Fig. 4From: Variation, coordination, and trade-offs between needle structures and photosynthetic-related traits across five Picea species: consequences on plant growthRelationships between log (gm/gs) as well as log (Vcmax/gs) and iWUE and the relationship between log (gm/gs) and log (Vcmax/gs). gs, stomatal conductance; gm, mesophyll conductance to CO2; Vcmax and Jmax, maximum carboxylation and maximum electron transport rate, respectively. Points represent trait values for each individual of each species. Explained variance (R2) and P values are shown. Solid lines in each panel represents significant linear regressionBack to article page