【摘要】 以"地豆王"菜豆品种为材料,对2~3叶期幼苗叶面分别喷施0.5、1.0、1.5、2.0mmol/L的甜菜碱溶液,在喷施后将幼苗置于41℃高温下胁迫24 h,研究外源甜菜碱对菜豆幼苗高温胁迫的生理效应。结果表明:喷施适宜浓度的甜菜碱溶液,可以降低菜豆幼苗叶片中的丙二醛含量,提高可溶性蛋白含量与SOD、POD、CAT酶活性,从而缓解高温胁迫对菜豆幼苗的伤害,其中0.5 mmol/L处理效果最明显。更多还原

【Abstract】 The study was done in order to learn the effect of GB under high temperature stress of kidney bean seedlings.Leaves with 2～3 were tested using by GB between 0.5～2.0 mmol/L were treated for 24 h under 41℃.The results showed that GB could reduce the contents of MDA and enhance the contents of soluble protein,raise the activity of SOD,POD and CAT.The heat resistence of kidney bean seedling treated with 0.5 mmol/L of GB gave the best result.更多还原