نتایج جستجو برای: venturia

تعداد نتایج: 391  

2015
Thomas S Jones Adam R Bilton Lorraine Mak Steven M Sait

Parasitoids face challenges by switching between host species that influence survival and fitness, determine their role in structuring communities, influence species invasions, and affect their importance as biocontrol agents. In the generalist parasitoid, Venturia canescens (Gravenhorst) (Hymenoptera: Ichneumonidae), we investigated the costs in encapsulation, survival, and body size on juveni...

Journal: :Phytopathology 2004
F Calenge A Faure M Goerre C Gebhardt W E Van de Weg L Parisi C-E Durel

ABSTRACT The major scab resistance gene Vf, extensively used in apple breeding programs, was recently overcome by the new races 6 and 7 of the fungal pathogen Venturia inaequalis. New, more durable, scab resistance genes are needed in apple breeding programs. F(1) progeny derived from the cross between partially resistant apple cv. Discovery and apple hybrid 'TN10-8' were inoculated in the gree...

2010
Marie Metzger Deborah Fischbein Alexandra Auguste Xavier Fauvergue Carlos Bernstein Emmanuel Desouhant

Keywords: cue mating system parasitoid sex pheromone signal Venturia canescens wind tunnel In many animals, mating takes place after natal dispersal. Consequently, use of reliable information is required to increase the probability of encounters between the sexes. Most of the studies on mate finding in parasitoid insects have focused on the role of a single information source: a sex pheromone. ...

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