J Integr Plant Biol. ›› 1975, Vol. 17 ›› Issue (1): -.

• Research Articles •    

Stimulation of Plant Exudation by Ethrel

Laboratory of Phytohormone, Shanghai Institute of Plant Physiology   

Abstract: 2-Chloroethylphosphonic acid was applied at 5%–10% to the trunks of five species from four different families of plants, Hevea brasiliensis, Pterocarpus indicus, My roxylon balsamum, Rhus sp., and Pinus massoniana. A markedly significant difference was found in the exudation between the treated and the untreated plants. No matter what the family of plants was tested, it is a general phenomenon that the amount of exudation was much increased by the 2-chloroethytphosphonic acid treatment. These results are discussed with regard to the possible role of 2-chloroethylphos-phonic acid on the stimulation of exudation which has been ascribed to be the response of wounding or other stresses by some authors.

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