期刊论文

Key Growth Stage of Cd Accumulation in Brown Rice Through a Hydroponic Experiment with Cd Stress

中文

中国农业科学

0578-1752

2018

51

23

4424-4433

10.3864/j.issn.0578-1752.2018.23.003

2016YFD0800705:国家重点研发计划 41501344:国家自然科学基金 2006180:湖南省重点学科建设项目 20183022:研究生科技创新项目

本校为第一机构

【目的】探究水稻不同生育时期Cd胁迫对水稻成熟期糙米Cd累积的影响,明确糙米Cd累积关键生育时期,以期适时采取阻控措施降低糙米Cd含量,为水稻安全生产提供理论参考。【方法】以水稻品种湘晚籼13号(晚稻品种)为研究对象,采用水培试验,共设计7个添加外源Cd处理,即CG(全生育时期Cd胁迫,102 d)、 TS(分蘖期Cd胁迫,15 d)、JS(拔节期Cd胁迫,15 d)、BS(孕穗期Cd胁迫,21 d)、FS(灌浆期Cd胁迫, 18 d)、DS(腊熟期Cd胁迫,15 d)、MS(成熟期Cd胁迫,18 d),以全生育时期无Cd胁迫作为空白对照(CK),每个处理重复3次。各处理外源Cd胁迫浓度相同,均为20 μg·L~(-1)。水培试验于2017年7月23日开始,在湖南省长沙市中...

【Objective】The objectives of this study were to explore the effects of Cd stress on Cd accumulation in brown rice at different growth stages (tillering stage, jointing stage, booting stage, filling stage, dough stage, and maturing stage) of rice plants, to clear and definite the key growth stages of rice plants for Cd accumulating in brown rice, so as to provide directions of rice safety production by taking suitable measures timely for reducing Cd contents in brown rice. 【Method】 Taking Xiangwanxian 13 (a late rice variety) as the studied ...