以接种松材线虫的湿地松来作为实验材料，对感病湿地松叶片内可溶性糖含量与叶片质膜透性变化的关系进行研究。
This paper, however, conducts some research on the relationship between the soluble sugar content and the plasma-membrane permeability of Pinus elliottii inoculated with pine wood nematode.
结果表明：抗感品种接种细菌性斑点病菌后叶片中SOD和POD活性在病程的大部分较对照增加，总体而言抗病品种叶片中SOD活性总体增加幅度高于感病品种。
The results showed that SOD and POD activity in leaves of most of the resistant soybean varieties were higher than CK, and those in susceptible ones were lower than CK.
叶片过氧化物酶活性升高，分析叶片总活力和叶胞外酶的活力表明，感病番茄过氧化物酶活力主要位于胞外。
Analysing both the total and apoplastic activity in the leaves, the peroxidase was mainly located at intercellular Spaces.
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