期刊论文

中文

植物生态学报

1005-264X

2014

38

7

776-784

10.3724/SP.J.1258.2014.00073

国家自然科学基金（31071851、31101596和31372130） 国家油菜产业技术体系栽培生理岗位,国家支撑计划（2012BAD15B04和2010BAD01-B01） 湖南省高校创新平台开放基金项目（12K064和10K034） 湖南省政府专项（湘府阅2012-45号）

本校为第一机构

以甘蓝型欧洲油菜(Brassica napus)‘814’和‘湘油15’两个品种为研究对象,探寻在两个CO_2浓度(自然CO_2浓度:400 μmol·mol~(-1)和高CO_2浓度:(800±20)μmol·mol~(-1))和两个氮素水平(低氮和常氮)处理下,欧洲油菜韧皮部汁液中可溶性糖和游离氨基酸含量,以及根部干物质量和氮素累积量的变化。结果表明:1)CO_2浓度升高提高欧洲油菜韧皮部汁液可溶性糖含量,施氮条件下‘814’在抽薹期达到0.29%,‘湘油15’在盛花期达到0.25%,其含量均显著高于自然CO_2浓度处理。2)CO_2浓度对韧皮部汁液游离氨基酸含量的影响因品种而异,无论施氮与否,CO_2浓度升高使‘814’的游离氨基含量降低;而‘湘油15’CO_2...

Aims The rising global atmospheric CO2 concentration has become an indisputable fact. It will like to impose significant impacts crops. Our objective was to study the effects of elevated CO2 concentration on soluble sugars and free amino acids in the phloem sap and nitrogen（N） accumulation in roots. Methods Two oilseed rape（Brassica napus） varieties, ‘814＇ and ‘Xiangyou 15＇, were chosen in this study, and the soluble sugars and free amino acids in the phloem sap and nitrogen accumulation in roots were measured under two CO2 concentratio...