abscission layer


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Related to abscission layer: abscission zone

abscission layer

n
(Botany) a layer of parenchyma cells that is formed at the bases of fruits, flowers, and leaves before abscission. As the parenchyma disintegrates, the organ becomes separated from the plant
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The short shoots were firmly attached to the main shoot and, unlike normal gemmae, showed no evidence of an abscission layer above the proximal leaves.
This abscission layer is constructed so as to prevent the tree from "bleeding to death'' when the leaves detach from the tree.
These cells start to divide, forming the bottom part of what's called the abscission layer, the seam where the leaf eventually falls off from.
These specimens suggest that such relatively short branches were lost by shedding along a definite abscission layer.
Antlers are shed when a thin layer of tissue called the abscission layer disconnects the antler from the pedicle.