moreover, by the daily curve of the relative rate of xylem flow one can judge the role of contribution of the trunk reservoir to transpiration.
Received: October 17, 1990; Accepted: August 22, 1991; Published: September 1, 1992 Show citation
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