Permeability of Apricot Leaf Cuticle

Abstract

Altlhoughl cutimize(d tissue in some forlmi is the first harrier to the entrv of chemicals into plants, dlirect measurements of the permeability properties of cuticular membranes are limited aandl qualitative (1, 5 ). Froml clirect miieasuremleints oin isolated cuiti- cle Skoss (9 ) has reported that Eniglish ivy leaf cuticle is relativelv illmpermleable to w ater, aandl that lemloni leaf cuticle is impermeable to the sodiunm salt of 2,4-dichlorophenoxyacetic acid, to the ammiioolniunm salt of dIinitro-o-sec-but lplleinol. andl to silver and chloriOle ionls. Similarly Orgell (7 ) hlas reported little, if any, penetration of isolated apricot leaf cuticle bv "polar solutes in a(queous solutioni, e.g. acids, bases, salts, (IN-es, and miniscellanieouis otlher conllpoullis.