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小蔓长春花(Vinca minor Linn)是引进南斯拉夫的药用植物,在温州栽培后发生严重的炭疽病,几乎无法栽培。病菌Colletotrichum dematium(Pers.ex Fr.)Grove能侵染茎蔓、叶片及叶柄,最易侵染嫩梢。病斑部变色,病部以上萎蔫枯死. 病菌在PDA培养基上生长良好.以25—28℃最适.分生孢子盘在28—30℃形成最多.光线能促进孢子形成,同时能抑制孢子萌发.病菌能利用葡萄糖、淀粉及甘油作为碳源.氮源以谷氨酸最好,也能利用硫酸二氢铵、硫酸铵、硝酸铵尿素,以尿素培养基上形成孢子最多。
Vinca minor Linn, a medicinal plant introduced to Yugoslavia, developed severe anthracnose after cultivation in Wenzhou and practically could not be cultivated. Germs Colletotrichum dematium (Pers.ex Fr.) Grove infects stalks, leaves and petioles, most likely to invade young shoots. The lesion discolored and the wilt wilted above the diseased part.The pathogen grew well on the PDA medium and was optimal at 25-28 ° C. The conidial disk formed the most at 28-30 ° C. The light could promote the sporulation and inhibit the spore Germination.The bacteria can use glucose, starch and glycerol as carbon source.The nitrogen source to glutamic acid is the best, but also can use ammonium sulfate, ammonium sulfate, ammonium nitrate urea, urea formation medium to form the most spores.