High Leaf Vein Density Promotes Leaf Gas Exchange by Enhancing Leaf Hydraulic Conductance in Oryza sativa L. Plants.

ABSTRACT: Six cultivated rice genotypes showing different stomatal conductance (g _s) values were used to investigate the influence of leaf vein traits on leaf gas exchange and leaf hydraulics. The results showed that g _s was the main determinant of the varietal difference in the net photosynthetic rate (P _N), whereas the area-based leaf nitrogen content (N_area) and mesophyll conductance (g _m) were not main factors. g _s and P _N were both positively correlated with leaf hydraulic conductance (K _leaf). A high density of leaf veins (vein length per leaf area, VLA), especially minor leaf veins (VLA_minor), was of benefit for improving the K _leaf

SUBMITTER: Ye M 

PROVIDER: S-EPMC8573028 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature