Acta Agriculturae Zhejiangensis ›› 2025, Vol. 37 ›› Issue (2): 269-277.DOI: 10.3969/j.issn.1004-1524.20240156

• Crop Science • Previous Articles     Next Articles

Effects of nano zinc oxide and nano silicon dioxide on rice seed germination

LAN Xuecheng1,2,3(), ZHAO Fengliang2,3,*(), ZHANG Guangxu1,2,3, LI Yang1,2,3, GUO Xiaohong1,*()   

  1. 1. College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing 163319, Heilongjiang, China
    2. Institute of Environment and Plant Protection, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
    3. Key Laboratory of Low Carbon Green Agriculture in Tropical China, Ministry of Agriculture and Rural Affairs, Haikou 571101, China
  • Received:2024-02-20 Online:2025-02-25 Published:2025-03-20
  • Contact: ZHAO Fengliang,GUO Xiaohong

Abstract:

In the present study, the seeds of rice cultivars Ge68you623, Wudayou No. 1, Daohuaxiang No. 2 and Kongyu131 were used as test materials, and the effects of addition of 10, 100, 200, 500, 1 000 mg·L-1 nano zinc oxide (nZnO) or nano silicon dioxide (nSiO2) on water absorption rate, germination rate, germination vigor, germination time, germination index, root length, shoot length and fresh weight of rice seeds were explored by comparison with the control without addition of nano materials. It was shown that the addition of appropriate mass concentrations of nZnO and nSiO2 could increase the water absorption rate, germination rate, germination vigor, germination index, fresh weight of shoot and root, shoot length and root length of rice seeds, and shorten the germination time, but excessive concentrations of nZnO and nSiO2 may cause a countereffect. The effect of adding the same mass concentration of nanomaterials on the seed germination varied within rice varieties. By comprehensive comparison, it was found that the response of rice variety Wudayou No 1 was obvious to the two nanomaterials. Addition of 100-200 mg·L-1 nZnO or nSiO2 was more favorable for seed germination of the tested rice varieties.

Key words: rice, nano zinc oxide, nano silicon dioxide, seed germination, germination rate

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