| 何成兴1, 王群1, 卢文洁2, 王艳青2, 李春花2, 吴文伟1, 黄月揖3, 马俊平3, 胡先奇3, 王莉花2*.西南部分地区荞麦根结线虫种类与地理分布[J].植物保护,2016,42(3):208-211. |
| 西南部分地区荞麦根结线虫种类与地理分布 |
| Geographical distribution and species of root-knot nematodes on buckwheat in some areas of southwest China |
| 投稿时间：2015-04-22 修订日期：2015-06-15 |
| DOI： |
| 中文关键词: 荞麦 根结线虫 种类鉴定 地理分布 |
| 英文关键词:buckwheat root-knot nematode species identification geographical distribution |
| 基金项目:国家现代农业产业技术体系-荞麦病虫草害防控岗位(CARS-08-C-2)；云南省自然科学基金项目(2014FB160); 云南省技术创新人才项目(2014HB062) |
| 作者 | 单位 | | 何成兴1, 王群1, 卢文洁2, 王艳青2, 李春花2, 吴文伟1, 黄月揖3, 马俊平3, 胡先奇3, 王莉花2* | 1. 云南省农业科学院农业环境资源研究所, 昆明650205
2.云南省农业科学院生物技术与种质资源研究所, 云南省农业生物技术重点实验室, 农业部西南作物基因资源与种质创制重点实验室, 昆明650223
3. 云南农业大学农业生物多样性与病虫害控制教育部重点实验室, 昆明650201 |
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| 中文摘要: |
| 近年来，随着我国荞麦面积的迅速增加，根结线虫病呈逐年加重趋势，严重影响了荞麦的产量与品质。本研究于2014年对西南10个地区17个乡镇秋播苦荞麦根结线虫的分布、发生种类以及危害程度进行了调查。结果表明，西南地区危害荞麦的根结线虫种类有南方根结线虫(Meloidogyne incognita)、爪哇根结线虫(M.javanica)和花生根结线虫(M.arenaria) 3种，其中南方根结线虫为优势种群。田间根结线虫种群大多数为单一种群，23.5%的样品为南方根结线虫与爪哇根结线虫(或花生根结线虫)组成的混合种群。调查发现前作为烟草或马铃薯的地块，荞麦根结线虫发生危害严重，平均被害株率为6.0%～77.5%，病情指数为1.4～26.1，而前作为玉米的荞麦根结线虫则较轻，被害株率最高为16.0%，相应病情指数为2.3。 |
| 英文摘要: |
| In recent years, root-knot nematode disease in China increased year by year and seriously affected the crop yield and quality as the rapidly extending of the buckwheat growing. During 2014, the distribution, species and damage of root-knot nematodes on buckwheat were investigated in southwest China. Three species, including Meloidogyne incognita, M. javanica and M. arenaria, were observed on buckwheat, and M. incognita was the dominant species. Most root-knot nematode populations are single species in fields, and only 23.5% samples were mixed populations of M. incognita and M. arenaria (or M. javanica). The root knot nematodes occurred seriously on buckwheat when preceding crop was tobacco or potato, and the average damage rate ranged from 6% to 77.5%, with the disease indexes varied between 1.4 and 26.1. However, the root knot nematodes only lightly occurred if corn was the preceding crop, and the highest damage rate was 16% with a disease index of 2.3. |
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