| Autor: |
S. S. Klemsdal, Venche Talgø, Brita Toppe, Arne Stensvand, M. L. Herrero |
| Rok vydání: |
2007 |
| Předmět: |
|
| Zdroj: |
Plant Health Progress. 8 |
| ISSN: |
1535-1025 |
| DOI: |
10.1094/php-2007-0119-01-rs |
| Popis: |
In 2004, Phytophthora symptoms were observed on two different fir species used for Christmas trees in Norway. Isolations resulted in a Phytophthora sp. related to P. inundata from relatively newly established Nordmann fir (Abies nordmanniana) and P. megasperma from seven-year-old subalpine fir (A. lasiocarpa). The Nordmann fir plantation was more severely damaged, with approximately 70% of the trees dead or dying. In the field with subalpine fir, approximately 25% of the trees had yellow or brown foliage and stem canker. Pathogenicity was proven for both Phytophthora isolates on seedlings from their respective host plants. The massive infestation in the Nordmann fir plantation approximately one year after planting suggests that the pathogen was introduced into the planting with the transplants. Except for a recent report of P. cambivora on noble fir (A. procera) produced for bough production (17), Phytophthora has never been reported before on fir in Norway. Accepted for publication 2 October 2006. Published 19 January 2007. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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