[Effect of gradient magnetic field on growth of stem pearls of Dioscorea opposita during seedling stage].

Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica · 2000 · Benefit · Very low evidence

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BenefitVery low evidencePaper 3942

Stem pearls treated twice with a gradient magnetic field showed the best growth during the seedling stage. Compared with control, emergence rate increased by 38.60%, root number increased by 8%, and average root length increased by 2.62 cm; an F-test for aver…

Study snapshot

PublicationZhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica · 2000

Study typeother

Reported directionBenefit

Evidence ratingVery low

Abstract

OBJECTIVE: To probe into the bioeffect of gradient magnetic field on the growth and development of medicinal plants. METHODS: Gradient magnetic field with transmission belt was applied to treat the stem pearis of Dioscorea opposita before sowing and an evaluation of the pearl growth during the seedling stage was made. RESULT: Treated with twice gradient magnetic field, the stem pearls grew the best in the seedling stage. Compared with the control, the rate of emergence increased by 38.60%, root number increased by 8%, and the average root length increased by 2.62 cm. By F Test, the average root length was F = 19.98, F0.05 = 6.94 and F0.01 = 18.00. CONCLUSION: Proper magnetic field intensities can promote the growth of medicinal plants.

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AI evidence extraction

Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typeother

Effect directionbenefit

PopulationDioscorea opposita (medicinal plant) stem pearls during seedling stage

Sample sizeNot supplied

ExposureNot supplied

Evidence strengthVery lowConfidence: 66% · Peer reviewed: yes

Main findings

Outcomes measured

rate of emergence
root number
average root length

Limitations

No sample size reported in abstract
Magnetic field intensity and other exposure parameters not reported in abstract
Study design details (randomization/blinding) not described

View raw extracted JSON

{
  "study_type": "other",
  "exposure": {
    "band": null,
    "source": "gradient magnetic field (pre-sowing treatment with transmission belt)",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": "Dioscorea opposita (medicinal plant) stem pearls during seedling stage",
  "sample_size": null,
  "outcomes": [
    "rate of emergence",
    "root number",
    "average root length"
  ],
  "main_findings": "Stem pearls treated twice with a gradient magnetic field showed the best growth during the seedling stage. Compared with control, emergence rate increased by 38.60%, root number increased by 8%, and average root length increased by 2.62 cm; an F-test for average root length is reported (F=19.98; F0.05=6.94; F0.01=18.00).",
  "effect_direction": "benefit",
  "limitations": [
    "No sample size reported in abstract",
    "Magnetic field intensity and other exposure parameters not reported in abstract",
    "Study design details (randomization/blinding) not described"
  ],
  "evidence_strength": "very_low",
  "confidence": 0.66,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "gradient magnetic field",
    "magnetic field treatment",
    "Dioscorea opposita",
    "medicinal plants",
    "seedling stage",
    "emergence rate",
    "root growth"
  ],
  "suggested_hubs": []
}

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AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: Not supplied
PubMed: 12512421

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