| 王铮1, 顾毓敏1, 潘义宏2*, 李兴勇3, 李彪2, 郑武2, 邵小东3.水杨酸不同施用方式对诱导烟草抗病性的影响[J].植物保护,2016,42(4):236-241. |
| 水杨酸不同施用方式对诱导烟草抗病性的影响 |
| Effects of salicylic acid on the induced disease resistance oftobacco under different ways of application |
| 投稿时间：2015-06-29 修订日期：2015-10-08 |
| DOI： |
| 中文关键词: 烟草 病害 水杨酸 穿刺 诱导抗性 |
| 英文关键词:tobacco disease salicylic acid puncturing induced resistance |
| 基金项目:上海烟草集团有限责任公司科技项目（SZBCW201400878） |
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| 中文摘要: |
| 本研究比较了以0.25、0.50和0.75 mol/L水杨酸(SA)进行喷施、穿刺和化学农药防治烟草病害对田间烟草抗病性的影响。结果表明:外源喷施SA和吸附SA插签两种给药方式均能诱导烟草产生对烟草番茄斑萎病、黑胫病、普通花叶病、野火病和赤星病的抗性。SA诱导的抗性具有广谱性, 且防效随着施用浓度的增加而增加, 在0.75 mol/L时达到最大。相同浓度下, SA穿刺处理对烟草的抗性诱导较喷施处理更佳。处理后, 随时间的推移, 喷施SA处理抗性诱导呈逐渐降低的趋势, 而SA穿刺处理, 对烟株的抗性诱导作用在处理后第20~30 天达到最大, 在后期对烟草番茄斑萎病、野火病以及赤星病的抗性诱导作用显著高于对照(P<0.05)。综合分析表明, SA穿刺施药技术对烟株病害具有广谱性、持久性以及安全性等特点, 能保持高抗性诱导作用40 d以上, 并能有效减少农药使用量和次数, 降低烟叶原料农药残留, 具有较好的推广应用价值。 |
| 英文摘要: |
| Effects of salicylic acid (SA) on the induced disease resistance of tobacco were investigated by SA spraying and SA puncturing compared with pesticide control. The results showed that, compared with pesticide control, SA spraying and SA puncturing at the concentration of 0.25, 0.50 and 0.75 mol/L could improve the systemic acquired resistance of tobacco against tobacco tomato spotted wilt, tobacco black shank, tobacco mosaic, tobacco wildfire and tobacco brown spot disease. The application of SA with different concentrations showed positive and broad spectrum induced-resistance activities against tobacco diseases, and resistance level was increased with increasing concentrations of SA, moreover, 0.75 mol/L SA treatment reached the maximum resistance level. Puncturing treatment demonstrated a better control effect than spraying treatment at the same SA concentration. Under the SA spraying conditions, the resistance level was reduced with increasing of treatment time. Under the SA puncturing treatment, the maximum control effect was shown on the 20th-30th day. Compared with pesticide control, SA puncturing treatment significantly increased resistance to tobacco tomato spotted wilt, tobacco wildfire and tobacco brown spot disease (P<0.05). The results indicated that SA puncturing could maintain higher control effect for more than 40 days, and also effectively reduce the amount and frequency of applied pesticide and pesticide residues in tobacco. As SA puncturing could improve the disease resistance with broad spectrum, durability and security, it can be recommended for application in practice. |
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