Infection biology, seed transmission, and epidemiology of spot blotch of barley caused by Bipolaris sorokiniana [powdery mildew, disease incidence]

antagonism antagonisme antagonismo biologia biologie biology bipolaris disease resistance disease transmission enfermedades de las plantas erysiphe graminis graine hordeum vulgare maladie des plantes mildews mildiou oidium morbidite morbidity morbosidad pathogenicity plant diseases racine resistencia a la enfermedad roots seeds semilla symptome symptoms temperatura temperature transmission des maladies variedades varieties