Nawaz Fahim, Ashraf M Y, Ahmad R, Waraich E A, Shabbir R N, Bukhari M A
Department of Crop Physiology, University of Agriculture, Faisalabad, Pakistan.
Nuclear Institute for Agriculture and Biology (NIAB), Faisalabad, Pakistan.
Food Chem. 2015 May 15;175:350-7. doi: 10.1016/j.foodchem.2014.11.147. Epub 2014 Dec 3.
The paper mainly reported the effects of exogenous selenium (Se) supply (Se seed priming, Se fertigation and Se foliar spray) on physiological and antioxidant system of wheat aiming to clarify its effect on yield and nutritional quality of wheat under both normal and water deficit conditions. Water stress markedly decreased the grain Se, iron (Fe), phosphorous (P), zinc (Zn) and magnesium (Mg) contents. Supplemental Se (Na2SeO4) improved the yield and quality of water stressed plants due to enhancement in the production of osmoprotectants and increased activity of antioxidant enzymes. The foliar spray of Se was more effective than Se fertigation and Se seed treatment. To the best of our knowledge, this is the first elaborate study that involved various Se application methods to evaluate the efficiency of Se supply to plants that would be crucial to develop better understanding of Se translocation and accumulation within crop plants under drought stress.
该论文主要报道了外源硒(Se)供应(硒种子引发、硒滴灌和硒叶面喷施)对小麦生理和抗氧化系统的影响,旨在阐明其在正常和水分亏缺条件下对小麦产量和营养品质的影响。水分胁迫显著降低了籽粒中硒、铁(Fe)、磷(P)、锌(Zn)和镁(Mg)的含量。补充硒(Na2SeO4)由于渗透保护剂产量的提高和抗氧化酶活性的增加,提高了水分胁迫植株的产量和品质。硒叶面喷施比硒滴灌和硒种子处理更有效。据我们所知,这是第一项详细研究,涉及各种硒施用方法来评估向植物供应硒的效率,这对于更好地理解干旱胁迫下硒在作物植株内的转运和积累至关重要。