The root-lesion nematode Pratylenchus spp. is the most important plantparasitic nematode due to its worldwide distribution, wide host ranges, and migratory endoparasitic characteristics. One population of Pratylenchus collected from the giant pussy willow (Salix chaenomeloides Kimura) in the Andong area as part of a nematode survey in Korea was characterized morphologically and by molecular methods. The analysis of morphological measurements and morphometric characteristics, as well as DNA sequencing of the rRNA large subunit (LSU) D2/D3 expansion segments and the internal transcribed spacer (ITS) gene sequence, confirmed the identity of this population as P. hippeastri. This study is the first report of P. hippeastri associated with Salix chaenomeloides in Korea and worldwide. Further studies on distribution and pathogenicity in different P. hippeastri host crops, such as grapevines, strawberries, and apples, are necessary. The taxonomic keys to 16 Pratylenchus species in Korea are provided.

최근 5년 동안 식물검역 현장에서 검출된 뿌리썩이선충속 선충을 분류하여 Pratylenchus crenatus, P. fallax, P. kumamotoensis, P. panamaensis, P. penetrans로 동정하였다. 이 종들의 진단형질은 구순부의 주름 수, 두부의 형태, 구침의 길이, 수컷의 유무, 측대의 구조, 수정낭의 형태, 후부자궁낭의 길이, 미부의 형태 등을 포함한다. 이들의 사진과 측정치 및 형태적 특징을 기술하였다.

The genus Pratylenchus is considered as one of the most important plant-parasitic nematodes around the world because of its broad spectrum host ranges and worldwide distribution. 72 species of root-lesion nematodes have already been described from various parts of the globe. Among all of them, only 5 species are regulated as a target species in quarantine inspection. As the importation of target items inspecting nematodes are surely increasing every year, detection rate of nematodes in quarantine also increased. However, the rate of species identification has been decreased due to lack of related information. The species belonging to genus Pratylenchus are shown very low identification rate because we have specimens and information about only 10 domestic species and 5 regulated species. In this study, we identified the species in the genus Pratylenchus and obtained related information for application in the quarantine field. Species identification was performed with extracted nematodes from plants obtained in the recent quarantine inspection. Newly identified species were 5 species including Pratylenchus crenatus, P. fallax, P. kumamotoensis, P. panamaensis and P. penetrans. The photos, measured value and morphological characters of each species are provided.