The results showed that Alternaria obpyriformis T.Y Zhang could live through the winter on plant debris with the mycelium and the pycnidiospore.

• 结果表明，病原菌可在病残体上以菌丝和分生孢子越冬，通过气孔和伤口侵入寄主，分生孢子能借助气流传播；