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Plant and Cell Physiology, 1978, Vol. 19, No. 7 1311-1313
© 1978

Short communication

Changes in stomatal movements in isolated epidermal strips of a CAM plant, Notonia grandiflora DC

A. Ramachandra Reddy and V. S. R. Das

Department of Botany, Sri Venkateswara University Tirupati (A. P.) 517 502, India

The diuranl rhythm of the stomatal aperture size was investigated using isolated epidermal strips from a CAM plant, Notonia grandiflora. Maximal stomatal opening occurred at pH 6.5. The nocturnal stomatal opening was stimulated by KCl which produced stomatal closure in light. The stimulatory effect of KCl on stomatal opening in drakness was suppressed by ABA.

(Received January 24, 1978; )
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