In order to provide technical support for risk management, risk analysis and risk assessment of pests carried by citrus seedlings in China were carried out. Through consulting domestic and foreign literature, a total of 259 species of pests that may be transmitted to banana seedlings exported to China were determined, including 53 fungus, 9 bacteria,9 viruses, 11 nematodes, 167 insects, 1 mollusc, 1 weed, 8 mites (including spiders). According to the distribution of pests in China (not distributed or not widely distributed), whether it is officially controlled, and the possibility of carrying with banana seedlings, 18 potential quarantine pests were determined to be further evaluated, including 4 fungus, 7 bacteria, 4 viruses, 2 nematodes and 1 insect. The 18 potential quarantine pests were qualitatively and quantitatively analyzed one by one in terms of entry, colonization, possibility of spread, economic impact and comprehensive evaluation of multiple indicators, and 14 high-risk pests and 4 extremely high-risk pests were identified. The quarantine risk of citrus seedlings imported to China was determined to be extremely high based on the highest risk level among all quarantine pests. Finally, 18 types pests including Bisifusarium dimeru on citrus seedlings imported to China were identified, and corresponding risk management measures were proposed.
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |