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Responses of five almond cultivars to irrigation: Photosynthesis and leaf water potential

Gomes-Laranjo, J. ; Coutinho, J.P. ; Galhano, V. ; Cordeiro, V.

Agricultural water management, 2006-06, Vol.83 (3), p.261-265 [Periódico revisado por pares]

Amsterdam: Elsevier B.V

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Título:
Responses of five almond cultivars to irrigation: Photosynthesis and leaf water potential
Autor: Gomes-Laranjo, J. ; Coutinho, J.P. ; Galhano, V. ; Cordeiro, V.
Assuntos: Adaptation to environment and cultivation conditions ; Agricultural and forest climatology and meteorology. Irrigation. Drainage ; Agronomy. Soil science and plant productions ; Almond ; almonds ; Biological and medical sciences ; cultivars ; Drought resistance ; drought tolerance ; Fundamental and applied biological sciences. Psychology ; General agronomy. Plant production ; Genetics and breeding of economic plants ; irrigation ; Irrigation. Drainage ; leaf water potential ; Photosynthesis ; physiological response ; Prunus dulcis ; Varietal selection. Specialized plant breeding, plant breeding aims ; varieties ; Water potential ; water stress
É parte de: Agricultural water management, 2006-06, Vol.83 (3), p.261-265
Notas: http://dx.doi.org/10.1016/j.agwat.2005.11.007
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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Descrição: In the Trás-os-Montes region, almond orchards are usually planted in the dry soils on the upper valley of the Douro river and are typically cultivated under non-irrigated conditions, leading to low yields. This study aimed to compare the physiological responses of five almond varieties (Francoli, Ferragnès, Glorieta, Lauranne and Masbovera) growing under non-irrigated and irrigated conditions. In irrigated conditions, all cultivars had higher photosynthetic rates, with maximum rates in a range of 10–12 μmol CO 2 m −2 s −1. Study of daily photosynthesis (June–August) indicates that, irrigated plants showed maximal values at 11 h (32 °C), while in water stressed ones highest values were found at 9 h (28 °C). The irrigation induced an increase in photosynthesis of around 173% in Lauranne, 187% in Francoli, 204% in Glorieta, 266% in Masbovera and 331% in Ferragnès. In relation to values of water potential that allow half-rate of photosynthesis ( ψ w50), they were calculated as −2.95, −2.50, −3.10, −3.20 and −3.30 MPa for Ferragnès, Glorieta, Masbovera, Francoli and Lauranne, respectively.
Editor: Amsterdam: Elsevier B.V
Idioma: Inglês

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Responses of five almond cultivars to irrigation: Photosynthesis and leaf water potential

Gomes-Laranjo, J. ; Coutinho, J.P. ; Galhano, V. ; Cordeiro, V.

Amsterdam: Elsevier B.V

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