Abstract:
The effects of Cr
6+'s pollution on the ultrastructure of
Hydrocharis dubia mainly showed:plasmodesmata fractured,nuclei deformed in different ways,chloroplast enlarged,granum disorganized.Relationship between the le-vel of injured cell and cultural concentration was positive.On the
Hydrocharis dubia,H.verticillata,Brasenia schreberi,Trapa bispinosa was plasmolysis and black grains emerged between cell wall and cell membrane;physiological test showed:contents of MDA and O
2 were higher than that of control class.
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