CARACTERÍSTICAS CULTURAIS E PATOLÓGICAS DE Bipolaris maydis
EM DIFERENTES MEIOS DE CULTURA Ribeiro, julianasaltiresdossantos@yahoo.com.br, amaraljr@pq.cnpq.br, mrclvivas@hotmail.com, janielims19@yahoo.com.br, railanferreira@hotmail.com, silvaldo@uenf.br Revista Brasileira de Milho e Sorgo, v.15, n.3, p. 462-470, 2016 RESUMO A mancha de Bipolaris, causada por Bipolaris maydis, é uma das principais doenças foliares de Zea mays, apresentando um considerável potencial de dano, notadamente, na cultura do milho-pipoca, embora trabalhos sobre este patossistema ainda sejam escassos. Neste trabalho, avaliaram-se as influências de diferentes meios de cultura sobre o crescimento micelial, esporulação e a infectividade de inóculo conidial de B. maydis em folhas da cultivar suscetível Beija-flor, de milho-pipoca. Para tal, instalaram-se experimentos em laboratório e em casa de vegetação em blocos casualizados com quatro repetições.
CULTURAL AND PATHOLOGICAL FEATURES OF Bipolaris maydis
IN DIFFERENT CULTURE MEDIAABSTRACT. The Southern corn leaf blight, caused by Bipolaris maydis, is a major foliar disease of corn, presenting considerable potential of damage, especially in Zea mays, although studies with this pathosystem are still scarce. In this paper, the effect of different culture media was evaluated on mycelial sporulation and infectivity of conidial inoculum of B. maydis on leaves of the susceptible cultivar Beija-Flor, of corn-popcorn. Experiments in laboratory and greenhouse were installed in a randomized blocks design with four replications. The mycelial growth and sporulation of B. maydis on different culture media (Potato Dextrose Agar, Bean Agar, Coconut Water Agar, Rice Polished Agar, Corn Leaf Agar Lactose Casein Agar) were evaluated in the laboratory. In the greenhouse it was evaluated the number of lesions per leaf and the incidence of disease in susceptible plants inoculated with a suspension of 10 4 conidia/ml.
CULTURAL AND PATHOLOGICAL FEATURES OF Bipolaris maydis
IN DIFFERENT CULTURE MEDIAABSTRACT. The Southern corn leaf blight, caused by Bipolaris maydis, is a major foliar disease of corn, presenting considerable potential of damage, especially in Zea mays, although studies with this pathosystem are still scarce. In this paper, the effect of different culture media was evaluated on mycelial sporulation and infectivity of conidial inoculum of B. maydis on leaves of the susceptible cultivar Beija-Flor, of corn-popcorn. Experiments in laboratory and greenhouse were installed in a randomized blocks design with four replications. The mycelial growth and sporulation of B. maydis on different culture media (Potato Dextrose Agar, Bean Agar, Coconut Water Agar, Rice Polished Agar, Corn Leaf Agar Lactose Casein Agar) were evaluated in the laboratory. In the greenhouse it was evaluated the number of lesions per leaf and the incidence of disease in susceptible plants inoculated with a suspension of 10 4 conidia/ml. The culture medium Polished Rice Agar promoted the highest mycelial growth, but did not prom...