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/LD and SR/HD, respectively. The SR/HD resulted in 16% higher g S than DR/HD planting. Use of CRF 1 increased photosynthesis (17%), intercellular CO 2 (10%), g S (45%), and transpiration (46%) compared with CRF 2 ( Table 7 ); however, FAM application
significant increase in g S and intercellular CO 2 concentration ( C i ), implying that high g S was responsible for the increasing intercellular CO 2 concentration and net CO 2 assimilation rate by grafting. He et al. (2009) reported a significant
replicate plant using a portable photosynthesis system (LI-6200; LI-COR Inc.) with a 0.25-L cuvette. Photosynthetic water use efficiency (WUE = A CO2 E lf −1 ), g s , and intercellular CO 2 concentration (C i ) were calculated by the system. The
photosynthetic enzymes, such as carbonic anhydrase, fructose-1,6-bisphosphase, and ribulose 1,5-bisphosphate carboxylase/oxygenase ( Chen et al., 2008 ; Sasaki et al., 1998 ). In addition, Zn deficiency could also decrease the intercellular CO 2 concentration
parameters of pecan trees. Gas exchange parameters [(photosynthetic rate (µmol·m −2 ·s −1 ), intercellular CO 2 concentration (µmol·mol −1 ), vapor pressure deficit (kPa), transpiration (mmol·m −2 ·s −1 ), stomatal conductance (mol·m −2 ·s −1 ), leaf
with Ca solutions increased internal CO 2 and decreased O 2 levels in apple fruit ( Hewett and Thompson, 1992 ). The Ca solution presumably floods intercellular spaces beneath lenticels, which normally provide a major diffusion route for gas movements
velocity, and CO 2 concentration ( Kim et al., 1996a , 1996b ; Kitaya et al., 1998 ), thereby affecting the gas exchange of the plant community and its consequent growth ( Kitaya et al., 2000 , 2002 , 2004 ; Shibuya and Kozai, 1998 , 2001
, intercellular CO 2 (Ci) level dropped significantly. Ci levels differed significantly between plants treated with N treatments and control plants ( Fig. 4C ). Fig. 1. Effect of nutrient solution nitrogen (N) concentration on plant height (A), node number (B
, for 24 h at 20 °C (90% RH). The CO 2 target concentration was established by passing a stream of air containing 95% to 98% CO 2 through the containers. Fruit assessments. Firmness, soluble tannin content, and acetaldehyde concentration were analyzed
., 2006 ). Therefore, to conserve water, plants close their stomata. This simultaneously restricts the entry of CO 2 into the leaf, reducing photosynthesis. At higher concentrations, NaCl may also directly inhibit photosynthesis ( Stepien and Johnson