亚硫酸氢钠对大蒜幼苗生长及细胞分裂的作用  

EFFECT OF SODIUM BISULFITE ON THE CELL DIVISIONAND GROWTH OF ALLIUM SATIVUM SEEDLINGS

作　　者：仪慧兰[1] 孟紫强[1] 

机构地区：[1]山西大学环境医学与毒理学研究所,生命科学系,太原030006

出　　处：《植物研究》2001年第3期384-387,共4页Bulletin of Botanical Research

基　　金：山西省自然科学基金资助

摘　　要：研究SO2 体内衍生物—亚硫酸钠与亚硫酸氢钠 (分子比为 3 :1 )混合液对大蒜幼苗生长和细胞分裂的效应。结果表明 :低浓度 (0 .2mmol/L)的混合液促进幼苗生长 ,短时间 (2 4h)作用时根尖细胞有丝分裂指数 (MI)提高 ;高浓度 (1 .5与 2 .0mmol/L)处理抑制大蒜幼苗生长 ,细胞周期延滞 ,大蒜根尖MI下降 ,并诱发细胞分裂异常 。The effects of sodium bisulfite on the cell division and growth of A. sativum seedlings were studied. The results showed that the mitotic index (MI) and growth speed increased when seedlings incubated in sodium bisulfite solution with lower concentration(0.2mmol/L). But seedlings growth slowed down when they incubated with higher concentrations(1.5 or 2.0mmol/L). Furthermore, SO 2 decreased MI significantly and induced abnormal division. At the same time cell cycle was delayed. The effects were dependent on the concentration and duration time.

关 键 词：SO2衍生物 大蒜 分裂异常 有丝分裂指数 幼苗生长 细胞分裂 毒性 

分 类 号：X503.23[环境科学与工程—环境工程] X835