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| 三七根腐病田间分级标准研究及评价 | |
| 引用本文： | 李迎宾,刘屹湘,朱书生,罗来鑫,李健强.三七根腐病田间分级标准研究及评价[J].植物病理学报,2020,50(4):450-461. |
| 作者姓名： | 李迎宾 刘屹湘 朱书生 罗来鑫 李健强 |
| 作者单位： | 中国农业大学植物保护学院/种子病害检验与防控北京市重点实验室,北京 100193; 云南农业大学植物保护学院/农业生物多样性与病虫害控制教育部重点实验室,昆明650201 |
| 基金项目： | 云南省重大科技计划“克服三七连作障碍技术体系构建及应用”(2016ZF001) |
| 摘 要： | 目前三七Panax notoginseng (Burk. ) F. H. Chen]根腐病尚无病害分级标准,为发现抗病种质资源和评估病害防控效果,本研究建立了用于三七根腐病的田间分级标准。从云南省文山州收集200株发生根腐病的三年生植株,筛选获得具有代表性不同腐烂程度的98株样本,通过对表面腐烂占比、横截面腐烂、支须根腐烂、芽及芦头腐烂5项指标进行描述,采用SPSS21进行样本聚类分析,制定了如下用于三七根腐病的田间分级标准:0级,健康,无症状;1级,腐烂仅发生在块根表面、且0＜腐烂面积占比≤10%,或腐烂已扩展至内部且5%＜腐烂面积占比≤10%;2级,腐烂已扩展至内部、且10%＜腐烂面积占比≤40%,支须根无腐烂;3级,腐烂已扩展至内部、且40%＜腐烂面积占比≤50%,支须根腐烂;4级,腐烂已扩展至内部、且50%＜腐烂面积占比≤70%,支须根腐烂脱落;5级,腐烂已扩展至内部、且腐烂面积占比＞70%直至整个块根完全腐烂,支须根腐烂。本标准于2016~2017年连续2年被用于评价土壤处理防控三七根腐病害的发生危害和防治效果,结果显示,该标准可以较好地对不同土壤处理的防病效果进行量化和评估,且与传统分级标准相比,其评价结果更优。 |
| 关 键 词： | 根腐病 分级标准 |
| 收稿时间： | 2019-09-15 |
Grading system for Panax notoginseng root rot disease |
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| LI Ying-bin,LIU Yi-xiang,ZHU Shu-sheng,LUO Lai-xin,LI Jian-qiang.Grading system for Panax notoginseng root rot disease[J].Acta Phytopathologica Sinica,2020,50(4):450-461. | |
| Authors: | LI Ying-bin LIU Yi-xiang ZHU Shu-sheng LUO Lai-xin LI Jian-qiang |
| Institution: | College of Plant Protection/Beijing Key Laboratory of Seed Disease Testing and Control (BKL-SDTC), China Agricultural University, Beijing 100193, China; College of Plant Protection/Key Laboratory of Agricultural Biodiversity for Plant Disease Management, Ministry of Education, Yunnan Agricultural University, Kunming 650201, China |
| Abstract: | There are no standards for grading Panax notoginseng root rot disease. To find disease-resistant germplasm resources and evaluate disease-control effects, a new system for grading P. notoginseng root rot disease in field was established. In total, 200 diseased samples of 3-year-old Sanqi ginseng (P. notoginseng) were collected from Wenshan country, Yunnan Province, China, and 98 samples with varying degrees of decay were evaluated further. These samples were clustered and analyzed using SPSS21 according to five indices: the decay area, the presence of cross-section rot, rot of branches and fibrous roots, bud rot, and Lutou rot. The developed grading system was as following: Grade 0, healthy, no symptoms; Grade 1, rot occurs only on the surface and decay area is ≤10%, or rot has spread to the interior and decay area is >5% and ≤10%; Grade 2, rot has spread to the interior and decay area is >10% and ≤40%, with no rotten branches or fibrous roots; Grade 3, rot has spread to the interior and decay area is >40% and ≤50%, with rot of branches and fibrous roots; Grade 4, rot has spread to the interior and decay area is >50% and ≤70%, with rot of branches and fibrous roots; and Grade 5, rot has spread to the interior and decay area is >70% or roots have rotted completely, with rot of branches and fibrous roots. The effects of soil treatments on controlling Sanqi root rot disease were examined using this grading system in 2016 and 2017, and the results showed that it could be used in practice. Compared with traditional grading systems, this new one was better for making evaluations and the results better reflect real conditions. |
| Keywords: | Root rot disease Grading standard |
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