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Título

Plant water status indicators for detecting water stress in pomegranate trees

Autor Galindo Egea, A. ; Rodríguez Hernández, Pedro; Ondoño, Sara ; Collado González, Jacinta ; Moriana, Alfonso; Cruz, Z. N.; Moreno Lucas, Félix ; Torrecillas Melendreras, Arturo
Fecha de publicación 12-may-2014
EditorUniversidad Politécnica de Cartagena
Citación Actas III Workshop en Investigación Agroalimentaria: -WiA3.14-. Cartagena: Universidad Politécnica de Cartagena, Servicio de Documentación, pag. 163-166 (2014)
ResumenMeasurements obtained by the continuous monitoring of trunk diameter fluctuations were compared with discrete measurements of midday stem water potential (PSIstem) 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 PSIstem ((T1/T0):coefficient of variation) and gl ((T0/T1):coefficient of variation). MDS increased in response to water stress, but when the PSIstem fell below ¿1.67 MPa, the MDS values decreased.
Descripción 4 páginas.-- 2 figuras.-- 1 tabla.-- 12 referencias.-- Las Actas se encuentran en el Repositorio Institucional de la la Universidad Politénica de Cartagena con el hanled http://hdl.handle.net/10317/4152
Versión del editorhttp://hdl.handle.net/10317/4152
URI http://hdl.handle.net/10261/122494
Identificadoresisbn: 978-84-697-1358-7
Aparece en las colecciones: (CEBAS) Comunicaciones congresos
(IRNAS) Comunicaciones congresos
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