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- Title
Stimulation of Transpiration Rate in Barley Leaves by Kinetin and Gibberellic Acid.
- Authors
Livnè, Avinoam; Vaadia, Yoash
- Abstract
The rate of transpiration and extent of stomatal opening of detached barley leaves with their bases in kinetin solutions and water (control) were measured. Kinetin promotes transpiration rate of recently matured fully expanded leaves, hut not of young leaves, within 1-3 hours from time of application. Stomatal opening was also stimulated by kinetin. A typical dose response curve for the stimulation of transpiration was obtained with an optimum al 3 × 10-6 M kinetin. Gibberellic acid in concentration of 1.5 × 10-4 M also stimulates transpiration rates. Neither adenine (10-4 to 10-6 M) nor IAA (2 × 10-5 M) had any effect but actinomycin D (3.3 × 10-6 M) markedly reduced transpiration rates.
- Subjects
ANTINEOPLASTIC antibiotics; PLANT shoots; ADENINE; ANTIBIOTICS; ACTINOMYCIN; ACTINOMYCIN C
- Publication
Physiologia Plantarum, 1965, Vol 18, Issue 3, p658
- ISSN
0031-9317
- Publication type
Article
- DOI
10.1111/j.1399-3054.1965.tb06926.x