Maignan Victor, Géliot Patrick, Avice Jean-Christophe
Normandie Univ, UNICAEN, INRAE, UMR EVA, SFR Normandie Végétal FED4277, Esplanade de la Paix, 14032 Caen, France.
Via Végétale, 44430 Le Loroux-Bottereau, France.
Plants (Basel). 2021 Feb 28;10(3):456. doi: 10.3390/plants10030456.
Wheat is one of the most important cereals for human nutrition, but nitrogen (N) losses during its cultivation cause economic problems and environmental risks. In order to improve N use efficiency (NUE), biostimulants are increasingly used. The present study aimed to evaluate the effects of Glutacetine, a biostimulant sprayed at 5 L ha in combination with fertilizers (urea or urea ammonium nitrate (UAN)), on N-related traits, grain yield components, and the grain quality of winter bread wheat grown at three field sites in Normandy (France). Glutacetine improved grain yield via a significant increase in the grain number per spike and per m, which also enhanced the thousand grain weight, especially with urea. The total N in grains and the NUE tended to increase in response to Glutacetine, irrespective of the site or the form of N fertilizer. Depending on the site, spraying Glutacetine can also induce changes in the grain ionome (analyzed by X-ray fluorescence), with a reduction in P content observed (site 2 under urea nutrition) or an increase in Mn content (site 3 under UAN nutrition). These results provide a roadmap for utilizing Glutacetine biostimulant to enhance wheat production and flour quality in a temperate climate.
小麦是人类营养最重要的谷物之一，但在其种植过程中的氮（N）损失会引发经济问题和环境风险。为了提高氮素利用效率（NUE），生物刺激剂的使用越来越广泛。本研究旨在评估在法国诺曼底三个田间地点种植的冬小麦上，以5升/公顷的用量与肥料（尿素或尿素硝酸铵（UAN））混合喷施的生物刺激剂Glutacetine对与氮相关的性状、籽粒产量构成因素和籽粒品质的影响。Glutacetine通过显著增加每穗和每平方米的籽粒数提高了籽粒产量，这也提高了千粒重，尤其是与尿素混合使用时。籽粒中的总氮量和氮素利用效率往往会因Glutacetine而增加，无论种植地点或氮肥形式如何。根据种植地点的不同，喷施Glutacetine还可能引起籽粒离子组（通过X射线荧光分析）的变化，观察到磷含量降低（尿素营养下的地点2）或锰含量增加（UAN营养下的地点3）。这些结果为利用Glutacetine生物刺激剂提高温带气候下小麦产量和面粉品质提供了路线图。
