植物抽提物对几种植物病原线虫的杀线活性筛选

测定了中国湖北、陕西及广东省的10科14种植物抽提物对几种植物病原线虫的杀线活性，结果表明：对松材线虫，毛鱼藤（Derris elliptica)根有极强杀线活性，三尖杉（Cephalotaxus fortunei)茎叶、粗榧（Cephalotaxus sinensis)叶、狼牙刺（Sophora viciifolia)种子、紫斑牡丹（Paeonia suffrutccosa)茎有强杀线活性，神农香菊（Dendranthemaindicum)全株有中等杀线活性，斥叶乌头（Aconitum hemsleyanum)全株、香果树（Emmenopterys henuyi)叶，东方荚果蕨（Matteuccia orientalis)茎叶、大叶醉鱼草（Buddleja davidii)叶均无杀线活性；对花生根结线虫及水稻潜根线虫，三尖杉茎叶、狼牙刺种子、紫斑牡丹茎有极强杀线活性，神农香菊全株有中等杀线活性；大血藤（Sargentodoxus argotae-nia)茎、巴东木莲（Manglietia patungensis)叶、土麦冬（Liriope spicata)全株及鹅掌揪（Liriodendron chinese)叶对松材线虫、花生根结线虫均无杀线活性。

Screening for Nemaicidal Activity of Some Chinese Plant Extracts against Plant Parasitic Nematodes, Bursaphelenchus xylophilus, Meloidogyne arenaria and Hirschmanniella oryzae

Extracts of 14 Chinese plants (belong to 10 families in Hubei,Shanxi and Guangdong Provinces, China) were assessed for nematicidal activity against Bursaphelenchus xylophilus using a fungal feeding method in vitro. Some of 14 plant extracts were also assessed for nematicidal activity against Meloidogyne arenaria and Hirschmanniella oryzae . Five plant extracts( Cephalotaxus fortunei, Cephalotaxus sinensis, Paeonia suffrutccosa, Sophora viciifolia and Derris elliptica ) showed strong nematicidal activity against Bursaphelenchus xylophilus ; 3 plant extracts ( Cephalotaxus fortunei, Paeonia suffrutccosa, Sophora viciifolia ) also showed strong nematicidal activity against M. arenaria and H.oryzae . While 4 plant extracts ( Sargentodoxus argotaenia, Manglietia patungensis, Liriope spicata, and Liriodendron chinese ) demonstrated no nematicidal activity against B. xylophilus and M. arenaria .