Growth of leek rust epidemics in time in three cultivars during the early stage of the epidemic

The growth of leek rust epidemics in time under favourable conditions in three leek cultivars during two years was analysed. In both years, the highest disease levels were found on cultivar Albana, followed by Carina and Cortina. A simple model is presented to correct the results for exchange of ino...

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Bibliographic Details
Published in:European journal of plant pathology 1995-03, Vol.101 (2), p.139-148
Main Author: Jong, P.D. de (Instituut voor Planteziektenkundig Onderzoek DLO, Wageningen (Netherlands))
Format: Article
Language:English
Subjects:
Agronomy. Soil science and plant productions
ALLIUM AMPELOPRASUM
Allium porrum
Biological and medical sciences
EPIDEMIA
EPIDEMICS
EPIDEMIE
Fundamental and applied biological sciences. Psychology
Genetics and breeding of economic plants
Instituut voor Plantenziektenkundig Onderzoek
MODELE
MODELOS
Pest resistance
Plant pathogens
PUCCINIA ALLII
Research Institute for Plant Protection
VARIEDADES
Varietal selection. Specialized plant breeding, plant breeding aims
VARIETE
VARIETIES
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Summary:The growth of leek rust epidemics in time under favourable conditions in three leek cultivars during two years was analysed. In both years, the highest disease levels were found on cultivar Albana, followed by Carina and Cortina. A simple model is presented to correct the results for exchange of inoculum between adjacent plots. The results of this model indicate, that the difference in rust infection between the cultivars may be due to a reduced growth of the epidemic in young plants of cultivars Cortina and Carina. In older plants, the ranking in susceptibility was reversed, causing a less pronounced difference in infection between the cultivars. The growth of leek rust epidemics during the early stage of the epidemic in isolated plots was satisfactorily described by an exponential model.
ISSN:0929-1873
1573-8469
DOI:10.1007/BF01874760