Vol. 72 No: 2

Title:
Optimizing Root Cutting Success in Paulownia Spp.

Authors:
F.J. EDE, M. AUGER and T.G.A. GREEN

pp: 179-186

Abstract:
The use of root cuttings is standard nursery practice for the vegetative propagation of Paulownia plants. To investigate whether size or position in the original root system affected the ability to regenerate new tissues, cuttings were taken from P. tomentosa and P. fortunei plants. It was found that regenerative ability did not diminish with increasing distance (both horizontal and vertical) from the root collar. Regenerative ability was more closely coupled with cutting diameter as cuttings from both species that were 5 mm or less in diameter produced less shoot growth. New root development was not affected by cutting diameter. All the cuttings showed strong lateral polarity. It can be concluded that cuttings taken from any part of the root system of Paulownia have the capacity to regenerate new tissues, providing the cuttings are of a sufficient size.

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