KANG Jun,WANG Li-fang,JING Lan.Screening of Optimum Concentration andTime on Sunflower Resistance toRust Disease Induced by Oligosaccharide[J].HEILONGJIANG AGRICULTURAL SCIENCES,2010,(09):56-58.
寡糖诱导向日葵抗锈病最佳浓度及时间筛选
- Title:
- Screening of Optimum Concentration andTime on Sunflower Resistance toRust Disease Induced by Oligosaccharide
- 文章编号:
- 1002-2767(2010)09-0056-03
- 分类号:
- S435.655
- 文献标志码:
- A
- 摘要:
- 向日葵锈病(Puccinia henlianthi Schw.)是向日葵的主要病害,危害日益严重。利用诱导剂激活植物的抗病防卫反应,是防治植物病害的一种很好的途径。通过用寡糖诱导处理向日葵幼苗,对接种锈菌的幼苗病情指数与相对防效的测定,筛选寡糖最佳诱导浓度及最佳诱导时间。结果表明:100倍浓度寡糖诱导有较好的防效;寡糖诱导向日葵的最佳时间在接菌前1~2 d,2 d效果最佳。
- Abstract:
- Sunflower rust is one of the major diseases of sunflower and is increasingly serious.A good way to prevent and control of plant diseases is to use the elicitor to induce activation of defense responses of plants.In this study,through spraying sunflower seedlings leaves with different concentration oligosaccharide and at different time before or after inoculation with pathogen,the optimum inducing concentration and time were screened.The resrults showed that the effect of 100-fold dilution on the disease development was the best.The best inducing results were obtained with oligosaccharide treatment 1 to 2 days before inoculation,and 2 days was the best inducing time.
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备注/Memo
基金项目:国家向日葵产业技术体系建设资助项目(Nycytx-21)