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首页> 外文期刊>Plant Disease >First Report of Leaf Blight of Taro (Colocasia esculenta) Caused by Phytophthora colocasiae in Ghana
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First Report of Leaf Blight of Taro (Colocasia esculenta) Caused by Phytophthora colocasiae in Ghana

机译：由加纳疫霉引起的芋头叶枯病的首次报道

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摘要

Taro (Colocasia esculenta (L.) Schott) is an important food crop cultivated for its edible tubers in Ghana. In May 2009, outbreaks of a destructive leaf disease were observed on several taro farms in the Atiwa, East-Akim, Fanteakwa, West-Akim, and New Juaben districts of the Eastern Region of Ghana. Symptoms began on leaves as small, brown, water-soaked lesions that enlarged and coalesced into large lesions with yellow exudate, ultimately leading to the defoliation and death of plants. Symptoms were suggestive of taro leaf blight (TLB) caused by Phytophthora colocasiae Raciborski (3). By August 2010, the disease had spread to other taro-growing regions in Ghana. To identify the pathogen, leaf tissue from lesion margins were excised and plated on carrot agar and V8 selective media for Phytophthora and incubated at 27°C for 5 days (2). Growth from diseased tissue was used for morphological characterization.
机译：芋头（Colocasia esculenta（L.）Schott）是在加纳为其食用块茎栽培的重要粮食作物。 2009年5月，在加纳东部地区的Atiwa，East-Akim，Fanteakwa，West-Akim和New Juaben地区的几家芋头农场都爆发了破坏性叶病。症状开始于叶片，为小的，褐色的，浸水的病斑，扩大并合并为带有黄色渗出液的大病斑，最终导致植物脱叶和死亡。症状表明由马铃薯疫霉菌Raciborski引起的芋叶枯萎病（TLB）（3）。到2010年8月，该病已蔓延至加纳的其他芋头种植地区。为了鉴定病原体，从病灶边缘切下叶片组织，并将其铺在胡萝卜琼脂和V8选择性培养基中以用于疫霉菌，并在27°C下孵育5天（2）。来自患病组织的生长用于形态学表征。

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