Journal
JOURNAL OF PHYTOPATHOLOGY
Volume 148, Issue 5, Pages 303-311Publisher
WILEY
DOI: 10.1046/j.1439-0434.2000.00492.x
Keywords
Lycopersicon spp.; germplasm evaluation; wild progenitors; Oidium lycopersici; resistance; taxonomic relationships; gene centers
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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.
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