水分胁迫对香蕉幼苗的生理效应

Some physiological response of banana seedlings to water stress

测定了10%PEG-6000胁迫后香蕉幼苗叶片的可溶性糖、可溶性蛋白、脯氨酸、丙二醛、质膜透性、超氧化物歧化酶活性和香蕉根系活力的变化情况。结果显示,胁迫后3 d,可溶性糖、脯氨酸、丙二醛、根系活力比对照分别提高48.74%、100.55%、58.36%和84.50%,可作为下一步香蕉抗旱调节物质的筛选指标。

Brazil banana seedlings were cultured under 10% PEG-6000 water conditions to observe their changes of leaf soluble sugar, soluble protein, proline, MDA, membrane permeability, SOD and root activity. It was found that water stress improved soluble sugar, praline, MDA and root activity by 48.74%,100.55%,58.36% and 84.50%. These physiological indexes could be used to select banana drought resistance regulating materials.