What is another word for root-stock?
Pronunciation: [ɹˈuːtstˈɒk] (IPA) 
The word "root-stock" refers to the base or foundation of a plant that is used for grafting and propagation purposes. Some synonyms for "root-stock" include "rhizome," "corms," "tuber," "bulb," and "stem cutting." A rhizome is a creeping rootstalk that produces shoots and roots. Bulbs are underground storage organs with swollen leaves, such as an onion or tulip. Corms are similar to bulbs but have a solid interior. Tubers are also underground storage organs, such as potatoes. Stem cuttings are pieces of the stem that can be rooted to create a new plant. All of these synonyms for "root-stock" play an important role in the cultivation and propagation of plants.
