Ha. Quamme et Ej. Hogue, IMPROVED ROOTING OF OTTAWA 3 APPLE ROOTSTOCK BY SOFT WOOD CUTTINGS USING MICROPROPAGATED PLANTS AS A CUTTING SOURCE, Fruit varieties journal, 48(3), 1994, pp. 170-173
The rooting of Ottawa 3 apple rootstock by softwood cuttings under int
ermittent mist was improved by using a source of micropropagated plant
s (63%) in comparison to two conventionally propagated sources (47 and
42%). Softwood cuttings from the micropropagated plants also develope
d larger root masses than softwood cuttings from the conventional sour
ces. Basal cuttings rooted better than tip cuttings (71 vs. 23%).