Interactions between French isolates of Phomopsis/Diaporthe helianthi Munt.-Cvet. et al. and sunflower (Helianthus annuus L.) genotypes

Three artificial infection tests measuring the rate of mycelial growth of 7 Phomopsis/Diaporthe helianthi isolates were used on leaves, stems and capitula of 6 sunflower hybrids. Isolates and hybrids were chosen to cover the range of variability and resistance levels known at the present time. Signi...

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Veröffentlicht in:	European journal of plant pathology 1999-10, Vol.105 (7), p.693-702
Hauptverfasser:	Viguie, A. (Station d'Amelioration des Plantes et de Pathologie Vegetale, INRA-GREAT, Clermont-Ferrand (France).), Vear, F, Tourvieille de Labrouhe, D
Format:	Artikel
Sprache:	eng
Schlagworte:	Biological and medical sciences DIAPORTHE HELIANTHI DISEASE RESISTANCE Fundamental and applied biological sciences. Psychology Fungal plant pathogens GENOTIPOS GENOTYPE Genotype & phenotype GENOTYPES Growth, nutrition, metabolism, transports, enzymes. Molecular biology HELIANTHUS ANNUUS HOST PATHOGEN RELATIONS Hybrids Microbiology Mycology PHOMOPSIS HELIANTHI Phomopsis/Diaporthe helianthi Phytopathology. Animal pests. Plant and forest protection Plant diseases Plant pathology Plant reproduction Plant resistance RELACIONES HUESPED PATOGENO RELATION HOTE PATHOGENE RESISTANCE AUX MALADIES RESISTENCIA A LA ENFERMEDAD Variation, races, biotypes, parasitic specialization, genetics
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Zusammenfassung:	Three artificial infection tests measuring the rate of mycelial growth of 7 Phomopsis/Diaporthe helianthi isolates were used on leaves, stems and capitula of 6 sunflower hybrids. Isolates and hybrids were chosen to cover the range of variability and resistance levels known at the present time. Significant genotype and isolate effects and isolate×genotype interactions were shown in all the tests, with some changes in order of hybrids according to the isolate used for infection. Consequences of interactions in breeding for stable resistance to P./D. helianthi are discussed.[PUBLICATION ABSTRACT]
ISSN:	0929-1873 1573-8469
DOI:	10.1023/A:1008715816205