abscission zone

abscission-zone的词性：
n.（名词）

1. The region at the base of a leaf, flower, fruit, or other plant part, where the formation of a cork layer results in the separation of that part from the plant body.
切除区，脱落区：植物体的叶子、花朵、果实或其他部位的底部区域，在此因栓皮层的形成而导致该部分脱离植物体