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首页> 外文期刊>Journal of Nematology, with Annual of Applied Nematology >Potential of Leguminous Cover Crops in Management of a Mixed Population of Root-knot Nematodes (Meloidogyne spp.)
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Potential of Leguminous Cover Crops in Management of a Mixed Population of Root-knot Nematodes (Meloidogyne spp.)

机译：豆科覆盖作物在处理根结线虫（Meloidogyne spp。）混合种群中的潜力

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Root-knot nematode is an important pest in agricultural production worldwide. Crop rotation is the only management strategy in some production systems, especially for resource poor farmers in developing countries. A series of experiments was conductedin the laboratory with several leguminous cover crops to investigate their potential for managing a mixture of root-knot nematodes (Meloidogyne arenaria, M. incognita, M. javanica). The root-knot nematode mixture failed to multiply on Mucuna pruriens and Crotalaria spectabilis but on Dolichos lablab the population increased more than 2- fold when inoculated with 500 and 1,000 nematodes per plant. There was no root-galling on M. pruriens and C. spectabilis but the gall rating was noted on D. lablab. Greater mortality of juvenile root-knot nematodes occurred when exposed to eluants of roots and leaves of leguminous crops than those of tomato; 48.7% of juveniles died after 72 h exposure to root eluant of C. spectabilis. The leaf eluant of D. lablab wzs toxic to nematodes but the root eluant was not. Thus, different parts of a botanical contain different active ingredients or different concentrations of the same active ingredient. The numbers of root-knot nematode eggs that hatched in root exudates of M.pruriens and C. spectabilis were significantly lower (20% and 26%) than in distilled water, tomato)and P. vulgaris root exudates (83%, 72% and 89%) respectively. Tomato lacks nematotoxic compounds found in M. pruriens and C. spectabilis. Three months after inoculating plants with 1,000 root-knot nematode juveniles the populations in pots with M. pruriens, C. spectabilis and C. retusa had fceen reduced by approximately 79%, 85% and 86% respectively; compared with an increase of 262% nematodes in pots with Phaseolus vulgaris. There was significant reduction of 90% nematodes in fallow pots with no growing plant. The results from this study demonstrate that some leguminous species contain compounds that either kill root-knot nematodes or interfere with hatching and affect their capacity to invade and develop within their roots. M. pruriens, C. spectabilis and C. retusa could be used with effect to decrease a mixed field populations of root-knot nematodes.
机译：根结线虫是全世界农业生产中的重要害虫。轮作是某些生产系统中唯一的管理策略，特别是对于发展中国家资源贫乏的农民而言。在实验室中对几种豆科覆盖作物进行了一系列实验，以研究其处理根结线虫（Meloidogyne arenaria，M。incognita，M。javanica）混合物的潜力。根结线虫混合物无法在毛uc豆和猪屎豆上繁殖，但在Dolichos实验室上，每株植物接种500和1000根线虫后，种群增加了2倍以上。毛uri和奇异念珠菌没有根gal，但D. lablab记录了胆汁等级。当暴露于豆科作物的根和叶的洗脱液中时，幼虫的根结线虫的死亡率要高于番茄。 48.7％的未成年人在暴露于可食梭状芽胞杆菌根洗脱液中72小时后死亡。 D. lablab的叶洗脱液对线虫有毒，而根洗脱液无毒。因此，植物药的不同部分包含不同的活性成分或相同浓度的不同浓度。在尖锐梭状芽胞杆菌和奇异念珠菌的根系分泌物中孵出的根结线虫卵的数量显着低于蒸馏水，番茄和寻常型根腐病菌根系分泌物（83％，72％）（分别为20％和26％）。和89％）。番茄缺乏在瘙痒病菌和可食梭状芽胞杆菌中发现的线虫毒性化合物。在向植物接种1,000个根结线虫幼虫后三个月，盆栽有pruriens，C。spectabilis和C. retusa的粪便的粪便分别减少了约79％，85％和86％。相比之下，菜豆的锅中线虫数量增加了262％。在没有植物生长的休耕盆中，线虫的数量显着减少了90％。这项研究的结果表明，某些豆科物种含有杀死根结线虫或干扰孵化并影响其入侵和在其根内发育的化合物。可以使用pr。M. pruriens，C。spectabilis和C. retusa来减少根结线虫的混合田间种群。

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