中国油料作物学报Issue(4)：469-475,7.DOI:10.7505/j.issn.1007-9084.2014.04.006
不同年代大豆品种根系伤流液含氮化合物的变化
Changes of nitrogen compounds in root bleeding sap of soybean cultivars released in different years
摘要
Abstract
In order to understand the changes of nitrogen compounds in root bleeding sap during the genetic improvement of soybean varieties,29 soybean varieties bred in Jilin Province during 1923 -2009 were used to measure the concentration and total amount of nitrate,amide and free amino acids (FAA)in root bleeding sap at different growth stages.The result showed that there were great amount of FAA in soybean root bleeding sap;the concentration,total amount of nitrate and FAA increased with genetic improvement of soybean cultivars,while the amide concentration decreased and the change of the total amount was not significant with year of release.Nitrogen concentration in root bleeding sap of the same soybean variety decreased with the proceeding of growth stage.The maximum total nitrogen amount was at R4 stage,the second was at R2 stage and the minimum was at R6 stage.It was concluded that genetic improvement of soybean varieties improved the level of nitrogen compounds in root bleeding sap,and nitrogen metabolism was the most vigorous at R2 stage.R2 stage was the critical period requiring extra nitrogen and the nitrogen fertilizer reasonably should be applied at this period.关键词
大豆/根系伤流液/硝态氮/铵态氮/游离氨基酸Key words
Soybean/Root bleeding sap/Nitrate/Amide/Free amino acids (FAA)分类
农业科技引用本文复制引用
张玉姣,徐克章,陈展宇,李大勇,赵新宇,张治安..不同年代大豆品种根系伤流液含氮化合物的变化[J].中国油料作物学报,2014,(4):469-475,7.基金项目
国家自然科学基金（30871547，31171459）；吉林省科技发展计划重大项目（20126033）；吉林省自然科学基金 （）
