Research output: Contribution to Journal/Magazine › Journal article › peer-review
Partial root zone drying exerts different physiological responses on field-grown grapevine (Vitis vinifera cv. Monastrell) in comparison to regulated deficit irrigation. / Romero, Pascual; Perez-Perez, Juan Gabriel; del Amor, Francisco M. et al.
In: Functional Plant Biology, Vol. 41, No. 10-11, 03.04.2014, p. 1087-1106.Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Partial root zone drying exerts different physiological responses on field-grown grapevine (Vitis vinifera cv. Monastrell) in comparison to regulated deficit irrigation
AU - Romero, Pascual
AU - Perez-Perez, Juan Gabriel
AU - del Amor, Francisco M.
AU - Martinez-Cutillas, Adrian
AU - Dodd, Ian C.
AU - Botia, Pablo
PY - 2014/4/3
Y1 - 2014/4/3
N2 - Regulated deficit irrigation (RDI) and partial root zone irrigation (PRI) were compared for 4 years at two irrigation volumes (110 mm year(-1) (1) and 78 mm year(-1) (2)) in field-grown grafted Monastrell grapevines (Vitis vitifera L.) to distinguish the effects of deficit irrigation from specific PRI effects. PRI-1 and RDI-1 vines received similar to 30% of the crop evapotranspiration (ETc) from budburst to fruit set, 13-15% from fruit set to veraison and 20% from veraison to harvest. RDI-2 and PRI-2 vines received around 20% of ETc from budburst to fruit set, no irrigation from fruit set to veraison, and recovery (21-24% ETc) thereafter. Compared with RDI-1, PRI-1 increased irrigation depth and total soil water (theta(v)) availability in the root zone, and stimulated greater fine root growth and water uptake. Increased soil volume exploration supported greater canopy water use, vegetative development, biomass accumulation and internal water storage capacity. PRI-1 vines had higher stomatal conductance, lower leaf-level water use efficiency and increased leaf xylem sap concentration ([X-ABA](leaf)) following reirrigation. Compared with RDI-2, PRI-2 decreased total theta(v) availability, fine root growth and water uptake, gas exchange, leaf water status, [X-ABA](leaf), biomass accumulation and storage capacity. Xylem ABA decreased with total theta(v) availability in PRI-2, probably from limited sap flow when theta(v) in drying soil was low (approximate to 20%). For this rootstock-scion combination, high irrigation volumes applied to the wet part of the roots (theta(v) > 30%) are critical for increasing root-to-shoot ABA signalling and growth, and improving performance under semiarid conditions.
AB - Regulated deficit irrigation (RDI) and partial root zone irrigation (PRI) were compared for 4 years at two irrigation volumes (110 mm year(-1) (1) and 78 mm year(-1) (2)) in field-grown grafted Monastrell grapevines (Vitis vitifera L.) to distinguish the effects of deficit irrigation from specific PRI effects. PRI-1 and RDI-1 vines received similar to 30% of the crop evapotranspiration (ETc) from budburst to fruit set, 13-15% from fruit set to veraison and 20% from veraison to harvest. RDI-2 and PRI-2 vines received around 20% of ETc from budburst to fruit set, no irrigation from fruit set to veraison, and recovery (21-24% ETc) thereafter. Compared with RDI-1, PRI-1 increased irrigation depth and total soil water (theta(v)) availability in the root zone, and stimulated greater fine root growth and water uptake. Increased soil volume exploration supported greater canopy water use, vegetative development, biomass accumulation and internal water storage capacity. PRI-1 vines had higher stomatal conductance, lower leaf-level water use efficiency and increased leaf xylem sap concentration ([X-ABA](leaf)) following reirrigation. Compared with RDI-2, PRI-2 decreased total theta(v) availability, fine root growth and water uptake, gas exchange, leaf water status, [X-ABA](leaf), biomass accumulation and storage capacity. Xylem ABA decreased with total theta(v) availability in PRI-2, probably from limited sap flow when theta(v) in drying soil was low (approximate to 20%). For this rootstock-scion combination, high irrigation volumes applied to the wet part of the roots (theta(v) > 30%) are critical for increasing root-to-shoot ABA signalling and growth, and improving performance under semiarid conditions.
KW - abscisic acid
KW - plant biomass
KW - root and shoot growth regulation
KW - water stress physiology
KW - water uptake
KW - water use efficiency
KW - WATER-USE EFFICIENCY
KW - SOLANUM-TUBEROSUM L.
KW - ABSCISIC-ACID
KW - FRUIT-QUALITY
KW - SOIL-MOISTURE
KW - HYDRAULIC CONDUCTIVITY
KW - GAS-EXCHANGE
KW - SAP FLOW
KW - STOMATAL CONDUCTANCE
KW - ISOTOPE COMPOSITION
U2 - 10.1071/FP13276
DO - 10.1071/FP13276
M3 - Journal article
VL - 41
SP - 1087
EP - 1106
JO - Functional Plant Biology
JF - Functional Plant Biology
SN - 1445-4408
IS - 10-11
ER -