000			02448nab a22003737a 4500
999			_c61899 _d61891
001			61899
003			MX-TxCIM
005			20200522223935.0
008			180103s1972 xxk|||p|op||| 00| 0 eng d
022			_a0031-9317
022			_a1399-3054 (Online)
024	8		_ahttps://doi.org/10.1111/j.1399-3054.1972.tb03594.x
040			_aMX-TxCIM
041			_aeng
100	1		_913211 _aElfving, D.C.
245	1	0	_aInterpreting leaf water potential measurements with a model of the soil‐plant‐atmosphere continuum
260			_aUnited Kingdom : _bWiley, _c1972.
500			_aPeer review
520			_aA water flux model, which assumes that the dynamic functioning of the soil‐plant‐atmosphere continuum may be described by a series of steady states, was examined as a means for interpreting leaf water potential measurements in ‘Valencia’ orange trees (Citrus sinensis (L.) Osbeck). According to the model, leaf water potential should be related to transpirational flux, which in this experiment was estimated by the ratio of vapor pressure deficit of the atmosphere to leaf diffusion resistance (VPD/rleaf). Leaf water potentials decreased in a specific relationship with increasing values of VPD/rleaf provided that soil water was adequate and soil temperature was not too low, but regardless of season of the year or climatic or edaphic differences among 3 field locations. When soil water tensions exceeded 0.3 bar or when soil temperatures were lower than 15°C, deviations from the model occurred in the form of more negative leaf water potentials than predicted by VPD/rleaf. The model predicts from simple measurements made on intact plants that these differences were due to the modification of flow resistances by cool temperatures and the modification of both resistances and the potential of water at the source in the case of soil water depletion. The model may be a useful tool for interpreting plant water potential data under contrasting environmental conditions.
546			_aText in English
650		7	_913212 _aLeaf water potential _2AGROVOC
650		7	_94558 _aEnvironmental factors _2AGROVOC
650		7	_94859 _aModels _2AGROVOC
700	1		_913213 _aKaufmann, M.R.
700	1		_913214 _aHall, A.E.
773	0		_gv. 27, no. 2, p. 161-168 _tPhysiologia Plantarum _x0031-9317 _dUnited Kingdom : Wiley, 2008. _wu444664
942			_2ddc _cJA _n0