Nematicidal activity of Okinawa Island plants on the root-knot nematode Meloidogyne incognita (Kofoid and White) Chitwood
Nematicidal activity of Okinawa Island plants on the root-knot nematode Meloidogyne incognita (Kofoid and White) Chitwood
复制标题
冲绳岛植物对根结线虫南方根结线虫（Kofoid 和 White）Chitwood 的杀线虫活性
DOI：
10.1007/s11104-007-9499-7
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发表时间：
2008
期刊：
影响因子：
4.9
通讯作者：
Z. Moromizato
中科院分区：
文献类型：
--
作者：
S. Taba;Juri Sawada;Z. Moromizato
为了开发对南方根结线虫（Meloidogyne incognita（Kofoid and白色）chitwood）有效的生物防治方法，研究了分布于冲绳的野生植物的乙醇提取物和水提取物对南方根结线虫第二阶段M.对无名幼鱼（J2s）进行了评价。在体外试验中，29种提取物中的11种至少固定了一半的J2期线虫。鬼针草水提物var.radiataScherff、二软骨天胡荽HydrocotyledichondroidesMakino、伞房紫菀OxaliscorymbosaDC.、紫叶酢浆草，和Stenactis annus（L.）卡斯的固定化活性可达90%以上。其中，B. pilosavar.radiata活性最高。结果表明，各提取物对小菜蛾幼虫均有明显的固定、致死、驱避和卵孵化抑制作用。pilosaplant部分，但特别是从叶。植物提取物对南方根结线虫迁移率的影响大于对自由生活线虫Panagrolaimussp.的影响，这表明使用B.pilosa提取物可以抑制M. incognitaca而不显著影响有益线虫。
In order to develop biological control methods that are effective against the root-knot nematodeMeloidogyne incognita(Kofoid and White) chitwood, the activity of ethanolic and aqueous extracts of wild plant species distributed on Okinawa Island on the viability and mobility of second stageM. incognitajuveniles (J2s) was evaluated. Eleven of the 29 extracts immobilized at least half of the J2 stage nematodes in an in vitro assay. Aqueous extracts ofBidens pilosaL. var.radiataScherff,Hydrocotyle dichondroidesMakino,Oxalis corymbosaDC.,Oxalis corniculataL., andStenactis annus(L.) Cass gave 90% or better immobilization activity. Among these,B. pilosavar.radiatahad the highest activity. Significant immobilization, lethality, repellence and egg hatching inhibition were observed with extracts from eachB. pilosaplant part, but especially from leaves. The effects of plant extracts on the mobility ofM.incognitawere higher than on the free-living nematodePanagrolaimussp., suggesting thatM.incognitacould be suppressed usingB.pilosaextracts without significantly affecting beneficial nematodes.