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First record of Oidiopsis taurica causing powdery mildew of Capparis spinosa in Egypt.

机译:导致埃及 Capparis spinosa 白粉病的 Oidiopsis taurica 的第一记录。

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摘要

Powdery mildew infections were observed on Capparis spinosa plants in Wadi El-Arbaein, Saint Katherine Protectorate, Egypt, in the early autumn to the end of winter of 2007 and 2008 when temperatures vary from the lowest mean value of 2.8 degrees C to the highest mean value of 26.5 degrees C. Symptoms first appeared as white circular patches on the adaxial leaf surface (<1.3 cm in diameter), and as the disease progressed, both leaf surfaces were infected and these chlorotic areas eventually turned to necrotic lesions. On the basis of morphological characteristics and pathogenicity tests, the causal agent was identified as O. taurica. This is thought to be the first record of a powdery mildew disease on C. spinosa in Egypt. Recently, Leveillula taurica, the teleomorph stage of O. taurica, was reported from C. spinosa in Turkey.
机译:2007年秋天初至2007年和2008年冬季末,在埃及圣凯瑟琳保护区Wadi El-Arbaein的 Capparis spinosa 植物上观察到白粉病感染,此时温度从最低均值变化。 2.8°C至26.5°C的最高平均值。症状首先以白色圆形斑点出现在叶片正面(直径<1.3 cm),并且随着病情的发展,叶片的两个表面均被感染,这些褪绿区域最终变成坏死病变。根据形态学特征和致病性测试,将病因鉴定为 O。 taurica 。认为这是在iC上首次出现白粉病的记录。埃及的spinosa 。最近是 O的变胚阶段 Leveillula taurica 。 taurica ,据报道来自 C。 spinosa 在土耳其。

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