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腰果是印度喀拉拉邦的一种重要经济作物。1979年,在特里凡得琅腰果园发现了一种新叶斑病,发病初期在叶片上出现小斑点,随病情发展病斑逐渐扩大形成或多或少不规则的黑褐色斑块。在某些情况下,在一个叶片上许多病斑溶合成片,致使叶片枯萎。在马铃薯葡萄糖琼脂培养基(PDA)中分离培养出致病菌,取10日龄培养物的分生孢子悬浮液喷雾接种,进行致病性测
Cashew nuts are an important cash crop in Kerala, India. In 1979, a new leaf spot was found in the orchard of Thiruvananthapuram, with small spots on the leaves during the early stages of the disease. As the disease progressed, spots gradually expanded to form more or less irregular dark brown patches. In some cases, many spots on one leaf dissolve into pieces, causing the leaves to wilt. Pathogenic bacteria were isolated and cultured in potato dextrose agar (PDA), and the suspension of 10-day-old culture was inoculated by spray inoculation for pathogenicity test