Effects of exogenous silicon on maize seed germination and seedling growth

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-1). 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-1. 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-1 Si significantly stimulated seed germination and promoted the growth of maize seedlings, laying a solid foundation for subsequent maize growth.

Automated summary

This study investigated the effects of silicon on maize seed germination and seedling growth, finding that a concentration of 15 g.L-1 significantly stimulated seed germination and promoted seedling growth. Silicon treatment also increased chlorophyll content, osmotic material accumulation, and antioxidant defense system activity, while reducing membrane system damage, reactive oxygen species contents, and stomatal aperture. These results suggest that silicon can enhance maize growth and yield, providing a solid foundation for future crop production.