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Shubiao Wu

Germination performance of maize seed presoaked with biogas slurry from anaerobic digestion of maize straw

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  • Wei Li, China Agricultural University
  • ,
  • Jiaxi Li, China Agricultural University
  • ,
  • Shubiao Wu
  • Renjie Dong, China Agricultural University

In this study, the induced seed germination and seedling growth of maize seeds presoaked with the liquid part of digestate, i.e., biogas slurry (BS) were investigated. The mobilization of storage nutrients and relevant hydrolase activity were studied. Although the final germination rates were similar, the obtained seedlings from presoaking treatments with BS had heavier wet weights and longer roots than those from the control, and more seminal roots were developed. Presoaking with BS promoted the mobilization of storage nutrients by improving hydrolase activity. The amylase activities increased significantly by 3.9%-20.0%. The protease activities increased significantly by 19.9%-31.8%. Correspondingly, more soluble sugar was detected. The synthesis of soluble protein was also promoted. For presoaking treatments with BS, superoxide dismutase activities increased by 7.8%-13.0%, but catalase and peroxidase activities varied. Overall, seedlings from maize seeds presoaked with BS showed better growth potential and physiological properties compared with those from seed presoaked with distilled water. However, further investigations are needed because of the complicated mechanism of seed germination and the complex composition of BS.

TidsskriftInternational Agricultural Engineering Journal
Sider (fra-til)12-20
Antal sider9
StatusUdgivet - 2014
Eksternt udgivetJa

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