Determination of resistance to Fusarium oxysporum in Lilium

A screening test for determination of resistance to Fusarium oxysporum L sp. lilii in Lilium was developed. Under standardized conditions, 16 Asiatic lily cultivars were tested for resistance. Disease rating data were analyzed statistically using a threshold model for ordered categorical data. Bulb...

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Bibliographic Details
Published in:Phytopathology 1993-05, Vol.83 (5), p.568-572
Main Authors: Straathof, T.P, Jansen, J, Loffler, H.J.M
Format: Article
Language:English
Subjects:
AGENT PATHOGENE
Agronomy. Soil science and plant productions
Biological and medical sciences
BULBE
BULBO
Fundamental and applied biological sciences. Psychology
FUSARIUM OXYSPORUM
Genetics and breeding of economic plants
LILIUM
MATEMATICAS
MATHEMATIQUE
MEDICION
MESURE
MODELE MATHEMATIQUE
MODELOS MATEMATICOS
ORGANISMOS PATOGENOS
PESO
Pest resistance
Plant pathogens
POIDS
RESISTANCE AUX MALADIES
RESISTENCIA A LA ENFERMEDAD
VARIEDADES
Varietal selection. Specialized plant breeding, plant breeding aims
VARIETE
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Summary:A screening test for determination of resistance to Fusarium oxysporum L sp. lilii in Lilium was developed. Under standardized conditions, 16 Asiatic lily cultivars were tested for resistance. Disease rating data were analyzed statistically using a threshold model for ordered categorical data. Bulb weight measurements were modeled as weight change of plants cultivated in Fusarium-infested soil relative to weight change of control plants, and further analyzed by ANOVA. Results of both observations were highly correlated. For disease ratings, six categories provided more information than two or three categories. Variation in resistance among the cultivars was demonstrated. The threshold analysis with six categories showed at least four groups of cultivars that differed in resistance. Disease ratings provided reproducible results and a practical experimental design
ISSN:0031-949X
1943-7684
DOI:10.1094/Phyto-83-568