高温胁迫对玉米品种‘郑单958’幼苗生长及部分生理指标的影响  

Effects of high temperature stress on growth and some physiological indexes of seedling of Zea mays ‘Zhengdan 958’

作　　者：吴小娟 杨雯 解如琳 张晓平[1] WU Xiaojuan,YANG Wen,XIE Rulin,ZHANG Xiaoping(College of Life Sciences,Anhui Normal University,Wuhu 241000,Chin)

机构地区：[1]安徽师范大学生命科学学院,安徽芜湖241000

出　　处：《植物资源与环境学报》2018年第2期117-119,共3页Journal of Plant Resources and Environment

基　　金：国家自然科学基金资助项目(31571673)

摘　　要：高温胁迫可导致小麦（Triticum aestivum Linn.）、水稻（Oryza sativa Linn.）和玉米（Zea mays Linn.）等农作物的生长发育受阻、光合能力降低、生理活性受抑制,继而使农作物减产。玉米是中国主要粮食作物之一,高温胁迫对玉米生长和产量的影响较大。Growth status and some physiological indexes of seedling of Zea mays‘Zhengdan 958’were analyzed under high temperature（ 34 ℃,38 ℃,and 42 ℃） stress by taking（ 25±4） ℃ as the control. The results show that with increasing of treatment temperature,plant height,main root length,root/shoot ratio,and fresh weight per plant of seedling gradually decrease,while leaf area per plant gradually increases; SOD activity,POD activity,O2-·production rate,proline content and MDA content in leaf and root,and soluble protein content in leaf gradually increase,while soluble sugar content in leaf and root and soluble protein content in root gradually decrease. Overall,growth indexes and most physiological indexes of seedling under high temperature stress of 42 ℃ show significant differences（ P 〈 0. 05） with those of the control group.Seedling of Z. mays ‘Zhengdan 958 ’can enhance its tolerance under high temperature stress mainly by reducing the growth,increasing POD activity in root and proline and soluble protein contents in leaf.

关 键 词：玉米品种'郑单958’ 高温胁迫 生长指标 生理指标 

分 类 号：S513[农业科学—作物学]