Abstract
SUMMARY (1) Valencia orange trees were subjected to water stress, under field conditions at Tacna, Arizona, inducing leaf water potentials between -1 and - 6.6 MPa before dawn. The water status of trees was then studied after irrigation. (2) Rehydration began immediately after irrigation, and leaf water potentials reached normal values in less than a week. (3) The stomatal conductance of leaves recovered much more slowly, the time being related directly to leaf water potential prior to irrigation. The stomatal conductance of trees which had leaf water potentials of less than -5 MPa before dawn, prior to irrigation, did not fully recover in 2 months. (4) Leaves that had undergone severe water stress had lower leaf water potentials, for a given relative water content, than unstressed leaves. These differences are discussed in terms of osmotic adjustment and changes in bound water.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
