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Histochemical and Ultrastructural Studies of Fruit Abscission in the Olive after Treatment with 2-Chloroethyl-tris-(2-methoxy ethoxy)-silane
1
Abstract
Following the application of 2-chloroethyl-tris-(2-methoxyethoxy)-silane (CGA 13586), an ethylenereleasing compound, to olive (Olea europaea L.) shoots, 2 abscission zones were observed. One occurred at the proximal, the other at the distal end of the pedicel. Actual separation occurred mostly at the distal end of the pedicel. Changes observed during the development of the abscission zone included: cell plasmolysis, cell wall and middle lamella dissolution, starch grain accumulation and a general breakdown of cells at the abscission zone.