您好，欢迎访问山东省农业科学院文献资源数据库平台

Physiological Mechanism of Waterlogging Stress on Yield of Waxy Maize at the Jointing Stage

文献类型： 外文期刊

作者： Zhang, Xuepeng 1 ; Huang, Chao 1 ; Meng, Ye 1 ; Liu, Xuchen 1 ; Gao, Yang 1 ; Liu, Zhandong 1 ; Ma, Shoutian 1 ;

作者机构： 1.Chinese Acad Agr Sci CAAS, Inst Farmland Irrigat Res, Minist Agr & Rural Affairs, Key Lab Crop Water Use & Regulat, Xinxiang 453002, Peoples R China

2.Shandong Acad Agr Sci, Crop Res Inst, Jinan 250100, Peoples R China

3.Field Observat & Res Stn Efficient Water Use Agr, Xinxiang 453002, Peoples R China

4.Univ Putra Malaysia, Sch Fac Engn, Selonga 43400, Malaysia

关键词： waxy maize; waterlogging threshold; source-sink; stem lodging; potential kernel number

期刊名称：PLANTS-BASEL （ 影响因子：4.5； 五年影响因子：4.8 ）

ISSN：

年卷期： 2023 年 12 卷 17 期

页码：

收录情况： SCI

摘要： In the main agricultural area for waxy maize production in China, waterlogging occurs frequently during the waxy maize jointing stage, and this causes significant yield reduction. It is very important to understand the physiological mechanism of waterlogging stress in waxy maize during the jointing stage to develop strategies against waterlogging stress. Therefore, this study set waterlogging treatments in the field for 0, 2, 4, 6, 8, and 10 days during the waxy maize jointing stage, and were labelled CK, WS2, WS4, WS6, WS8 and WS10, respectively. By analyzing the effect of waterlogging on the source, sink, and transport of photoassimilates, the physiological mechanism of waterlogging stress in the jointing stage was clarified. The results show that PEPC and POD activities and Pro content decreased significantly under WS2 compared to CK. Except for these three indicators, the Pn, GS, leaf area, kernel number, yield, and puncture strength of stems were significantly decreased under the WS4. Under the WS6, the content of MDA began to increase significantly, while almost all other physiological indices decreased significantly. Moreover, the structure of stem epidermal cells and the vascular bundle were deformed after 6 days of waterlogging. Therefore, the threshold value of waterlogging stress occured at 4 to 6 days in the jointing stage of waxy maize. Moreover, waterlogging stress at the jointing stage mainly reduces the yield by reducing the number of kernels; specifically, the kernel number decreased by 6.7-15.5% in 4-10 days of waterlogging, resulting in a decrease of 9.9-20.2% in the final yield. Thus, we have shown that waterlogging stress at the jointing stage results in the decrease of potential waxy maize kernel numbers and yield when the synthesis of sources was limited and the transport of photoassimilates was restricted.

  • 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：山东省农业科学院文献资源数据库平台

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