Population Dynamics and Generation Cycle of <i>Meloidogyne hapla</i> on <i>Codonopsis pilosula</i>

XIE Zhijun; SHI Mingming; WU Jin; ZHANG Ling; CHEN Jinghuan; LI Huixia

doi:10.12101/j.issn.1004-390X(n).202212033

JOURNAL OF YUNNAN AGRICULTURAL UNIVERSITY（Natural Science） > 2024 > 39(3): 40-45. > DOI: 10.12101/j.issn.1004-390X(n).202212033

XIE Zhijun, SHI Mingming, WU Jin, et al. Population Dynamics and Generation Cycle of Meloidogyne hapla on Codonopsis pilosula[J]. JOURNAL OF YUNNAN AGRICULTURAL UNIVERSITY（Natural Science）, 2024, 39(3): 40-45. DOI: 10.12101/j.issn.1004-390X(n).202212033

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Population Dynamics and Generation Cycle of Meloidogyne hapla on Codonopsis pilosula

1.
Animal Husbandry-Pasture and Green Agriculture Institute, Gansu Academy of Agricultural Sciences, Lanzhou 730070, China
2.
College of Plant Protection, Gansu Agricultural University/Biocontrol Engineering Laboratory of Crop Diseases and Pests of Gansu Province, Lanzhou 730070, China
3.
Gansu Provincial Meteorological Information and Technical Equipment Support Center, Lanzhou 730070, China

More Information

Received Date: December 24, 2022
Revised Date: July 07, 2024
Accepted Date: July 09, 2024
Available Online: July 11, 2024
Published Date: July 18, 2024

Graphical Abstract

Abstract

Abstract

Purpose
To clarify the population dynamics and generation cycle of Meloidogyne hapla on Codonopsis pilosula in Gansu Province, providing a theoretical basis for timely and effective control of the disease.
Methods
In 2021, soil and root samples were periodically collected from one fixed plot of C. pilosula. The 2nd instar larvae of M. hapla in soil and each morphology of nematode in root tissues were separated and counted under stereo microscope.
Results
Beginning in early April, M. hapla disease of C. pilosula in Gansu Province could occur four generations per year, with average duration of 36 days, it took 28 days for minimum and 53 days for maximum to complete a generation. The temperature and precipitation had great effects on the development of M. hapla on C. pilosula. The development period was shorter under appropriate temperature of 18 ℃ and the precipitation of 141-176 mm in the field, and the average generation was about 30 days.
Conclusion
This study clarifies the population dynamics and generation cycle of M. hapla in Gansu Province, which has guiding significance for the timely prevention and control of the disease.
- Codonopsis pilosula,
- Meloidogyne hapla,
- population dynamics,
- generation cycle

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References

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