Four species of plant nematodes were detected in illegal incoming mails intercepted at Xiamen Airport

Recently, Xiamen Airport Inspection and Quarantine Bureau intercepted two batches of imported mails from Hong Kong and South Korea, which are prohibited by China's regulations, such as Pinellia seedlings and Crassulaceae After quarantine in the plant quarantine laboratory of Xiamen Bureau Technology Center, four species of plant nematodes with economic significance were found, namely, the thick tailed dwarf nematode and the southern root knot nematode from Pinellia ternata seedlings, the small tailed shield nematode and the double Palace spiral nematode from succulent plants Among them, the two nematodes were first intercepted at Xiamen port Small data It was first found in sugarcane root girth, which has certain pathogenicity to sugarcane Later, it also occurs in a large number of horticultural plants, generally causing poor growth, dwarfism, yellowness and serious death of these plants It is the most harmful plant nematode in horticultural plants, but it has never been found in Pinellia plants of Chinese herbal medicine before ● the small tailed nematode was first collected from the red spider orchid of North Carolina in the United States, and then found in many countries in the world It has a wide range of hosts and can parasitize on tobacco, sugarcane, various fruit trees, flowers, lawns and herbages Although the nematode is not listed as quarantine object, it can spread and spread in China with the introduction and transportation of plants.