Observations on the population biology of the grape powdery mildew fungus Uncinula necator [Vitis vinifera L. - Southern Italy]

adn ciclo biologico ciclo vital comportamento sessuale comportamiento sexual comportement sexuel cycle de développement dna epidemiologia epidemiology epidemiología genetic variation grapevines life cycle mildews mildiou oidium mildiu muffe fitopatogene rapd sexual behaviour uncinula variación genética variation génétique variazione genetica vid vigne vitis vinifera vitis vinífera épidémiologie