抄録
A method was investigated to artificially generate fruit core rot in Japanese pear by injecting a spore suspension through the calyx end of a fruit into the core using a syringe. When a spore suspension of Phomopsis sp. was inoculated using 107 spores per fruit, a heavy type of fruit core rot was effectively generated. On the other hand, when a spore suspension of Colletotricum sp. was inoculated at 105 spores per fruit, a mild type of fruit core rot was effectively generated.
