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本研究采用已筛选出的诱导菌，进行茎部注射接种，活化植株的抗性潜能，增强抵抗黄瓜霜霉菌（Ｐｓｅｕｄｏｐｅｒｏｎｏｓｐｏｒａｃｕｂｅｎｓｉｓｆ．ｓｐ．ｃｕｃｕｍｅｒｉｎｕｍ）侵染的能力。进一步测定和分析木质素、糖含量与诱导抗性之间的关系。研究结果表明：凡经诱导的植株，叶片中可溶性总糖和木质素含量均显著高于未诱导叶片中的含量。诱导叶片中可溶性总糖含量分别为１１．２１％和１０．６６％；木质素含量分别为８．４％和７．８％；而对照株（未诱导）叶的可溶性总糖只有９．５８％；木质素含量只有７％。试验结果表明，木质素和可溶性糖合成量的提高，是植物抗性潜能被激活的结果，是诱导抗性机制的一部分
In this study, the induced strains were screened for stem inoculation to activate the plant’s resistance potential and enhance the resistance to infection by Pseudoperonospora cubensisf.spcucumerinum. Further determination and analysis of the relationship between lignin, sugar content and induced resistance. The results showed that the content of total soluble sugar and lignin in leaves of all the induced plants were significantly higher than those in the non-induced leaves. The total soluble sugar content of the induced leaves was 11.21% and 10.66%, respectively; the content of lignin was 8.4% and 7.8% respectively; while the soluble sugar content of the leaves of the control plants (uninduced) was only 9.58 %; Lignin content of only 7%. The experimental results show that the increase of the synthesis of lignin and soluble sugar is the result of activation of plant resistance potential and part of the induced resistance mechanism