Het toetsen van stammen vanNectria cinnabarina (Tode) fr. op levende takken in vitro
Autor: | M. A. A. Schipper, H. M. Heybroek |
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Rok vydání: | 1957 |
Předmět: | |
Zdroj: | Tijdschrift Over Plantenziekten. 63:192-194 |
ISSN: | 1573-8469 0028-2944 |
DOI: | 10.1007/bf01987828 |
Popis: | Some types of elm hybrids resistent to the Dutch elm disease turned out to be susceptible toNectria cinnabarina(Tode) Fr. This fungus may behave as a parasite, killing branches. Virulent and non-virulent strains are known. A method is described for cultivatingNectria-strains in vitro on living desinfected branches ofAcer and ofUlmus. Three weeks after inoculation with a virulent strain the branches were killed. They were covered all over by a thick layer of mycelium. The mycelium of non-virulent strains could not kill the branches. It developed only sparsely. By this method it will be possible to select the most virulent strains out of a collection of isolates in order to use them for testing elm hybrids on their resistence toNectria cinnabarina. |
Databáze: | OpenAIRE |
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