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Scytalidium lignicola é um fungo que causa podridão negra em raízes e caules de mandioca. A esporulação de S. lignicola foi avaliada em 8 meios de cultura - BDA, SA, AvA, BSA, LCA, suco V-8, Mandioca-agar (MAND-A) e MA - sob regime de alternância de luz (12h claro/12h escuro) e 3 temperaturas (25 28 e 30ºC). Discos de 5mm de diâmetro retirados da borda da colônia cultivada em meio BDA, após 5 dias de incubação a 28ºC, foram transferidos para o centro de placas de Petri contendo 15mL de cada meio com inibidores seletivos. Após 5 dias de incubação, os esporos foram quantificados em contagens realizadas em câmara de Neubauer. O experimento seguiu delineamento inteiramente casualizado em esquema fatorial 8 x 3 (Meios x Temperaturas). Observou-se que houve diferença significativa apenas para os meios de cultura, não havendo diferença entre as temperaturas testadas. A esporulação de S. lignicola foi superior nos meios suco V-8, BDA, MAND-A, AvA, BSA e SA, não diferindo entre si estatisticamente. Enquanto nos meios MA e LCA ocorreram as menores esporulações, também não havendo diferença entre si. Scytalidium lignicola causes black root rot and stem rot on cassava plants. The sporulation of S. lignicola was evaluated in 8 different culture media as following: potato-dextrose-agar (PDA), soybean-agar, oat-extract-agar, potato-sucrose-agar (PSA), coconutextract-agar, V-8 juice-agar, cassava-agar and corn meal-agar, under light alternation (12h light/12h dark) at three different temperatures 25, 28 and 30ºC. Discs measuring 5mm were removed from the border of a 5-days old fungus culture in PDA. These discs were transferred to the center of Petri dishes containing 15mL of each media with selective inhibitors. After 5 days of incubation, the spores were counted in a Neubauer chamber. The experiment was installed using a randomized block design in a factorial 8 media x 3 temperatures scheme. It was observed that the only significant factor was the media culture, V-8 juice-agar , PDA, cassava-agar, oat-extract-agar, PSA, and soybean-agar media gave the best fungus sporulation without significant difference among them. There was no significant difference between the corn meal-agar and coconutextract-agar media for fungus sporulation. On these media, fungus sporulation was the lowest compared to the other media

Avaliação de diferentes meios de cultura na esporulação de Scytalidium lignicola