Movement of Externally Applied Phenoxy Compounds in Bean Plants in Relation to Conditions Favoring Carbohydrate Translocation

Abstract

The translocation of the 2,4-D stimulus from kidney bean leaves was studied in relation to the type of phenoxy compounds used, the amt. applied, and the kind of carrier employed. 2,4-Dichlorophenoxyacetic acid, butyl 2,4-dichlorophenoxyacetate, n-octyl 2,4-dichlorophenoxyacetate, octa-decyl 2,4-dichlorophenoxyacetate, and butyl 2,4,5-trichlorophen-oxyacetate were apparently translocated most readily from the leaves to the stems under conditions which favored the translocation of photosynthate from the leaves, regardless of whether the growth-regulator was mixed with alcohol, kerosene, Varsol, or motor oil.