水分胁迫对金光杏梅幼苗生长及其生理指标的影响

以金光杏梅盆栽幼苗为试材,研究了不同程度水分胁迫对其幼苗生长和生理生化各指标的影响,以期为金光杏梅的抗旱栽培提供理论依据。结果表明:随着水分胁迫程度的提高,金光杏梅幼苗株高、叶面积、叶鲜重、叶干重、茎干重、根干重、叶片相对含水量和叶绿素含量呈下降趋势;叶片电导率和丙二醛(MDA)、可溶性糖、脯氨酸含量以及POD活性都随水分胁迫程度的加重而明显升高;SOD活性在轻度和中度水分胁迫下上升,在严重水分胁迫下下降。

Effect of water stress on growth and physiological indexes in Jinguang plum seedlings

With potted Jinguang plum seedlings as material,effect of different water stress on the growth and leaf physiological indexes of seedlings were studied.The result was as follows: with the increasing of water stress,plant height,leaf area,leaf fresh weight,leaf dry weight,stem dry weight,root dry weight,relative water content and chlorophyll content in leaves were decreased;The POD activity,relative membrane permeability and the content of MDA,soluble sugar and proline in leaves were increased significantly with water stress increasing;SOD activity was tended to increase and then decreased with the increase of water stress.