您好，欢迎访问黑龙江省农业科学院 机构知识库！
黑龙江省农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Chilling at grain filling stage reduced rice grain protein content: An experimental and modeling study

文献类型： 外文期刊

作者： Ma, Haoyu 1 ; Shi, Yanying 1 ; Li, Tao 2 ; Wang, Lizhi 3 ; Zhang, Xijuan 3 ; Yang, Xianli 3 ; Jiang, Shukun 3 ; Cui, Shize 3 ; Guo, Erjing 1 ; Guan, Kaixin 1 ; Zhou, Litao 1 ; Deng, Yuhan 1 ; Liu, Runze 1 ; Zhang, Wenmeng 1 ; Zhao, Yuanbo 1 ; Zheng, Xinyi 1 ; Li, Mingzhe 1 ; Yang, Chenlong 1 ; Yang, Xiaoguang 1 ;

作者机构： 1.China Agr Univ, Coll Resources & Environm Sci, Beijing 100193, Peoples R China

2.Int Rice Res Inst, Los Banos, Philippines

3.Heilongjiang Acad Agr Sci, Cultivat & Farming Res Inst, Harbin 150086, Peoples R China

关键词： Rice; Chilling stress; Grain filling stage; Grain protein; Nitrogen accumulation; Crop model

期刊名称：ENVIRONMENTAL AND EXPERIMENTAL BOTANY （ 影响因子：4.5； 五年影响因子：5.2 ）

ISSN： 0098-8472

年卷期： 2024 年 226 卷

页码：

收录情况： SCI

摘要： Climate change has increased the trend in the intensity of global extreme weather events, including chilling. Nitrogen is one of the most essential nutrients for rice growth and development. Chilling will limit the uptake and translocation of nitrogen and the formation of grain protein in rice plants. The experiment conducted in the climate chamber with chilling stress applied at the grain filling stage revealed different effects on protein concentration in aboveground organs and caused asymmetry in grain protein contents (GPC) and grain protein yield (GPY). Chilling stress applied during the grain filling stage reduced the accumulation rate of rice grain protein by inhibiting the nitrogen uptake and the translocation from vegetative organs to grains, which resulted in a 35 % decrease in grain nitrogen accumulation and a 92 % increase in vegetative organs during grain filling. Consequently, the average nitrogen harvest index is reduced by 12 %. Nitrogen accumulation was severely affected when cooling degree days (CDD) >= 70 degrees C days. As the chilling intensity increased, the decrease of GPY was more significant than that of GPC. Moreover, we improved the grain temperature-nitrogen uptake function under chilling stress based on the relationship between CDD and the reduction in rice grains. By comparing the improved function and the modules in the existing crop model using the datasets from open field and artificial control experiments, we demonstrated that the current research on quantifying rice nitrogen uptake at extreme temperature stress needed further improvement. The effects of environmental stress on grain nitrogen accumulation are complex. Future studies should pay more attention to the ability of extreme temperature stress to affect nitrogen accumulation in various rice organs.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：黑龙江省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台