With the increace of zn stress , the content of chlorophyll , superoxide dismutase ( sod ) activity and soluble protein content dropped significantly , peroxidase ( pod ) and catalase ( cat ) activities rised at first and lowered later , and malonyl dialdehyde ( mda ) content increased drastically 随锌胁迫程度的增大，叶绿素含量、 sod （超氧化物歧化酶）活性和可溶性蛋白含量呈下降趋势；而pod （过氧化物酶）和cat （过氧化氢酶）活性则先升后降； mda （丙二醛）含量上升。
