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Proceedings of the International Plant Propagator's Society

Vol. 46

Title:
Cutting Propagation of Grafted Mature and Juvenile Northern Red Oak

Authors:
James J. Zaczek, K.C. Steiner and Charles W. Heuser Jr

pp: 595-600

Abstract:
A rooting trial evaluated the rooting success of cuttings from mature and juvenile, grafted and ungrafted northern red oak (NRO). Buds from seedlings and from 4 mature NRO trees were grafted onto juvenile and mature rootstock. Shoot cuttings were collected from the grafts and directly from seedling and mature trees and subjected to a rooting trial. Of all treatments, cuttings from juvenile material rooted best. However, the rooting of cuttings from mature trees was also relatively successful. Percentage rooting of cuttings was significantly related to ortet genotype and ontogeny and was not directly influenced by grafting. The number of roots per cutting and post-rooting flushing behavior was significantly related to ortet ontogeny. Juvenile rootstock had little effect on the rooting, number of roots per cutting, flushing behavior, and overwintering success of cuttings from mature NRO. Mature rootstock negatively influenced the number of roots per cutting, flushing behavior, and overwintering success of shoots from grafted juvenile buds.

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