| 甘肃省马铃薯黑痣病菌融合群鉴定及生物药剂筛选 |
| 点此下载全文 |
| 引用本文：黄振博，李继平，郑 果，王 立，惠娜娜，赵常权，李欣雨，拜治民.甘肃省马铃薯黑痣病菌融合群鉴定及生物药剂筛选[J].西北农业学报,2026,(3):535~539 |
| DOI: |
| 摘要点击次数: 213 |
| 全文下载次数: 64 |
|
| 基金项目:甘肃省科技计划(20CX9NA091);甘肃省农业科学院院级科研计划(2024GAAS16);甘肃省省级科技计划(18YF1NA095-1)。 |
|
| 中文摘要:为明确甘肃省马铃薯黑痣病的融合群类型及优势致病融合群，筛选对优势致病融合群防效较好的生物农药，对分离纯化得到的75株立枯丝核菌菌株进行融合群测定和室内毒力测定，结果表明：75株立枯丝核菌分为3个融合群包括AG-3、AG4-HG-Ⅱ和AG-5，其中AG-3为优势致病融合群，占所有菌株的66.67% ，AG4-HG-Ⅱ和AG-5的占比分别为10.67%和22.67%。10种生物药剂对AG-3的室内毒力测定结果表明，1 000亿/g枯草芽孢杆菌WP和3亿/g哈茨木霉WP的抑制效果较好，EC50分别为0.035 4 mg/L 和0.066 2 mg/L。 |
| 中文关键词:马铃薯黑痣病：立枯丝核菌融合群：生物杀菌剂：室内毒力 |
| |
| Identification of Anastomosis Groups of Rhizoctonia solani Causing Potato Black Scurf and Screening of Biological Control Agents in Gansu Province |
|
|
| Abstract:To determine the anastomosis group (AG) types and identify the predominant pathogenic AG of potato black scurf disease in Gansu Province,and to screen biological control agents against the dominant pathogenic group. This study identified the anastomosis groups and evaluated the indoor virulence of 75 purified isolates of Rhizoctonia solani. The results showed that isolates belonged to three AGs:AG-3,AG4-HG-II, and AG-5,with AG-3 identified as the predominant pathogenic group,accounting for 66.67% of all isolates. The proportions of AG4-HG-II and AG-5 were 10.67% and 22.67% respectively. Indoor toxicity test of 10 biological agents against AG-3 indicated that Bacillus subtilis WP (1.0×1011 CFU/g) and Trichoderma harzianum WP (3.0×108 CFU/g) exhibited the most effective activities,with EC50 values of 0.035 4 mg/L and 0.066 2 mg/L respectively. |
| keywords:Potato black scurf Anastomosis group of Rhizoctonia solani Biological fungicides Indoor toxicity |
| 查看全文 查看/发表评论 下载PDF阅读器 |
