Methyl Jasmonate and transpiration in Barley

Abstract

Transpirational water loss from barley (Hordeum vulgare L. var Morrison) leaves was determined gravimetrically. In contrast to the known effects of other growth regulating compounds, it is shown that methyl jasmonate - used either as an airborne vapor or in the transpiration stream - is not acting as a primary short-term modulator of stomatal behavior in this species.