铜对黄瓜和萝卜种子萌发和生长的影响

The Effect of Cu^(2+) on Seed Sprouts and Seedlings Growth of Cucumber and Radish

利用Cu2+对黄瓜、萝卜种子进行处理,观察种子的萌发率以及萌发后根芽的生长情况。结果表明:不同浓度的Cu2+对黄瓜、萝卜种子的发芽率、根长、幼苗生长具有不同的作用。低浓度Cu2+促进种子萌发,高浓度Cu2+抑制种子萌发。Cu2+对黄瓜、萝卜根长的影响表现为先促进后抑制,对幼苗芽长的影响不大。Cu2+对黄瓜、萝卜根的影响要显著高于对芽的影响。黄瓜和萝卜种子对Cu2+毒害具有较强的耐性,并且萝卜的耐性要强于黄瓜。

To observed the germination rate and growth of root and sprout, cucumber and radish were treated with Cu2＋. The results showed ： different concentrations of Cu2 ＋ have different impact on cucumber and radish seed germination, root length and seedling growth. Low concentrations of Cu2＋ promoted seed germination, but high concentrations of Cu2＋ inhibited seed germination. The effect on root length of cucumber and radish repre- sented that first promote and late inhibit, and the effect on seedlings sprout length was little. The effect of Cu2＋ on root of cucumber and radish were h!gher than on sprout. The seed of cucumber and radish have strong en- durance to Cu2 ＋ , and the endurance of radish was stronger than cucumber.