关键词: 柑桔类果树, 植物病害, 炭疽病, 分生孢子盘

Abstract: Conidia of Colletorichum gloeoprioides germinated and formed appressorium on young leaves (14-day-age) of Citrusunshin Marc. within 24 hours after inoculation. Four days later, infection hyphae occurred from appressorium and pierced the cuticle or stomate. Some liyphae formed in the intracells of the epidermis later, but the hyphae remained quiescent untill the leaves were wounded, leading to formation typical an thranose stroma.

Key words: CITRUS-RETICULATA TREES, PLANTDISEASE, ANTHRACNOSE, ACERVALUS