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Effect of ethephon on stomatal opening in detached epidermal strips of tobacco leaves nicotiana tabacum cultivar samsun



Effect of ethephon on stomatal opening in detached epidermal strips of tobacco leaves nicotiana tabacum cultivar samsun



Biologia Plantarum 24(4): 303-306



The effect of ethephon preparations upon stomatal openings in detached epidermal strips of tobacco leaves floated on 0.1 M KCl was measured microscopically after different times of exposure. Addition of 0.01 vol/vol % or 0.1 vol/vol % camposan, ethrel or E-BOH [ethephon/.beta.-hydroxy-ethylene hydrazine] resulted in the opening or closing of the stomata depending upon the time of exposure and the concentration of ethephon. Evidently, an increase in stomatal opening was induced by the acidity of the preparations and the released ethylene. Prolonged times of action resulted in decreased stomatal openings or in stomata being closed, respectively. High concentrations of ethephon also resulted in major damage being caused to guard cells after acting upon them for an extended period of time.

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Accession: 005237266

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Effect of ethephon on stomatal opening in detached epidermal strips of tobacco leaves (Nicotiana tabacum L. cv. Samsun). Biologia Plantarum 24(4): 303-306, 1982

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