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.
出处
《植物研究》
CAS
CSCD
北大核心
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
