赤霉素处理后燕麦膜透性在低温条件下的变化

Membrane Permeability of Oats under Cold Condition after Gibberelic Acid Treatment

采用电导法对赤霉素（ＧＡ３）处理后燕麦膜透性的变化情况进行研究，对１０个燕麦品种（系）抗寒性进行比较。两种浓度ＧＡ３处理其电解质透出率相对较低。０ｍｇ／Ｌ浓度与１００ｍｇ／Ｌ、２５０ｍｇ／Ｌ浓度处理间差异极显著。ＧＡ３使燕麦叶片电解质透出率降低，对燕麦膜透性有稳定作用。不同燕麦品种（系）对ＧＡ３的反应敏感程度不同。本次实验中ＧＡ３作用的持续时间较长。

Membrane permeability under cold condition of oats(Avena sativa L.),which were treated with Gibberelic acid(GA3),was measured by electrical conductivity method `and cold hardness was compared among 10 varieties.The electrolyte leakage of treated oats was relatively lower.In comparing the effects of GA3 spraying ,we found there were significant differences(P<0.01) between both 0mg/L and 100mg/L,and 0mg/L and 250mg/L,The reactions of the varieties were varied to GA3 spraying.GA3 spraying decrease electrolyte leakage under low temperature,which implied that the membrane permeability was more steadier.The action of GA3 on oats had a longer duration in the experiment.