九州の線虫相より(3)

Abstract

1. Among the nematodes found in Kyushu and identified by the authors, the following were regarded noteworthy from the viewpoints of nematode distribution-and parasitism: (1) Aphelenchus avenae and Paraphelenchus amblyurus from the soil of sweet potato field in Arao City, Kumamoto Pref., (2) Gracilacus from the soil of mulberry (Morns bombycis) garden in Mizuho Village, Nagasaki Pref., soil of korai-shiba (Zoysia matrella var. tenuifolia) garden in Unzen, Nagasaki Pref., soil of paniculata (hinoki, Chamaecyparis obtusa, and sasa, Sasa albo-marginata) in Kuroishibaru, Kumamoto Pref., (3) Helicotylenchus dihystera, from the upland soils gathered. throughout Nagasaki Pref., (4) Hemicriconem oides sp., from the soil of korai-shiba garden in Unzen, Nagasaki Pref., (5) Nothotylenchus, from the buds of strawberry plant in Kanoya City, Kagoshima Pref., (6) Pratylenchus thornei, from the upland soil in Ojika Island, Nagasaki Pref., (7) P. peneprans, from the soil of chrysanthemum in Kashima City, Saga Pref., (8) Pratylenchus sp., from the soil of loquat (Eriobotrya japonica) garden in Nagasaki City, Nagasaki Pref., (9) Tylenchorhynchus brevidens, from the upland soil in.Iki. Island, Nagasaki Pref., (10) T. nothus, in Mizuho Village and Kuchinotsu Town, Nagasaki Pref., (11) Tylenchorhynchus spp., in Nagasaki Pref.2. In regard to the root-lesion nematodes of the common fields in Kyushu, Pratylenchus coffeae was most frequently found and the damage was most conspicuous. Damage by P. zeae was of next order in seriousness.3. Seven species of the stunt nematodes are known in Kyushu as based on investigation conducted by the latter author.