Variation in response of wild Lycopersicon and Solanum spp. against tomato powdery mildew (Oidium lycopersici)

A set of 154 accessions of nine wild Lycopersicon spp. and five accessions of three closely related Solanum spp. were tested for resistance to tomato powdery mildew (Oidium lycopersici). Screening revealed valuable sources of resistance, mainly among L. hirsutum, L. pennellii, L. cheesmanii, L. chil...

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Bibliographic Details
Published in:Journal of phytopathology 2000-05, Vol.148 (5), p.303-311
Main Authors: Mieslerova, B, Lebeda, A, Chetelat, R.T
Format: Article
Language:English
Subjects:
Agronomy. Soil science and plant productions
Biological and medical sciences
disease resistance
Fundamental and applied biological sciences. Psychology
fungal diseases of plants
gene centers
Genetics and breeding of economic plants
germplasm
germplasm evaluation
Lycopersicon solanum
Lycopersicon spp
Oidium
Oidium lycopersici
Pest resistance
plant genetic resources
Plant pathogens
resistance
screening
Solanum
species differences
taxonomic relationships
tomato
Varietal selection. Specialized plant breeding, plant breeding aims
wild progenitors
wild relatives
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Summary:A set of 154 accessions of nine wild Lycopersicon spp. and five accessions of three closely related Solanum spp. were tested for resistance to tomato powdery mildew (Oidium lycopersici). Screening revealed valuable sources of resistance, mainly among L. hirsutum, L. pennellii, L. cheesmanii, L. chilense, L. peruvianum and L. parviflorum. L. esculentum (all ssp.) and L. pimpinellifolium expressed high susceptibility to O. lycopersici inoculation. Results of variance and cluster analysis of responses to O. lycopersici coincide with recent taxonomic classification and genetic relationships within genus Lycopersicon. Zusammenfassung Die Resistenz von 154 Nachkömmlingen von 9 Wild‐Lycopersicon spp. sowie von 5 Nachkömmlingen von 3 nahe verwandten Solanum spp. gegenüber dem Echten Mehltau der Tomate (Oidium lycopersici) wurde untersucht. Das Screeningverfahren zeigte wertvolle Resistenzen, hauptsächlich bei L. hirsutum, L. pennenllii, L. cheesmanii, L. chilense, L. peruvianum und L. parviflorum. Eine hohe Anfälligkeit gegenüber O. lycopersici wurde in L. esculentum (alle subspp.) sowie L. pimpinelliflorum beobachtet. Die Ergebnisse der Varianz‐ und Klusteranalysem der Reaktionen gegenüber O. lycopersici stimmten mit einer neulich erstellten taxonomischen Klassifikation sowie mit genetischen Verwandschaften innerhalb des Genus Lycopersiconüberein.
ISSN:0031-9481
0931-1785
1439-0434
DOI:10.1046/j.1439-0434.2000.00492.x