Chlorophyll content, Soluble protein content, POD activity, CAT activity, SOD activity, and MDA content of Spirodela polyrhiza were measured, and transmission electron microscopy was observed.

• 主要测定了叶绿素含量、可溶性蛋白含量及抗氧化系统的几种酶,包括POD、CAT、SOD的活性以及MDA含量的变化,并观察了叶绿体超微结构的变化。