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首页> 外文期刊>Pakistan Journal of Nematology >Effect of sugar beet as a trap crop on the population density of Meloidogyne incognita infecting subsequent common dry bean
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Effect of sugar beet as a trap crop on the population density of Meloidogyne incognita infecting subsequent common dry bean

机译：甜菜作为诱集作物对南方根结线虫感染随后普通干豆的种群密度的影响

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摘要

Sugar beet (Beta vulgaris L.) cv. Gazelle was planted under screen house conditions to assess its ability as a trap crop to reduce population density of root-knot nematode, Meloidogyne incognita on subsequent common dry bean (Phaseolus vulgaris L.). Treatments were made by removing whole plant or cutting sugar beet above the surface of soil in each pot 6, 12, 18, 24, 30 and 36 days after nematode inoculation. The population density of root-knot nematode as indicated by the number of galls and egg-masses on roots of sugar beet increased gradually as influenced by the time of gathering. Root-knot nematode started to lay egg-masses after the 18th day to the 24,f,day till the end of experiment. On subsequent common dry bean, root-knot nematode significantly (p<0.05) reduced on that cultivar of dry bean as influenced by the tested treatments made to sugar beet i.e. cutting or uprooting (removal) and time of harvest. In general, the nematode parameters as indicated by the numbers of galls, egg-masses andhatched juveniles on roots of dry bean and number of juveniles in soil were higher on dry bean plants replacing cutting sugar beet than those on dry bean plants replacing uprooted sugar beet within the most periods. In contrast, plant growth parameterswere higher for dry bean plants replacing uprooted sugar beet than parameters for plants replacing cutting sugar beet.
机译：甜菜（Beta vulgaris L.）cv。瞪羚在筛选房条件下种植，以评估其作为诱捕作物降低随后的普通干豆（菜豆）上根结线虫（Meloidogyne incognita）种群密度的能力。通过在线虫接种后第6、12、18、24、30和36天在每个盆中去除整株植物或在土壤表面上方切甜菜来进行处理。甜菜根上的虫gall和卵团数表明，根结线虫的种群密度受采集时间的影响逐渐增加。从第18天到第24天，直到实验结束，根结线虫才开始产卵。在随后的普通干豆上，根茎线虫的根结线虫受制于甜菜的经测试处理（即切割或连根拔除（去除）和收获时间）显着降低（p <0.05）。通常，线虫参数由干豆根上的胆，卵团和孵化的幼虫的数量以及土壤中的幼虫的数量所表示，在代替切丝甜菜的干豆植物上高于代替连根拔除的甜菜的干豆植物上的线虫参数在大多数时期内。相反，代替连根拔除的甜菜的干豆植物的植物生长参数高于代替切丝甜菜的植物的植物生长参数。

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