锗对水稻萌芽期的生理效应

将水稻(Oryza sativa L．)种子浸于从0到3 mg? L-1不同浓度梯度的GeO2溶液中，测量其生理指标：呼吸强度，可溶性糖含量，淀粉酶活性等。发现在浸种的前期，GeO2对以上各项生理指标均有促进作用，而随着浸种时间的延长，促进逐渐减弱并转为抑制，淀粉酶同功酶电泳则表明，植物体内复杂多样的同功酶系统在一定范围内对GeO2的毒害作用有某种程度的适应与调节能力。

The Physiological Effects of Germanium Dioxide on the Germinating Rice Seeds

Rice seeds were soaked in solutions with different concentrations of GeO2 ranged from 0 to 3.0 mg • L- l. Respiratory intensity, quantity of soluble sugar and activity of amylase were tested during germination. It was shown that CeO2 promoted all the indexes in the first stage of germination, but tile promotive effect was decreasing late and at last GeO2 became inhibitive, lsoenzyme of amylase was analyzed by PAGE. The results showed that the newly appeared isoenzyme of amylase in the germinating rice seed can releave the toxicity of GeO2.