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- Title
Variation among Italian and French elm clones in their response toOphiostoma novo-ulmiinoculation.
- Authors
Santini, A.; Fagnani, A.; Ferrini, F.; Ghelardini, L.; Mittempergher, L.
- Abstract
In 1995 a clone bank of elms from across Italy was created at Antella (Florence, I) under a European Union project. In 1998 an experimental planting of some clones from this source was established in Antella together with material from a similar clone bank in France and two reference clones: Commelin (relatively susceptible) and Lobel (relatively resistant). In May 2001, the elms were inoculated withOphiostoma novo-ulmiand disease development was assessed throughout that summer and the next. Significant differences in susceptibility were found between taxonomic groups, with putative natural hybrids betweenUlmus minorandUlmus pumilabeing the most resistant andUlmus glabrathe most susceptible. Significant differences were also found withinU. minor, some clones being as resistant as Lobel. ForU. minor, a statistically significant relation was found with latitude, southerly clones showing less disease than more northerly ones. Relationships were also found between disease severity and times to bud burst, these relationships applying both to the different taxonomic groups and withinU. minor. Relationships between growth increment and disease severity were inconsistent. These results are discussed in relation to the intrinsic genetically-controlled differences that exist between elms and to differences in susceptibility that occur as the growing season proceeds and as a consequence of environmental influences.
- Subjects
ELM diseases &; pests; PLANT genetic engineering; OPHIOSTOMA; PATHOGENIC fungi; PLANT inoculation; GENETICS of disease susceptibility; PLANT diseases
- Publication
Forest Pathology, 2005, Vol 35, Issue 3, p183
- ISSN
1437-4781
- Publication type
Article
- DOI
10.1111/j.1439-0329.2005.00401.x