| 摘要: |
| 【 目的】充分了解内蒙古各辣椒种植区域炭疽病发生严重程度、炭疽病病原菌类型及辣椒种质资源对 炭疽病的抗性水平，为选育和推广抗炭疽病辣椒品种、解决炭疽病难防难控问题奠定基础。【 方法】通过实地调查与文献综述方法，系统调查了内蒙古辣椒种植区域炭疽病发生情况；广泛采集各地区辣椒炭疽病发病果实样本，采用常 规组织分离方法分离纯化病原菌，通过离体辣椒果实接种确定其致病性，并结合形态学与分子生物学技术对分离菌株进行鉴定；在此基础上，利用离体果实接种方法评价了42份辣椒种质资源的抗炭疽病水平。【 结果】内蒙古各辣椒种 植区域中通辽市、巴彦淖尔市等干制辣椒产区辣椒种植历史悠久，炭疽病发生严重，鄂尔多斯市、乌兰察布市等鲜食辣 椒产区炭疽病危害较轻，各地炭疽病危害症状存在差异。病原菌鉴定结果显示，内蒙古地区辣椒炭疽菌共有3类，分 别为平头刺盘孢（Colletotrichum truncatum）、斯高维尔炭疽菌（Colletotrichum scovillei）、黑色炭疽菌（Colletotrichum nigrum），其中黑色炭疽菌分离率最高，达到60.7%，致病力较强，是内蒙古地区辣椒炭疽病优势菌种。供试的42份辣椒种质资源中，高感炭疽病材料23份，占供试材料的54.7%，主要包括C506-1、C288、C289、C284-1-1-1和C520等；中感材料11份，占比26.2%，包括C511、C233-1-1和C508等资源材料；中抗材料6份，占供试材料的14.3%，代表资源材料为C31、C168和C169等；高抗材料仅2份，分别为C519和C530，占比为4.8%。【 结论】内蒙古地区辣椒炭疽病病原菌共有3种，其中黑色炭疽菌为优势菌种且致病力强；筛选出的中抗和高抗炭疽病辣椒种质资源，可用于抗炭疽病 辣椒新品种选育，并具备推广应用的潜力。 |
| 关键词: 辣椒 炭疽病 病原鉴定 抗病种质筛选 |
| DOI：10. 13207/j. jnwafu. 2026. 11. 014 |
| 分类号: |
| 基金项目:内蒙古自然科学基金项目（2024QN03031，2025QN03071，2025MS03080）；内蒙古自治区人社厅2025年人才工作科研项目 |
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| Identification and analysis of pepper anthracnose and screening of resistant germplasm in Inner Mongolia |
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KANG Liru1, CHANG Haiwen1, ZHANG Pengcheng1, PENG Yue1, HAN Fengying1, WANG Zhiyu1, LIU Qianting1, LIU Huan2, YANG Zhigang1
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1.Institute of Vegetables and Flowers，Inner Mongolia Academy of Agricultural & Animal Husbandry Sciences，Hohhot，Inner Mongolia 010031，China;2.Inner Mongolia Autonomous Region Forestry and Grassland Pest Prevention and Quarantine Station， Hohhot，Inner Mongolia 010051，China
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| Abstract: |
| 【 Objective】This research aims to comprehensively investigate the severity，pathogenic agents，and host resistance of pepper anthracnose across major cultivation regions in Inner Mongolia，to provide a scientific basis for developing resistant cultivars and formulating effective management strategies against this economically significant disease.【Method】Based on field surveys and literature review，this study comprehensively investigated the occurrence of anthracnose in pepper planting areas in Inner Mongolia. Disease-infected pepper fruit samples were extensively collected from various regions. Pathogens were isolated and purified using conventional tissue isolation methods，and their pathogenicity was confirmed through inoculation of detached pepper fruits. The isolated strains were identified based on morphological characteristics combined with molecular biological techniques. Furthermore，the resistance levels of 42 pepper germplasm resources to anthracnose were evaluated using the detached fruit inoculation method.【Result】Dry chili pepper production areas such as Tongliao and Bayannur showed a high incidence of anthracnose due to their long cultivation history and favorable conditions for the pathogen，while fresh chili pepper production areas such as Ulanqab and Ordos showed lower incidence. The results of pathogen identification revealed three Colletotrichum species in Inner Mongolia：C.truncatum，C.scovillei，and C.nigrum.Among the three species，C.nigrum，with the highest isolation fre?quency of 60.7%，showed relatively strong pathogenicity and was identified as the dominant pathogen in Inner Mongolia. Among the 42 tested germplasms，23 varieties were identified as highly susceptible，accounting for 54.7% of the total tested varieties，mainly including C506-1，C288，C289，C284-1-1-1，C520 and other varie-ties.The remaining 11 varieties，such as C511，C233-1-1 and C508 were moderately susceptible to C.nigrum，accounting for 26.2% of the tested varieties.Six varieties were moderately resistant to C.nigrum，represented by C31，C168，C169，etc，and only C519 and C530 were highly resistant to anthracnose，accounting for 4.8% of the tested varieties.【Conclusion】Three species of Colletotrichum have been identified as causal agents of pepper anthracnose in Inner Mongolia，with C.nigrum being the predominant and most virulent pathogen. A valuable collection of pepper germplasm with significant resistance to anthracnose has been successfully established. The selected pepper germplasm accessions exhibit intermediate and high levels of anthracnose resistance，which hold great promise for application in breeding programs aiming at developing new anthracnose-resistant pepper varieties，and show potential for widespread application and production. |
| Key words: pepper anthracnose pathogen identification resistant germplasm screening |
