Die induktion eines trenngewebes bei früchten von Prunus avium L. durch 2-Chloräthylphosphonsäure

TLDR: The application of 2,000 and 4,000 ppm CEPA in four sweet cherry varieties during maturation resulted in the formation of a complete abscission layer in the transition zone between pedicel and fruit.

Abstract: 2-Chloroethylphosphonic acid (CEPA) facilitates the separation of the fruit from the pedicel significantly. The application of 2,000 and 4,000 ppm CEPA in four sweet cherry varieties during maturation resulted in the formation of a complete abscission layer in the transition zone between pedicel and fruit. In contrast, in the untreated fruit no abscission layer was evident at maturity. The walls of the cells in the abscission layer contained less total polysaccharides than adjacent cells. Cellulose was partially broken down, and the pectins were degraded. The Ca and Mg content in the cell walls decreased. Thus the same histochemical changes are involved in natural and CEPA induced abscission.