Changes induced by water stress on water relations, stomatal behaviour and morphology of table grapes (cv. Crimson Seedless) grown in pots

The response of different deficit irrigation strategies on physiological and morphological parameters on table grapes (cv. Crimson Seedless) grown in pots was studied three times a day to evaluate how such strategies could be safely used for hardening and to ascertain their tolerance to drought. Five precondi tioning treatments were applied:(i) CTL-1 and CTL-2; both irrigated daily to field capacity;(ii) DI, watered to 50% of CTL-1; (iii) PRDFIX, permanently watered to 50% of CTL-1 in a pot, and (iv) PRDALT, the root was split into two pots, and the pots alternatively watered to 50% of CTL-1 when the volumetric sub strate water content ( v) reached 12%. 30 days after the application of the preconditioning treatments, vines were subjected to drought for 7 days, except for CTL-1. After that, vines were re-irrigated and their recovery was studied for 7 days. Crimson Seedless displayed different responses to water stress, depend ing on the diurnal course. At predawn (t1) and early morning (t2), the cultivar showed near-anisohydric behaviour,through a less effective stomatal control of drought, whereas at midday (t3)the behaviour was near-isohydric. Although the total amount of irrigation water was the same for DI, PRDALT and PRDFIX, the vines from the last had a reduced photosynthetic activity, probably due to a limited sap flow. Water stress conditions induced avoidance mechanisms to drought such as stomatal closure, partial defoliation and a reduction in leaf insertion angle. Osmotic adjustment was only observed in un-preconditioned vines (CTL-2) but it was not enough to reach full turgor. In addition, PRDFIX and CTL-2 vines suffered serious dehydration damages to biomass accumulation and vine quality, regardless of the recovery of gas exchange parameters. PRDALT and DI can be used as safe techniques for irrigation scheduling in the nursery stage, because of their adaptability to water stress and so improve the survivability of the young table grapes plantations.

Datos y Recursos

Este conjunto de datos no tiene datos

Metadatos
Descargar
DCAT-AP/NTI-RISP

Información básica
Tipo de recurso Texto
Fecha de creación 17-09-2024
Fecha de última modificación 17-09-2024
Mostrar histórico de cambios
Identificador de los metadatos 17568a29-063d-5cbc-a873-9287ca674ff8
Idioma de los metadatos Español
Temáticas (NTI-RISP)
Categoría del conjunto de alto valor (HVD)
Categoría temática ISO 19115 biota
Identificador alternativo DOI 10.1016/j.scienta.2016.02.002
URI de palabras clave
Codificación UTF-8
Información espacial
Identificador INSPIRE ESPMITECOIEPNBMMENOR745
Temas INSPIRE
Identificador geográfico Murcia
Sistema de Referencia de Coordenadas
Tipo de representación espacial
Extensión espacial
"{\"type\": \"Polygon\", \"coordinates\": [[[-2.34, 37.38], [-0.69, 37.38], [-0.69, 38.76], [-2.34, 38.76], [-2.34, 37.38]]]}"
Resolución espacial del dataset (m)
Procedencia
Declaración de linaje
Perfil de Metadatos
Conformidad
Conjunto de datos de origen
Frecuencia de actualización
Fuentes
  1. Scientia Horticulturae
  2. vol 202
  3. 9-16
Propósito
Pasos del proceso
Cobertura temporal (Inicio)
Cobertura temporal (Fin)
Notas sobre la versión
Versión
Vigencia del conjunto de datos
Parte responsable
Nombre del autor Conesa, M.R., de La Rosa, J.M., Domingo, R., Bañón, S. y Pérez Pastor, A.
Nombre del mantenedor
Identificador del autor
Email del autor hector.conesa@upct.es
Web del autor
Identificador del mantenedor
Email del mantenedor
Web del mantenedor