ISHS Acta Horticulturae 508: XIX International Symposium on Improvement of Ornamental Plants
THE ACCLIMATIZATION AND SELECTION OF NEW ZEALAND PLANTS FOR ORNAMENTAL USE IN EUROPE |
| Authors: | W. Harris, A. Cadic, L. Decourtye |
| Keywords: | Cold resistance, Coprosma, Corokia, Hebe, Leptospermum, Plagianthus, Podocarpus |
| Abstract:
Evaluation of New Zealand plants at Beaucouzé, near Angers, France, has subjected them to rapid natural selection for cold tolerance by periodic episodes of atypically cold winters. Evaluations at other locations in France has also defined the usefulness of the species in milder coastal regions and revealed specific and intraspecific variation of tolerance of alkaline soils. Genotypes with attractive ornamental features have been selected from surviving plants within several of the species. These selections have the potential, both directly or as parents providing cold hardiness, to provide ornamentals and amenity plants that are able to more reliably persist outdoors in a greater area of Europe. Species of particular promise include Coprosma propinqua, Corokia cotoneaster, Melicytus alpina, Phormium cookianum, Plagianthus divaricatus and Podocarpus nivalis. | |
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