玉米苗期耐碱性鉴定方法研究  

Study on Appraised Methods of Alkali Tolerance of Maize at the Stage of Seedling

作　　者：崔美燕[1] 高树仁[1] 付艳 刘文研[1] 蔡鑫鑫[1] 李帅[1] 

机构地区：[1]黑龙江八一农垦大学植物科技学院,大庆163319 [2]黑龙江农垦农业职业技术学院

出　　处：《黑龙江八一农垦大学学报》2008年第5期12-16,共5页journal of heilongjiang bayi agricultural university

基　　金：黑龙江省教育厅科研项目(11521196);农业部寒地作物生理生态重点开放实验室课题

摘　　要：在三叶一心期,用一定浓度梯度的Na2CO3溶液(5～25mmol·L-1)对玉米幼苗进行胁迫处理,观察其生长情况,7d后测定地上部分株高、鲜重、干重等生理指标。研究表明,各项生理指标均随Na2CO3溶液浓度的增加而降低,并在各碱浓度间、自交系间达极显著差异。综合苗情及各生理指标的变化,初步确定可以将25mmol·L-1Na2CO3溶液作为玉米苗期耐碱性筛选的理想浓度,将该浓度下的苗情及株高、鲜重、干重及含水量变化率作为玉米苗期耐碱性筛选的鉴定指标。The physiological indexes such as height, fresh weight, dry weight and water content of seedlings were measured after seven days under treatment of different concentrations （5 -25 mmol ·L^-1） of Na2CO3 in this study. The study showed that every physiological index degrade with the increasing of Na2CO3 content, different contents of Na2CO3 and different inbred lines were different. The concentration of 25 mmol·L^-1 of NaECO3 could be used as ideal concentration, the appearance, height, fresh weight, dry weight and water content under the concentration of 25mmol·L^-1 of Na2CO3 could be the appraised indexes of alkali tolerance at the stage of seedling.

关 键 词：玉米 NA2CO3 耐碱性 

分 类 号：S513[农业科学—作物学] Q945.78[生物学—植物学]