作　　者： ; ; ; ;

机构地区： 中山大学生命科学学院

出　　处： 《中山大学学报（自然科学版）》 2005年第4期107-110,共4页

摘　　要： 研究了重金属镉和铜处理了6d的长喙田菁根和叶细胞亚显微结构的变化。结果表明,无论是镉还是铜的处理,亚显微结构的变化均相似,而且植株外观形态变化与亚显微结构的变化相吻合。通过实验可看到,0.10mmol·L-1是镉和铜处理长喙田菁的临界浓度。而细胞中已破坏的细胞器和未被破坏的细胞器的共存表明,长喙田菁细胞中存在对镉和铜的耐性机理,使植物在镉和铜的处理下仍能生长。 Effects of heavy metals Cd and Cu on uhrastructures of root tip and leaf cell of Sesbania rostrata seedling, which was incubated in Hoagland solutions containing respective Cd and Cu for 6 days, were determined. It was seemed that the concentration 0.10 mmol· L^-1 was critical for what seedling of S. rostrata tolerates to both Cd and Cu. The coexistence of the damaged and undamaged organelles in the seedlings exposed to the concentration of Cd or Cu indicated that there were some mechanism, which help the seedlings tolerate to the toxicities from Cd and Cu, processed in S. rostrata, so that the seedlings could be kept to grow.

关 键 词： 长喙田菁 亚显微结构

领　　域： [环境科学与工程]