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Volume 8 Issue 2
Jun.  2017
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Article Navigation >  Journal of Tropical Biology  > 2017  >  8(2): 185-189

SUN Yanfang, LONG Haibo, YUE Jianjun, FENG Tuizi, BAI Cheng. Suppression Effect of Heterorhabditis bacteriophora on Meloidogyne incognita[J]. Journal of Tropical Biology, 2017, 8(2): 185-189. doi: 10.15886/j.cnki.rdswxb.2017.02.010
Citation: SUN Yanfang, LONG Haibo, YUE Jianjun, FENG Tuizi, BAI Cheng. Suppression Effect of Heterorhabditis bacteriophora on Meloidogyne incognita[J]. Journal of Tropical Biology, 2017, 8(2): 185-189. doi: 10.15886/j.cnki.rdswxb.2017.02.010
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Suppression Effect of Heterorhabditis bacteriophora on Meloidogyne incognita

doi: 10.15886/j.cnki.rdswxb.2017.02.010

  • Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan 571101, China

  • Received Date: 2016-09-23
  • Rev Recd Date: 2017-01-03
  • In order to understand the biocontrol potential of entomopathogenic nematode Heterorhabditis bacteriophora SD（ Hb SD） on Meloidogyne incognita,we inoculated Hb SD infected juveniles（ IJs） suspension and the2 nd stage juveniles（ J2） of M. incognita onto potted tomatoes to test the changes of oocyst numbers on tomato roots,root knot index（ RKI） and reproduction factor（ Rf） to study the suppression effect of Hb SD on M. incognita. The results showed that Hb SD inoculation at the 3 different inoculation time and 2 concentrations had a significantly different（ P ﹤ 0. 05） effect on the oocyst numbers,RKI and Rf. The RKI,the oocyst number and the Rf of the treatment Hb SD 6 000 IJs + M. incognita were 2. 67,53. 8 and 19. 77 in the tomato roots,which were obviously lower than those of the control（ 3. 5,82. 2 and 26. 81） and inhibited upto 31. 40% of M. incognita in the tomato roots.
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Suppression Effect of Heterorhabditis bacteriophora on Meloidogyne incognita

doi: 10.15886/j.cnki.rdswxb.2017.02.010
  • Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan 571101, China
  • Received Date: 2016-09-23
  • Rev Recd Date: 2017-01-03

Abstract: In order to understand the biocontrol potential of entomopathogenic nematode Heterorhabditis bacteriophora SD（ Hb SD） on Meloidogyne incognita,we inoculated Hb SD infected juveniles（ IJs） suspension and the2 nd stage juveniles（ J2） of M. incognita onto potted tomatoes to test the changes of oocyst numbers on tomato roots,root knot index（ RKI） and reproduction factor（ Rf） to study the suppression effect of Hb SD on M. incognita. The results showed that Hb SD inoculation at the 3 different inoculation time and 2 concentrations had a significantly different（ P ﹤ 0. 05） effect on the oocyst numbers,RKI and Rf. The RKI,the oocyst number and the Rf of the treatment Hb SD 6 000 IJs + M. incognita were 2. 67,53. 8 and 19. 77 in the tomato roots,which were obviously lower than those of the control（ 3. 5,82. 2 and 26. 81） and inhibited upto 31. 40% of M. incognita in the tomato roots.

SUN Yanfang, LONG Haibo, YUE Jianjun, FENG Tuizi, BAI Cheng. Suppression Effect of Heterorhabditis bacteriophora on Meloidogyne incognita[J]. Journal of Tropical Biology, 2017, 8(2): 185-189. doi: 10.15886/j.cnki.rdswxb.2017.02.010
Citation: SUN Yanfang, LONG Haibo, YUE Jianjun, FENG Tuizi, BAI Cheng. Suppression Effect of Heterorhabditis bacteriophora on Meloidogyne incognita[J]. Journal of Tropical Biology, 2017, 8(2): 185-189. doi: 10.15886/j.cnki.rdswxb.2017.02.010
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