abscission zone

American

noun

Botany.

the zone at the base of a leaf petiole, fruit stalk, or branch in which the abscission layer develops.

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abscission zone

“The restriction of ethylene’s destructive effects only to cells in the abscission zone illustrates the precise control plants exercise over their hormone systems,” Capon wrote.

From Seattle Times ● Dec. 2, 2022

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023