rootstock

名词 rootstock:

1. a horizontal plant stem with shoots above and roots below serving as a reproductive structure
   同义词：rhizome, rootstalk
2. root or part of a root used for plant propagation; especially that part of a grafted plant that supplies the roots

root.stock

n.（名词）
See rhizome
参见 rhizome
A root or part of a root used as a stock for plant propagation.
根状茎，砧木：作为植物繁殖的根茎或砧木
A source or origin.
根源或起源