'n wingerdstok wat op maagdelike grond, vry van skadelike virusse, gevestig is. Moedereenhede word gevestig met plantmateriaal vanaf kern- of grondvesblokke.
English: mother unitnoun
Subject: Viticulture, Propagation
a vine established on virgin soil which must test free of harmful viruses. Mother units are established with plant material from nucleus or foundation units.