[PG01-58] バナナネモグリセンチュウの野菜類6作物23品種における増殖性
The banana burrowing nematode (Radopholus similis) is distributed in subtropical and tropical regions of southern Europe, Africa, North America, South America, Australia, India, Southeast Asia, etc. It is designated as a quarantine pest because of its obvious risk of damaging useful plants if it spreads. In this study, inoculation tests of this species were conducted on 23 varieties of 6 vegetable crops grown in Japan, and the growth rate on each crop was investigated. Nematodes were sterilized and propagated on carrot discs, and inoculated with either 200 or 500 nematodes per plants, and then kept at 25°C for 2 months in cultivation room. As a result, banana burrowing nematode propagate about 2.0- to 24-fold in okra, 2.4- to 32-fold in taro, 0.4- to 0.5-fold in ginger, 0.7- to 7.2-fold in tomato, 0.6- to 5.1-fold in eggplant, and 3.3- to 6.8-fold in peanut, with particularly strong growth in okra and taro. The multiplication was greater in the case of the 200-inoculated. Differences among varieties were also observed in some crops.