Pathotypes and Races of Pseudoperonospora cubensis – Different Concepts of Virulence Differentiation

Host-parasite interactions between Cucurbitaceae and P. cubensis exhibit significant variation. This contribution reviews the current state of knowledge regarding characterization of P. cubensis virulence variation on the level of pathotypes (variation in host genera and species host-range) and races (variation in intraspecific level). However, our knowledge of the interactions between P. cubensis isolates and the […]

Continue reading


Cucurbit Powdery Mildew Population Virulence Variation – a Complex View from a Global Perspective

Cucurbit powdery mildew (CPM) is mainly caused by two obligate ectoparasites, Golovinomyces orontii s.l. (Go) and Podosphaera xanthii (Px), that are highly variable in virulence. Various independent systems of CPM race determination and denomination have been used in recent decades. We recently developed new tools to enhance research of CPM virulence variation. Diversity models were […]

Continue reading


Resistance to Fungicides in Cucurbit Powdery Mildew in Europe

One hundred cucurbit powdery mildew (CPM) isolates (41 Golovinomyces orontii s.l. [Go], 59 Podosphaera xanthii [Px]) from the Czech Republic (2012 to 2015), were screened for fungicide efficacy to the six frequently used fungicides (quinoxyfen /Atlas 500 SC/, propiconazole /Bumper 25 EC/, fenpropimorph /Corbel/, dinocap /Karathane LC/ azoxystrobin /Ortiva/) and penconazole /Topas 100 EC/). Fungicide […]

Continue reading


Citrullus lanatus – a Potential Host of Powdery Mildew in the Czech Republic

Cucurbit Genetics Cooperative Report 23:46-48 (article 13) 2000 Eva Kristkova Research Institute of Crop Production Praha, Division of Genetics and Plant Breeding, Department of Gene Bank,. Slechtitelu 11, 783 71 Olomouc, Czech Republic Ales Lebeda Palacky University, Faculty of Science, Department of Botany, Slechtitelu 11, 783 71 Olomouc, Czech Republic Introduction .Within the cucurbits, watermelon […]

Continue reading


Disease Resistance of Cucurbita pepo and C. maxima Genetic Resources

Cucurbit Genetics Cooperative Report 22:53-54 (article 19) 1999 Eva Kristkova Research Institute of Crop Production Praha, Division of Genetics and Plant Breeding, Department of Gene Bank, Slechtitelu 11, 783 71 Olomouc, Czech Republic Ales Lebeda Palacky University, Faculty of science, Department of Botany, Slechtitelu 11, 783 71 Olomouc, Czech Republic Introduction A collection of genetic […]

Continue reading