轮藻生态变异及系统分类研究──Ⅰ．环境中有毒物质对轮藻托叶长度的影响  

THE STUDY ON THE ECOLOGICAL VARIATION AND SYSTEMATIC TAXIS OF CHAROPHYTES

作　　者：傅华龙 罗通 兰利琼 

出　　处：《四川大学学报（自然科学版）》1996年第3期316-322,共7页Journal of Sichuan University(Natural Science Edition)

基　　金：国家自然科学基金

摘　　要：报道了在实验条件下，模拟轮藻的自然生长环境，采用微量的含Ｃｄ２＋，Ｈｇ２＋，Ｃｒ６＋和敌枯双等４种药物，对布氏轮藻（ＣｈａｒａｂｒａｕｎｉｉＧｍ．）和普生轮藻（ＣｈａｒａＶｕｌｇａｒｉｓＶａｉｌｌ．ｅｘＬ．）进行处理．随着药物作用时间的延长，布氏轮藻和普生轮藻的托叶长度较对照组都发生了显著的变化．结果表明，同一种类的轮藻，其托叶的长度可随生态环境的不同而发生变化．因此，在轮藻系统分类研究中，单凭其托叶长短来区分种、变种、亚种或变型都是不全面的．This paper reports that in the condition of simulated nature Chara braunii Gm.and Chara. vulgaris Vaill ex L. were treated by trace Cd2+, Hg2+, Cr6+ and Dikushuang. The results indicate that as the treated time goes on, the stipule length of C. braunii and C. vulagaris changes greatly as compared with the control group. They can fully prove that the stipule length of same species of chara will change with the different ecological environments. Therefore,it isn't proper to differentiate the species,variety,subspecies and variant only according to stipule length.

关 键 词：轮藻 生态变异 托叶长度 有毒物质 分类 

分 类 号：Q949.218.3[生物学—植物学]