Plant water status indicators for detecting water stress in pomegranate trees
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URI: http://hdl.handle.net/10317/10851ISBN: 978-84-697-1358-7
DOI: 10.31428/10317/10851
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Galindo Egea, Alejandro; Rodríguez, P.; Ondoño Tovar, Sara; Collado González, Jacinta; Moriana Elvira, Alfonso; [et al.]Área de conocimiento
Tecnología de los AlimentosPatrocinadores
This research was supported by CICYT/FEDER (AGL2010‐19201‐C04‐01AGR) and AECID (A1/035430/11) grants to the authors. AG, JCG and ZNC were funded by a FPU, a FPI and a AECID grant, respectively.Realizado en/con
Universidad Politécnica de CartagenaFecha de publicación
2014Editorial
Universidad Politécnica de CartagenaCita bibliográfica
Galindo Egea, A.; Rodríguez, P.; Ondoño Tovar, S.; Collado González, J.; Moriana Elvira, A.; Cruz, Z.N.; Moreno, F.; Torrecillas, A. Plant water status indicators for detecting water stress in pomegranate trees. En: III Workshop en Investigación Agroalimentaria: WiA3.14. Cartagena: Universidad Politécnica de Cartagena, Servicio de Documentación, 2014. Pp. 163-166. ISBN: 978-84-697-1358-7Palabras clave
WiAPlant water relations
Punica granatum
Trunk diameter fluctuations
Resumen
Measurements obtained by the continuous monitoring of trunk diameter fluctuations
were compared with discrete measurements of midday stem water potential (stem)
and midday leaf conductance (gl) in adult pomegranate trees (Punica granatum (L.) cv.
Mollar de Elche). Control plants (T0) were irrigated daily above their crop water
requirements in order to attain non‐limiting soil water conditions, while T1 plants
were subjected to water stress by depriving them of irrigation water for 34 days, after
which time irrigation was restored and plant recovery was studied for 7 days. T1 plants
showed a substantial degree of water stress, which developed slowly. Maximum daily
trunk shrinkage (MDS) was identified to be the most suitable plant‐based indicator for
irrigation scheduling in adult pomegranate trees, because its signal:noise
((T1/T0):coefficient of variation) ratio was higher than that for stem
((T1/T0):coefficient of variation) and gl ((T0/T1):coefficient of variation). ...
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