College of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China.
Sci Rep. 2021 Jan 13;11(1):1014. doi: 10.1038/s41598-020-79723-y.
As the global population continues to increase, global food production needs to double by 2050 to meet the demand. Given the current status of the not expansion of cultivated land area, agronomic seedlings are complete, well-formed and strong, which is the basis of high crop yields. The aim of this experiment was to study the effects of seed germination and seedling growth in response to silicon (from water-soluble Si fertilizer). The effects of Si on the maize germination, seedling growth, chlorophyll contents, osmoprotectant contents, antioxidant enzyme activities, non-enzymatic antioxidant contents and stomatal characteristics were studied by soaking Xianyu 335 in solutions of different concentrations of Si (0, 5, 10, 15, 20, and 25 g·L). In this study, Si treatments significantly increased the seed germination and per-plant dry weight of seedlings (P < 0.05), and the optimal concentration was 15 g·L. As a result of the Si treatment of the seeds, the chlorophyll content, osmotic material accumulation and antioxidant defence system activity increased, reducing membrane system damage, reactive oxygen species contents, and stomatal aperture. The results suggested that 15 g·L Si significantly stimulated seed germination and promoted the growth of maize seedlings, laying a solid foundation for subsequent maize growth.
随着全球人口的持续增长，到 2050 年，全球粮食产量需要翻一番才能满足需求。鉴于目前耕地面积没有扩大，农业苗完全、良好且强壮，这是高作物产量的基础。本实验旨在研究硅（来自水溶性硅肥）对种子萌发和幼苗生长的影响。通过将先玉 335 浸泡在不同浓度的硅（0、5、10、15、20 和 25 g·L）溶液中，研究了硅对玉米种子萌发、幼苗生长、叶绿素含量、渗透调节物质含量、抗氧化酶活性、非酶抗氧化物质含量和气孔特征的影响。在这项研究中，硅处理显著提高了种子萌发和每株幼苗的干重（P < 0.05），最佳浓度为 15 g·L。由于种子的硅处理，叶绿素含量、渗透物质积累和抗氧化防御系统活性增加，减少了膜系统损伤、活性氧含量和气孔孔径。结果表明，15 g·L 的硅显著刺激种子萌发，促进玉米幼苗生长，为后续玉米生长奠定了坚实的基础。
