摘要
通过水培对晚稻品种玉针香和湘晚籼12号在4个生育时期的3个温度环境持续6 d的镉处理,取植株的根系、茎鞘和叶片进行镉含量检测。结果发现,两个供试品种吸镉趋势一致,品种之间的镉浓度趋势为玉针香>湘晚籼12号;随着时间的延长,水稻植株的根系、茎鞘和叶片中的镉含量均增加,各个器官之间的镉浓度表现为根系>茎鞘>叶片;温度梯度之间镉浓度趋势为高温(30~35℃)>中温(22~27℃)>低温(15~20℃);各个生长发育时期的镉浓度趋势基本表现为苗期>分蘖期>孕穗期>灌浆期。
In this study, the cadmium content in root, stem and sheath and leaf of late rice varieties Yuzhenxiang and Xiangwanxian 12 was detected after continuous Cd-treatment for 6 days at 3 temperature in 4 growth stages by hydroponic experiment.The results showed that the Cd-uptaking trend of the two cultivars was the same, and the Cd concentration of the two cultivars was Yuzhenxiang > Xiangwanxian 12.With the increase of time, the cadmium content in root, stem and sheath and leaf of rice plant increased, and the cadmium concentration among organs was in the order of root > stem and sheath > leaf.The trend of cadmium concentration among temperature gradients was high temperature(30-35 ℃) > medium temperature(22-27 ℃) > low temperature(15-20 ℃).The trend of cadmium concentration in each growth stage was seedling stage > tillering stage > booting stage > filling stage.
作者
张上都
罗正良
伍祥
石邦志
彭菊
蒙秀菲
蒋慧丹
周乐良
ZHANG Shangdu;LUO Zhengliang;WU Xiang;SHI Bangzhi;PENG Ju;MENG Xiufei;JIANG Huidan;ZHOU Leliang(Long Ping Branch of Graduate School,Central South University,Changsha Hunan 410125,China;Guizhou Rice Research Institute,Guizhou Academy of Agricultural Sciences,Guiyang 550006,China;Hunan Rice Research Institute,Hunan Academy of Agricultural Sciences,Changsha 410125,China;Hunan Agricultural Biotechnology Research Institute,Hunan Academy of Agricultural Sciences,Changsha 410125,China)
出处
《种子》
北大核心
2021年第12期39-44,共6页
Seed
基金
贵州省科技支撑项目“稳定耐镉型水稻Cd吸收差异蛋白的筛选与鉴定”(黔科合支撑[2018]2295号)
“优质、抗稻瘟病水稻恢复系G 578及杂交水稻组合选育研究”(黔科合支撑[2019]2305号)
国家自然科学基金“根内外微生物协同调控水稻镉积累的机理研究”(41907032)。
关键词
水稻
生育期
温度
镉
累积效应
rice
development stage
temperature
cadmium
cumulative effect
