Gas exchange and water relations of three Vitis vinifera L. cultivars growing under Mediterranean climate

Title:

Gas exchange and water relations of three Vitis vinifera L. cultivars growing under Mediterranean climate

Creator:

Moutinho-Pereira, J., Magalhães, N., Gonçalves, B., Bacelar, E., Brito, M., and Correia, C.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:8bbe1be8-58ed-4822-950b-492d167498a1
uuid:8bbe1be8-58ed-4822-950b-492d167498a1
issn:0300-3604
doi:10.1007/s11099-007-0033-1

Subject:

carotenoids, chlorophyll, internal CO2 concentration, leaf water potential, net photosynthetic rate, optical characteristics, stomatal conductance, starch and sugars, transpiration rate, and water use efficiency

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

Optical characteristics, contents of photosynthetic pigments, total soluble sugars, and starch, rates of gas exchange, chlorophyll (Chl) a fluorescence, and leaf water relations were analysed in three Vitis vinifera L. cultivars, Tinto Cão (TC), Touriga Nacional (TN), and Tinta Roriz (TR), grown in Mediterranean climate. Chl content was significantly lower in TC than in TN and TR leaves, while the Chl a/b ratio was higher. TR had the lowest net photosynthetic rate, stomatal conductance, and contents of soluble sugars and starch than TN and TC. In spite of low Chl content, TC showed the lowest photon absorbance and the highest photochemical efficiency of photosystem 2. TC had the lowest predawn and midday leaf water potential. The capability for osmotic adjustment was similar among cultivars and the calculated modulus of elasticity was higher in TC leaves. The typical lighter green leaves of TC seemed to be an adaptive strategy to high irradiance and air temperature associated to water stress. and J. Moutinho-Pereira ... [et al.].

Language:

Multiple languages

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

202-207

Source:

Photosynthetica | 2007 Volume:45 | Number:2

Harvested from:

CDK

Metadata only:

false