GAO Bo,HAO Yongli,HU Haibo,et al.Primary Research of the Nematicidal Acitivity of ‘Marigold No.1’ Plant on Root-knot Nematode[J].Northern Horticulture,2019,43(20):46-50.[doi:10.11937/bfyy.20190503]
“蒙菊一号”对根结线虫杀线活性初步研究
- Title:
- Primary Research of the Nematicidal Acitivity of ‘Marigold No.1’ Plant on Root-knot Nematode
- Keywords:
- marigold; different parts; root-knot nematode; nematicidal activity
- 文献标志码:
- A
- 摘要:
- 以万寿菊“蒙菊一号”植株及不同部位添加物为试材,采用离体毒力测定及盆栽试验的方法,研究了万寿菊对根结线虫的杀线活性,以期初步评估其对根结线虫的防治效果。结果表明:“蒙菊一号”植株具有较强的杀线活性,1.400%的提取物处理线虫36 h校正死亡率为94.51%。毒力方程为y=-0.524+2.045x,r=0.986,LC50=1.803 mg?mL-1。不同部位植株添加物对根结线虫的抑杀作用不同,杀线活性依次为花、根、茎、叶(花、根抑杀效果差距不显著(P<0.05))。盆栽试验中1.400%的根粉碎物能显著降低土壤中虫口密度,根虫口抑制率为79.16%。表明万寿菊“蒙菊一号”植株添加物防治根结线虫具备一定的可行性及有效性。
- Abstract:
- With ‘Marigold No.1’ and different parts of the plant as test materials,the nematicidal acitivity of marigold on root-knot nematode was studied by in vitro bioassay and pot experiment,so as to evaluate its control efficiency.The results showed that the ‘Marigold No.1’ plant had strong nematicidal activity,and 1.400% of the extracts treated the nematode with a corrected mortality rate of 94.51%.The virulence equation was y=-0.524+2.045x,r=0.986,LC50=1.803 mg?mL-1.The inhibitory effects of plant extracts on root-knot nematodes were different in different parts.The nematicidal activity were flower,root,stem and leaf (the difference between flower and root inhibition effect were not significant (P<0.05)).1.400% of the ground pulverized material could significantly reduce the density of insects in the soil,and the rootworm inhibition rate was 79.16% obtained by pot experiment.The above results indicates that the ‘Marigold No.1’ plant additive had certainly feasible and effective in controlling root-knot nematode.
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备注/Memo
第一作者简介:高博(1986-),女,内蒙古赤峰人,硕士,助理研究员,现主要从事经济作物栽培及病虫害防治等研究工作。E-mail:xixideboo@163.com.责任作者:郝永丽(1981-),女,内蒙古赤峰人,硕士,副研究员,现主要从事经济作物栽培及病虫害防治等研究工作。基金项目:内蒙古自治区自然科学基金资助项目(2017MS0325)。收稿日期:2019-04-30