| 李润根, 卢其能, 何 咪, 颜德聪, 李子奇, 刘伟俊, 肖世杰.百合新病原菌假短孢弯孢生物学特性及其对杀菌剂的敏感性[J].植物保护,2020,46(6):41-46. |
| 百合新病原菌假短孢弯孢生物学特性及其对杀菌剂的敏感性 |
| The biological characteristics of Curvularia pseudobrachyspora, a new causal agent of lily leaf spot, and its sensitivity to fungicides |
| 投稿时间：2019-08-16 修订日期：2019-10-11 |
| DOI：DOI:10.16688/j.zwbh.2019414 |
| 中文关键词: 百合 假短孢弯孢 形态特征 生物学特性 药剂敏感性 |
| 英文关键词:Lilium brownii var. viridulum Curvularia pseudobrachyspora morphological characters biological characteristics sensitivity to fungicide |
| 基金项目:江西省科技厅重点研发计划(20161BBF60040) |
|
| 摘要点击次数: 927 |
| 全文下载次数: 773 |
| 中文摘要: |
| 假短孢弯孢Curvularia pseudobrachyspora是我国新记录种, 首次在龙牙百合贮藏期腐烂鳞茎上发现, 并能引起龙牙百合叶斑病?为明确其生物学特性及其对药剂的敏感性, 研究了不同碳源?氮源?pH?光照?温度等处理对病原菌菌丝生长的影响, 并采用菌丝生长速率法测定该病原菌对9种杀菌剂的敏感性?研究表明, 最适合菌丝生长的碳源为麦芽糖和木糖, 氮源为牛肉浸膏, pH为7.0~8.0, 最适温度为30℃, 致死温度为52℃, 黑暗条件有利于菌丝生长, 病原菌可以侵染马铃薯?甘薯?荠菜, 不能侵染蒜?葱?在9种参试杀菌剂中, 1%申嗪霉素SC对该病原菌的毒力最高, 相应的抑制中浓度EC50为0.012 mg/L; 68%精甲霜·锰锌WG的毒力最低, EC50为15.820 mg/L? |
| 英文摘要: |
| Curvularia pseudobrachyspora is a new record in China. It was found for the first time on the rotten bulbs of Longya lily during storage and could cause the leaf spot of Lilium brownii var. viridulum. The biological responses of the pathogen to different carbon sources, nitrogen sources, pH and light treatments were also studied. The results showed that the most suitable carbon sources were xylose and maltose; the most suitable nitrogen source was beef extract; the optimum temperature for the mycelium growth was 30℃, and the mycelium lethal temperature was 52℃; the optimum pH for the mycelium growth was 7.0-8.0, and the suitable light condition for the mycelium growth was 24 h dark. The sensitivity of the pathogen to nine fungicides was tested, and the results showed that the inhibitory effects of six fungicides on the mycelium growth of the pathogen were significant. The fungicide shenqinmycin 1% SC had the strongest inhibitory effect among the fungicides tested, with an EC50 value of 0.012 mg/L. The fungicide metalaxyl-M·mancozeb 68% WG had the minimum inhibitory effect, with an EC50 value of 15.820 mg/L. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
