山楂花腐病病原菌分生孢子在清水中不萌发,而在0.5%葡萄糖、0.5%粗制麦芽糖、5%山楂叶片汁液、0.5%和1%山楂花朵柱头汁液中均能萌发,其中以在0.5%粗制麦芽糖和0.5～1%山楂花朵柱头汁液萌发中萌发率最高。子囊孢子只在含有微量生物素和硫酸素中能少量的萌发。菌系在20～25℃温度范围内生长良好,超过30℃时几乎不能生长,低于10℃时菌丝生长很慢。菌丝在马铃薯蔗糖培养基上生长较好。 The conidia of Hawthorn flower rot pathogen did not germinate in water but germinated in stigma juice of 0.5% glucose, 0.5% crude maltose, 5% hawthorn leaf juice, 0.5% and 1% hawthorn flowers, % Germination of crude maltose and 0.5 ~ 1% of the hawthorn flower germination rate is highest. Ascospores only germinate in small amounts with trace amounts of biotin and sulphate. The strain grows well in the temperature range of 20 ~ 25 ℃, almost can not grow more than 30 ℃, when the temperature is lower than 10 ℃, mycelial growth is very slow. Mycelium grew well on potato sucrose medium.