Gas exchange and water relations of the root hemi-parasite Santalum album L. in association with legume and non-legume hosts

acacia arbre azote biological rhythms efficiency eficacia eucalyptus camaldulensis fixation de l'azote gas exchange host parasite relations intercambio de gases nitrogen nitrogen fixation nutrition des plantes photosynthese photosynthesis plant nutrition plant water relations relaciones planta agua relation plante eau rythme biologique santalum santalum album sesbania formosa transpiration trees uso del agua utilisation de l'eau water use