大理大学学报 ›› 2021, Vol. 6 ›› Issue (12): 87-90.

• 学生园地 • 上一篇    下一篇

基于贝尔曼漏斗法的土壤线虫最优分离时长探究

  

  1. 1. 大理大学农学与生物科学学院,云南大理 671003 2. 云南省富源县第一中学,云南曲靖 655500;3. 大理大学东喜玛拉雅研究院,云南大理 671003

  • 收稿日期:2021-01-29 出版日期:2021-12-15 发布日期:2022-01-14
  • 通讯作者: 李延鹏,讲师,博士,E-mail:liyp@eastern-himalaya.cn。
  • 作者简介:普国庆,2018级生物科学专业本科生。
  • 基金资助:
    云南省地方本科高校(部分)基础研究联合专项资金项目 (202001BA070001-227);云南省教育厅科学研究基金项目( 2020J0543);云南省绿色环境发展基金会项目(YGF/YGM/DLULYP082619)

Study on Optimal Extraction Duration of Soil-Nematode Based on Baermann Funnel Method

  1. 1.College of Agriculture and Biology Science, Dali University, Dali, Yunnan 671003, China; 2. Fuyuan NO.1 Middle School, Qujing, Yunnan 655500, China; 3. Institute of Eastern-Himalaya Biodiversity Research, Dali University, Dali, Yunnan 671003, China
  • Received:2021-01-29 Online:2021-12-15 Published:2022-01-14

摘要: 贝尔曼漏斗法是土壤线虫分离中较为常用的方法,但现有研究使用的分离时长差异较大,缺乏统一标准。为探究其最优分离时长,该研究利用贝尔曼漏斗法分离土壤线虫,连续72 h 进行计数,分别计算12、24、36、48、60、72 h 的累积分离率。结果显示,就分离种类而言24 h为峰值,与48 h比较差异无统计学意义 (21.00±2.54 vs. 21.00±1.00, P=0.817);就分离数量而言36 h 是最适时长,累计分离率达99.63%。实验共分离出线虫24 777头,属2纲6目21科35属,涵盖了较多的线虫类群,具有普适性。综合分离种类和数量,推荐贝尔曼漏斗法的分离时长为 36 h。

关键词: 土壤线虫, 贝尔曼漏斗法, 分离时长

Abstract:

The Baermann funnel method is common in soil-nematode extraction. However it has been found that the extraction durations in studies varies greatly and there is a lack of agreed standard. To explore the optimal extraction duration the Baermann funnel method was used to extract soil-nematode for 72 h and the cumulative separation rates were calculated for 12 24 36 4860 and 72 h respectively. The results showed that in terms of the separation of taxa 24 h was the peak value and it has no difference from that of 48 h21.00±2.54 vs. 21.00±1.00P=0.817); in terms of the separation of numbers 36 h was the most appropriate time and the cumulative separation rate was 99.63%. A total of 24 777 nematodes were isolated in the experiment belonging to 2 classes 6 orders 21 families and 35 genera covering a large number of nematode groups and having universal applicability. Considering the taxa and numbers the recommended separation time of the Bellman funnel method is 36 h.

Key words:

">  , soil-nematode, Baernrmann funnel method, extraction duration

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