Cu^2＋对大蒜生长的影响及大蒜根，叶及蒜瓣对Cu^2＋的累积

研究不同浓度（10^-6-10^-4mol/L)硫酸铜（CuSO4,5H2O)溶液对大蒜（Allium satiuwn L.)根，叶和蒜瓣生影响及其这些器官对Cu^2 的积累能力，研究结果指出：在106-5-10^-4mol/L,Cu的处理下，Cu严重影响大蒜根和叶生长，大蒜具有较强吸收和积累Cu^2 的能力，随着Cu^2 处理浓度的增加，大蒜根中的Cu^2 含量递增，大蒜经10^-4mol/L,Cu处理，根部积累了大量的Cu，其含量是对照的52倍，在10^-5和10^-6mol/L Cu处理中，根中Cu的含量分别是对照的13倍和1．4倍，Cu主要积累在极中（10^-5-10^-4mol/L Cu处理），只有少量的转移到叶子和蒜瓣中。

Effects of copper on Allium sativum and accumulation of Cu~(2+) by its roots,bulbs and shoots

The effects of different concentrations of copper sulfate onroots,bulbs and shoots of Allium sativum L.,and accumulation of Cu2+ by its roots bulbs and shoots investigated in the present study.The concentrations of copper sulfate (CuSO4·5H2O) used were in the range of 10-6～10-4 mol/L.The results from this investigation indicated that the seedlings of A.sativum exposed to 10-5～10-4 mol/L Cu2+ exhibited substantial growth reduction.The leaves treated with the same Cu2+ concentrations were also obviously inhibited.A.sativum has potential ability to accumulate Cu2+ it.The Cu content in roots increased with increasing solution concentration of Cu2+.The roots in plants exposed to 10-4 mol/L Cu2+ accumulated large amounts of Cu2+.The Cu ions accumulated mainly in the roots,and small amounts of Cu2+ were translocated to the bulbs and leaves at concentration of 10-4～10-5mol/L Cu2+