First report of Botrytis cinerea causing gray mold of Jamaica cherry in Taiwan

Abstract

Gray mold of Jamaica cherry caused by Botrytis cinerea was first found in Taiwan during March to June of 2005. The typical symptom of gray mold showed abundant gray mycelia and conidia was observed on the infected fruit of Jamaica cherry after raining season. The pathogen was isolated from infected fruit and cultured on PDA for further fungal morphological observation and confirming its pathogenicity according to Koch's postulates. Results of morphological data and pathogenicity test showed that the gray mold of Jamaica cherry was caused by B. cinerea. 由Botrytis cinerea引起的西印度櫻桃灰黴病，於2005年3至6月間在台灣首次被發現。在梅雨季節的雨後，受感染的西印度櫻桃果實部位出現典型灰黴病病徵，病徵上覆蓋一層灰色黴狀物及孢子。由病組織上分離病原菌並培養於馬鈴薯葡萄糖洋菜培養基上，以觀察其型態特徵；另依柯霍氏法則(Koch's postulates)確定其病原性。由病原菌型態、病原性及對溫度的反應等結果證實西印度櫻桃灰黴病確由B. cinerea所引起。