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Grain number responses to pre-anthesis dry matter and nitrogen in improving wheat yield in the Huang-Huai Plain

Scientific reports, 2018-05, Vol.8 (1), p.7126-10, Article 7126 [Peer Reviewed Journal]

2018. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;The Author(s) 2018 ;ISSN: 2045-2322 ;EISSN: 2045-2322 ;DOI: 10.1038/s41598-018-25608-0 ;PMID: 29740083

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  • Title:
    Grain number responses to pre-anthesis dry matter and nitrogen in improving wheat yield in the Huang-Huai Plain
  • Author: Duan, Jianzhao ; Wu, Yapeng ; Zhou, Yi ; Ren, Xingxu ; Shao, Yunhui ; Feng, Wei ; Zhu, Yunji ; Wang, Yonghua ; Guo, Tiancai
  • Subjects: Dry matter ; Nitrogen ; Plant growth
  • Is Part Of: Scientific reports, 2018-05, Vol.8 (1), p.7126-10, Article 7126
  • Description: Wheat yield components vary between different ecological regions and yield levels. Grain number responses to pre-anthesis dry matter (DM) and nitrogen (N) in increasing yield were always investigated in spike organs, neglecting the effect of non-spike organ nutrition or overall distribution. This paper determined the relationships between grain number and pre-anthesis DM and N in spike and non-spike organs under different yield levels, with using two sorts of field experiments (different water-nitrogen modes and cultivation management patterns) from 2012-2015 in Huang-Huai plain. The results indicated that improving yield under yield of <7500 kg ha depends on increasing grain number per spike (GNs) or spike number (SN) or both, increased yield under higher yield of >7500 kg ha mainly depends on GNs. GNs showed significant positive relationships with above-ground DM accumulation from jointing to anthesis under high or low yield levels. Rapid DM growth in spring achieves higher GNs. Spike and non-spike DM and N contents both demonstrated strong positive relationships with GNs, spike DM distribution also shows a positive correlation, but spike N distribution ratio show negatively correlation with GNs. Improved N distribution in non-spike organs and DM partition in spike organs conduce to increasing GNs.
  • Publisher: England: Nature Publishing Group
  • Language: English
  • Identifier: ISSN: 2045-2322
    EISSN: 2045-2322
    DOI: 10.1038/s41598-018-25608-0
    PMID: 29740083
  • Source: PubMed Central
    Directory of Open Access Journals
    ProQuest Central
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