安徽农业科学2011，Vol.39Issue(9)：5136-5138,5277,4.
芘胁迫对玉米幼苗生长及生理指标的影响
Effects of Pyrene Stress on Growth and Physiological Indexes of Maize ( Zea mays L. ) Seedling
摘要
Abstract
[ Objective ] The paper was to explore the effects of pyrene stress on growth and physiological indexes of maize seedling. [ Method ] The effects of different concentrations of pyrene (0, 0.5, 1.0, and 2.0 mg/L) on growth and physiological indexes of maize seedlings including Shixiang Nó. 1 (sensitive variety) and Guangtian No. 3 (tolerant variety)were studied by hydroponic experiment. [ Result ] As the concentration of prene increasing within the test concentration range, the contents of chlorophyll a and chlorophyll b in Shixiang No. 1 first increased and then decreased; relative growth yield and absolute growth rate showed the decreasing trend; MDA contents in roots and leaves showed increasing trend. Relative growth yield, absolute growth rate and chlorophyll a content in Guangtian No. 3 first increased and then decreased; chlorophyll b and MDA contents in roots showed the increasing trend; MDA contents in leaves showed the decreasing trend. Compared with control, Chlorophyll a and chlorophyll b contents of Shixiang No. 1 significantly increased under pyrene concentration of 0.5 - 1.0 mg/L, which significantly decreased as the concentration of pyrene ≥2.0 mg/L; MDA contents in roots and leaves significantly increased as the concentration of pyrene ≥ 1.0 mg/L, while relative growth yield and absolute growth rate significantly decreased. Chlorophyll a and chlorophyll b contents in Guangtian No. 3 significantly increased as the concentration of pyrene ≥ 1.0 mg/L. Pyrene concentration had significantly negative correlation with relative growth yield and absolute growth rate of Shixiang No. 1, while it had significantly positive correlation with MDA contents in roots. Pyrene concentration had significantly positive correlation with chlorophyll b and MDA contents in roots of tolerant variety Guangtian No. 3. [ Conclusion ] The study provided basis for the management measures of maize during seedling stage.关键词
玉米/芘胁迫/生长/生理指标Key words
Maize/ Pyrene stress/ Growth/ Physiological indexes分类
农业科技引用本文复制引用
陈倩婷,许超,陈旭磊,林世奇,吴启堂..芘胁迫对玉米幼苗生长及生理指标的影响[J].安徽农业科学,2011,39(9):5136-5138,5277,4.基金项目
广东省自然科学基金项目(9451064201003780) （9451064201003780）
华南农业大学校长基金项目(K09219) （K09219）
华南农业大学大学生科技创新项目(109131). （109131）
