Phomopsis Fruit Rot of Subtropical Peach in Taiwan

台灣亞熱帶桃果腐病

柯勇(Yeong Ko) ； 孫守恭(Shou-Kung Sun)

《植物病理學會刊》 12卷3期 (2003/09) Pp. 212-214

https://doi.org/10.6649/PPB.200309_12(3).0010

摘要

1998年6月,於台中縣新社鄉及東勢鎮地區之台農甜蜜桃及台農春蜜桃之品種上,發現桃果發病初期,於果實表面出現褐色水潰狀斑點,隨後病斑繼續擴大,變成「污白色」，邊緣褐色,果肉腐爛。後期病組織失水而皺縮,其上密生污白色至黑色小點,此為病原菌之柄子殼。從果實罹病組織部份進行病原菌之分離、培養,並依柯霍氏法則測定病原菌之病原性後,證明亞熱帶桃之果腐病的病原菌是Phomopsis mali Roberts non (Schulzer & Sacc.) Died。本文描述與記載本省亞熱帶桃果腐病的病徵。

關鍵字

Phomopsis mali ； 桃果腐病 ； 亞熱帶桃 ； 新病害

並列摘要

Phomopsis fruit rot of subtropical peach was first found in Hsin-She (新社) Township and Tungshish (東勢) Township of Taichung. County in June, 1998. Both of peach cultivars, Tainon Honey Peach (Prunus P. presicae cv﹒premier) and Tainon Spring Peach (P. presicae cv. springhoney) were affected. In the early stage of infection, brownish water-soaked spots appeared on the surface of the nearly-matured fruit. Later, the diseased spots expanded quickly and turned to dirt white with brown edge, while as the inner flesh was rotting completely. Diseased tissue was shrunk due to the lose of water. No sooner, brown-to-black dot like pycnidia grew from the diseased tissue. Causal organism was isolated and Koch's postulate was fulfilled. It was indicated that the causal organism was Phomopsis mali Roberts. Phomopsis fruit rot disease of the subtropical peach caused by P. mali is a new recorded disease in Taiwan.

並列關鍵字

Phomopsis mali ； Phomopsis fruit rot ； peach ； new disease