Rácz Dalma, Szőke Lóránt, Tóth Brigitta, Kovács Béla, Horváth Éva, Zagyi Péter, Duzs László, Széles Adrienn
Faculty of Agricultural and Food Sciences and Environmental Management, Institute of Land Use, Engineering and Precision Farming Technology, University of Debrecen, 138 Böszörményi St., 4032 Debrecen, Hungary.
Faculty of Agricultural and Food Sciences and Environmental Management, Institute of Food Science, University of Debrecen, 138 Böszörményi St., 4032 Debrecen, Hungary.
Plants (Basel). 2021 Nov 10;10(11):2426. doi: 10.3390/plants10112426.
Nutrient stress has been known as the main limiting factor for maize growth and yield. Nitrapyrin, as a nitrification inhibitor-which reduces nitrogen loss-and foliar fertilizer treatments have been successfully used to enhance the efficiency of nutrient utilization, however, the impacts of these two technologies on physiological development, enzymatic responses, and productivity of maize are poorly studied. In this paper, the concentration of each stress indicator, such as contents of proline, malondialdehyde (MDA), relative chlorophyll, photosynthetic pigments, and the activity of superoxide dismutase (SOD) were measured in maize leaf tissues. In addition, biomass growth, as well as quantitative and qualitative parameters of yield production were examined. Results confirm the enhancing impact of nitrapyrin on the nitrogen use of maize. Furthermore, lower activity of proline, MDA, SOD, as well as higher photosynthetic activity were shown in maize with a more favorable nutrient supply due to nitrapyrin and foliar fertilizer treatments. The obtained findings draw attention to the future practical relevance of these technologies that can be implemented to enhance the physiological development and productivity of maize. However, this paper also highlights the importance of irrigation, as nutrient uptake from soil by the crops decreases during periods of drought.
营养胁迫一直被认为是玉米生长和产量的主要限制因素。作为一种减少氮素损失的硝化抑制剂，抑芽丹和叶面肥料处理已成功用于提高养分利用效率，然而，这两种技术对玉米生理发育、酶促反应和生产力的影响却鲜有研究。本文测定了玉米叶片组织中各胁迫指标的浓度，如脯氨酸、丙二醛（MDA）含量、相对叶绿素、光合色素以及超氧化物歧化酶（SOD）活性。此外，还检测了生物量增长以及产量的数量和质量参数。结果证实了抑芽丹对玉米氮素利用的增强作用。此外，由于抑芽丹和叶面肥料处理，养分供应更有利的玉米中脯氨酸、MDA、SOD的活性较低，光合活性较高。这些研究结果提醒人们关注这些技术在未来的实际应用价值，它们可用于促进玉米的生理发育和提高生产力。然而，本文也强调了灌溉的重要性，因为干旱期间作物从土壤中吸收的养分减少。
