2018年12月16日 星期日
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’
2018年 第27卷 第2期 页码[117-119]
Abstract

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
Key wordsZea mays ‘Zhengdan 958’; high temperature stress; growth index; physiological index
作者吴小娟, 杨雯, 解如琳, 张晓平
所在单位安徽师范大学生命科学学院, 安徽 芜湖 241000
点击量296
基金项目国家自然科学基金资助项目(31571673)