作　　者： ; ;

机构地区： 淄博学院

出　　处： 《淄博学院学报（自然科学与工程版）》 2000年第3期75-78,共4页

摘　　要： 用不同浓度 (100～ 400mg/L)的 Zn(NO3)2和 Zn(NO3)2＋ Ca(NO3)2溶液处理蒜鳞茎发现：高 Zn2＋对蒜根有毒害作用 ,随浓度增大和处理时间延长 ,细胞有丝分裂指数下降 ,而核异常细胞比率先升 (100～ 300mg/L)后降 (400mg/L).在 Zn2＋中加入 Ca2＋ ,能提高细胞有丝分裂指数 ,降低核异常细胞比率 ,变化总趋势与单 Zn2＋类似 ,但核异常细胞比率一直上升 .此结果表明适量的 Ca2＋对 Zn2＋的毒害有一定的缓解作用 . When the bulb of Allium L.was treated in solution in which there were different Zn(NO3)2 and Zn(NO3)2＋ Ca(NO3)2 concentrations ,it was found that with the increase of concentrations and the prolong of treatment time ,the mitosis index was lower ,the rate of abnomal nucleus was higher at 100～ 300mg/L ,and lower at 400mg/L .The mitosis index rose and the rate of abnormal nucleus was lower as the Zn2＋ and Ca2＋ act simultaneously ,the tendency was similar to the single Zn2＋ ,but the rate of abnormal nucleus rose all the time .The results shown that Ca2＋ had some detoxication effect to Zn2＋ .

关 键 词： 蒜鳞茎 毒害 解毒效应 有丝分裂 锌 钙 核异常细胞 植物抗逆性

领　　域： [农业科学] [农业科学] [生物学]