Effect of Several Chemicals on Induction Resistance to Downy Mildew in Cucumber Seedlings

Li Yuhong, Cheng Zhihui, Chen Xiaoguang,

Chinese Agricultural Science Bulletin ›› 2005, Vol. 21 ›› Issue (8) : 343-343. DOI: 10.11924/j.issn.1000-6850.0508343
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Effect of Several Chemicals on Induction Resistance to Downy Mildew in Cucumber Seedlings

  • Li Yuhong, Cheng Zhihui, Chen Xiaoguang,
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Abstract

Aqueous solutions of BTH、SA、BABA、Oxalic acid and KCl were used on seedling with two true leaves 2 days before inoculation with P. cubensis. Results obtained showed t these inducer all could induce resistance in cucumber against downy mildew except KCl. The better inducer in the study were BTH and oxalic acid and their optimum induction concentration were 0.5 mmol/L and 10 mmol/L respectively. Expression of resistance in the leaves after BTH or oxalic acid treatment continued for at least 15 days. The combination of BTH with oxalic acid or BABA did not more significantly increase the induce effect than simple inducer.

Key words

Chemical inducer;Cucumber downy mildew;Induce resistance

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Li Yuhong, Cheng Zhihui, Chen Xiaoguang,. Effect of Several Chemicals on Induction Resistance to Downy Mildew in Cucumber Seedlings. Chinese Agricultural Science Bulletin. 2005, 21(8): 343-343 https://doi.org/10.11924/j.issn.1000-6850.0508343

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