土壤干旱对玉米叶片膜透性及叶绿体超微结构的影响-吉林农业大学.PDFVIP

DO I :10.13327/j .j j au.2002.03.005 吉林农业大学学报　2002, 24 (3 ):17 ～23 Journal of J ilin Agricultural University 1, 2 1 1 2 于海秋 , 徐克章 , 武志海 , 沈秀瑛 (1.吉林农业大学农学院, 吉林长春130118;2.沈阳农业大学农学院, 辽宁 沈阳110161) 　:玉米大喇叭口期土壤干旱可使叶片相对含 量下降, 质膜相对透性和丙二醛含量增加。 电镜观察发 现:叶肉细胞叶绿体在形态上膨胀变圆, 脂类小滴增多增大;叶绿体被膜逐渐膨散乃至断裂, 叶绿体片层结构 由排列整齐变为混乱, 且间质片层对干旱胁迫较敏感。 抗旱性强的品种在干旱胁迫下, 受到上述变化影响较 小。 复 后, 抗旱性强的品种较易恢复到正常状态。 :玉米;土壤干旱;质膜相对透性;丙二醛含量;超微结构 :S513.01　　　:A 　　　:1000-5684 (2002)03-0017-07 Effects of Soil Drought on Membrane Permeability and Chloroplast Ultrastructure in Maize Leaves 1, 2 1 1 2 YU Hai-qiu , XU Ke-zhang , WU Zhi-hai , SHEN Xiu-ying (1.College of Agronomy , J ilin Agricultural University , Changchun, J ilin 130118, China ;2.College of Agronomy , Sheny ang Agricultural University , Sheny ang , Liaoning 110161, China ) Abstract:Soi drought during ma e tatra stage of maize resu ted in the decrease of re ative water content and the increase of membrane conductivity and MDA content in eaf ce s.Observation through e ectron microscope revea ed that the ch orop asts became round in shape, and fat drop ets in eaf ce s increased in number and en arged in size.The ch orop ast membrane was injured serious y as the drought deve - oped.The ch orop ast ame ae arranged disorder y as the stress ast, and the stroma ame ae was a so sensitive to drought.The resistant variety of maize was injured mi d y at the same stress eve and easi y returned to norma stage after reirrigation. Key ords:maize;soi drought;membrane conductivity;MDA contents;u trastructure of ch orop ast