Lack of Correlation between Senescence and Stomatal Aperture in Lemna gibba G3

Stomata on the frond of Lemna gibba G3 were found to be non-functional;they remain open regardless of treatments that lead to eitherpromotion or inhibition of frond senescence. These findingsare not in accordance with the notion that leaf senescence isprimarily mediated through the stomatal behavior. ¹Present address: Department of Botany, North Carolina StateUniversity, Raleigh, North Carolina 27695, U.S.A. (Received July 13, 1989; Accepted May 8, 1990)