2024-03-28T10:36:51Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/190012022-06-01T13:10:09Zcom_10261_53com_10261_6col_10261_306
00925njm 22002777a 4500
dc
Pozo, Alejandro del
author
Pérez Pérez, Pilar
author
Morcuende, Rosa
author
Alonso, Aitor
author
Martínez-Carrasco, Rafael
author
2005
The short and long-term responses of flag leaf stomatal conductance (gs) and rate of
photosynthesis (An) to elevated CO2 (757 μmol mol-1), 4 ºC warmer temperatures and N
supply were investigated in spring wheat (Triticum aestivum L. cv. Alcalá) crops grown in
two seasons in field conditions under temperature gradient tunnels, in a Mediterranean
environment. Plants grown at elevated CO2 had lower gs and An measured at 700 μmol
mol-1 CO2 than ambient CO2-grown plants, indicating acclimatory responses to elevated
CO2. N supply, which was lower in 2003 than 2002, reduced this acclimation in both years.
Warmer temperatures at high nitrogen supply also decreased An acclimation. Acclimatory
responses of An and gs were highly correlated. The analysis of the gs – An relationship
indicated that both parameters are probably linked and respond in parallel to elevated CO2
at ambient temperatures, but non-parallel responses were observed at above-ambient
temperatures.
Plant Science 169: 908–916 (2005)
0168-9452
10261/19001
10.1016/j.plantsci.2005.06.009
Acclimation
Elevated CO2
Elevated temperature
Gas exchange
Nitrogen
Photosynthetic capacity
Stomatal conductance
Acclimatory responses of stomatal conductance and photosynthesis to elevated CO2 and temperature in wheat crops grown at varying levels of N supply, in a Mediterranean environment.