To obtain a cell line of Vitis vinifera producing mainly malvidin-3-O-beta-
glucoside, three methods were studied: the initiation of new cell cultures
from different varieties, the modification of phytohormones in the culture
media of a high anthocyanin-producing cell line, and the selection by small
-aggregate cloning of new cell lines from this high producing strain. The l
atter technique gave a cell line accumulating a malvidin-3-O-beta-glucoside
proportion of 63%.