Abstract:The relationship between root, stem, and leaf hydraulic status and stomatal conductance during drought (Field capacities: 100-25%) and drought recovery was studied in Helianthus annuus, and five tree species (Populus x canadensis, Acer saccharum, A. saccharinum, Picea glauca, and Tsuga canadensis). Measurements of stomatal conductance (gs), organ water potential and vessel embolism were performed and the following was observed: 1. Cavitation only occurred in the petioles and not the roots or stems of tree spec… Show more
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