Identification of pathogen of apple black spot from America.
进境美国苹果果实中黑斑病病原的初步鉴定。
A pathogen of black spot of citrus limon is primary identified by some observations and fungi cultivations of slices of ground infested leaves or fruits.
通过对柠檬的地面病叶和感病果实进行切片观察和组织分离培养，初步鉴定出引起柠檬黑星病的病原菌为球壳孢目球壳孢科茎点霉属真菌。
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