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Title

Daily variations in water relations of apricot trees under different irrigation regimes

AuthorsRuiz Sánchez, M. Carmen CSIC ORCID; Domingo Miguel, Rafael; Pérez Pastor, Alejandro
KeywordsLeaf stomatal conductance
Leaf water potential
Net photosynthesis
Prunus armeniaca L.
Water deficit
Issue DateDec-2007
PublisherSpringer
CitationBiologia Plantarum 51(4): 735-740 (2007)
AbstractMature apricot (Prunus armeniaca L. cv. Búlida) trees, growing under field conditions, were submitted to two drip irrigation treatments: a control (T1), irrigated to 100 % of seasonal crop evapotranspiration (ETc), and a continuous deficit (T2), irrigated to 50 % of the control throughout the year. The behaviour of leaf water potential and its components, leaf conductance and net photosynthesis were studied at three different times during the growing season, when they revealed a diurnal and seasonal pattern in response to water stress, evaporative demand of the atmosphere and leaf age. The deficit-irrigated trees showed, among other effects, a pronounced decrease in leaf water potential (ψw), decreased in leaf conductance (gs) and no osmotic adjustment. For this reason, gl and ψw can be considered good indicators of mature apricot tree water status and can therefore be used for irrigation scheduling.
Publisher version (URL)http://dx.doi.org/10.1007/s10535-007-0150-5
URIhttp://hdl.handle.net/10261/16856
DOI10.1007/s10535-007-0150-5
ISSN0006-3134
E-ISSN1573-8264
Appears in Collections:(CEBAS) Artículos

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