碳酸钠胁迫对不同玉米品种苗期生理指标的影响  

Physiological Response of Maize under Seedling Stage to Sodium Carbonate

作　　者：阮英慧[1,2] 张卓新 王丽琼[1,2] 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 [2]贵州师范学院资源环境与灾害研究所,贵州贵阳550018

出　　处：《耕作与栽培》2015年第5期1-3,共3页Tillage and Cultivation

基　　金：贵州师范学院自然科学研究基金项目<玉米耐盐碱鉴定及品种筛选>(项目批准号:13YB016);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);贵州师范学院教学质量与教学改革工程项目"贵州师范学院环境科学教学团队"(项目批准号:贵师院[2012]47号)

摘　　要：试验以筑糯2号、贵单8号、金玉819为材料,在4个浓度水平的碳酸钠溶液(0、12.5、25、37.5mmol/L)胁迫下,进行玉米苗期胁迫试验,分别测定株高、生物量、可溶性糖含量、可溶性蛋白含量、叶绿素含量等生理指标,研究不同浓度碳酸钠溶液对3个玉米品种形态生理指标的影响,旨在明确3个玉米品种对碳酸钠胁迫的适应性。结果表明:碳酸钠胁迫使苗期玉米生物量和叶绿素含量下降,而可溶性糖、可溶性蛋白含量在碳酸钠胁迫下先升高后降低,试验范围内,碳酸钠溶液浓度为25mmol/L作为玉米幼苗耐盐碱性筛选的最适浓度;3个玉米品种的耐盐碱能力顺序为:贵单8号>金玉819>筑糯2号。In order to clarify the adaptability of maize to sodium carbonate stress, three maize varieties Zhunuo No. 2; Guidan No. 8 and Jinyu 819 as test materials were used to compare the effect of four--level Na2 CO3 solution （0, 12.5, 25, 37.5mmol/ L）as stress on seedling stage of maize. Plant height, biomass, soluble sugar content, soluble protein content and chlorophyll content were determined in order to study the effects of different concentrations of Na2 CO3 solution on the physiological indexes of three maize varieties. The results were as follows： biomass and content of chlorophyll in maize were decreased, content of soluble sugar and soluble protein increased under sodium carbonate stress;The optimum solution concentration of Na2CO3 was Z5mmol/L as the salt screening of maize under seedling stage;The order of salt tolerance of three maize： Guidon 8 〉 Jinyu 819 Zhunuo 2.

关 键 词：玉米 碳酸钠胁迫 苗期 生理指标 

分 类 号：S512.1[农业科学—作物学]