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研究了经 Ｃｄ２＋ 溶液处理后的菱（ Ｔｒａｐａ ｂｉｃｏｒｎｉｓ Ｏｓｂｅｃｋ）浮水叶显微结构和超微结构的变化情况．５０ μｍ ｏｌ／ Ｌ和１００ μｍ ｏｌ／ Ｌ Ｃｄ２＋ 溶液处理引起叶显微结构的变化：细胞变形、溶解；组织松散、解体，栅栏组织和海绵组织均遭到破坏．菱叶细胞受一定浓度 Ｃｄ２＋ （大于 １０ μｍ ｏｌ／ Ｌ）毒害后，其细胞核的核质消失，但核膜保持完整；叶绿体基粒数目减少，基粒片层解体，叶绿体双层膜断裂．通过研究，提供了 Ｃｄ２＋ 毒害引起的细胞结构变化情况和叶片形态上的受害特征
The changes of microstructure and ultrastructure of Trapa bicornis Osbeck leaves treated with Cd2 + were studied. The changes of leaf microstructure caused by 50 μmol / L and 100 μmol / L Cd2 + solution treatment: cell deformation and dissolution; loose tissue, disintegration, palisade tissue and sponge tissue were destroyed. After being poisoned by cadmium (more than 10 μmol / L), the nuclear cytoplasm disappeared, but the nuclear membrane remained intact. The number of chloroplast mitochondrion decreased, the basal lamina disintegrated and the chloroplast double membrane ruptured. Through the research, we provide the Cd2 + toxicity caused by changes in cell structure and leaf morphological characteristics of victims