贵州喀斯特山区干旱对玉米苗期生理特性的影响  

The effect of drought on physiological indexes of maize seedling growth in Guizhou karst mountainous areas

作　　者：阮英慧[1,2] 王杰[1] 韦仕甜 张其芳[1,2] 罗绪强[1,2] 

机构地区：[1]贵州师范学院地理与旅游学院,贵州贵阳550018 [2]贵州师范学院资源环境与灾害研究所,贵州贵阳550018

出　　处：《贵州师范学院学报》2017年第9期38-41,共4页Journal of Guizhou Education University

基　　金：贵州省高等学校教学质量与教学改革工程项目"贵州省环境科学教学团队"(项目批准号:黔教高[2012]426号);国家自然科学基金项目"退化喀斯特森林群落植物生理生态响应的同位素示踪研究"(项目批准号:41563007);贵州省优秀科技教育人才省长资金项目"典型喀斯特植被退化群落主要优势植物养分化学计量学研究"(项目批准号:黔省专合字(2012)80号)

摘　　要：为探讨喀斯特山区干旱对玉米苗期生理特性的影响,以贵单8号、筑糯2号、金玉819共3个贵州玉米品种为材料,采用人工控水法进行盆栽试验,分别测定其株高、叶面积、根冠比、可溶性糖、可溶性蛋白、叶绿素等形态和生理指标。结果表明:玉米苗期的株高、叶面积和叶绿素含量均随干旱胁迫程度加深而逐渐下降;根冠比和可溶性糖含量随胁迫程度加深而逐渐上升;可溶性蛋白含量呈先升高后降低的趋势,中度胁迫下可溶性蛋白含量显著低于对照。This experiment was developed by three maize varieties of Guizhou,namely,Gui Dan No. 8,Zhunuo No. 2 and Jinyu No. 819 for materials. Maize were pot planted by controlling the water content. Root length,plant height,the content of soluble sugar,soluble protein,chlorophyll are determined. The purpose is to explore the different degrees of drought stress on physiological indexes. The study shows that the height,chlorophyll contents,leaf areas of maize are reduced with drought deteriorating; the root-top ratio and soluble sugar content increase with the deterioration of drought; the soluble protein shows a trend of increasing before decreasing,and with moderate draught,the soluble protein is significantly lower than a control.

关 键 词：干旱胁迫 玉米 苗期 生理指标 

分 类 号：X171.3[环境科学与工程—环境科学]