Crops ›› 2023, Vol. 39 ›› Issue (1): 152-157.doi: 10.16035/j.issn.1001-7283.2023.01.022

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Effects of Different Forms Selenium and Dosage on Foxtail Millet Growth and Physiology at Seedling Stage

Bian Shuhui(), Xing Guofang(), Liang Xin, Zhang Shuwei, Wang Jianing, Ye Haoyu   

  1. College of Agronomy, Shanxi Agricultural University, Taigu 030800, Shanxi, China
  • Received:2021-11-02 Revised:2021-12-23 Online:2023-02-15 Published:2023-02-22

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Abstract:

In order to explore the effects of different forms selenium and dosage on foxtail millet growth and resistance, 0.0, 0.1, 0.5, 1.0 and 10.0mmol/L sodium selenite and nano selenium were selected to carry out hydroponic culture experiment on foxtail millet, and to explore the effects of different forms and concentrations of selenium on plant height, stem diameter, root system, selenium content and enzyme activity of foxtail millet. The results showed that, with the increase of selenium concentration, the plant height increased first and then decreased. The effects of sodium selenite on stem diameter showed a parabola trend, and nano selenium had a significant inhibitory effects on stem diameter. The effects of sodium selenite on root length and root shoot ratio increased first and then decreased. Low concentration of nano selenium had no significant effects on root length, while high concentration of nano selenium had a significant inhibitory effects on root length. Nano selenium significantly inhibited the root shoot ratio of foxtail millet. Both forms of selenium could increase the selenium content of foxtail millet. The two forms and concentrations of selenium had significant effects on SOD, CAT activities and protein content, but had no significant effects on POD activity. Combined with the experimental results of Circos-string diagram, plant height, stem diameter, root, selenium content and enzyme activity, it was concluded that spraying 0.1mmol/L nano-selenium solution significantly improved foxtail millet growth, selenium content and enzyme activity, and was suitable for the application in foxtail millet planting.

Key words: Sodium selenite, Nano selenium, Selenium content, Enzyme activity, Foxtail millet

Fig.1

Effects of different forms selenium and dosage on plant height and stem diameter of foxtail millet Different lowercase and capital letters indicate significant difference between treatments at different concentrations of sodium selenite and nano selenium (P < 0.05), respectively, the same below"

Fig.2

Effects of different forms selenium and dosage on the root length and root shoot ratio of foxtail millet"

Fig.3

Effects of different forms selenium and dosage on selenium content of foxtail millet"

Fig.4

Effects of different forms selenium and dosage on enzyme activity and protein content of foxtail millet roots"

Fig.5

Correlation between indicators under sodium selenite and nano selenium treatment PH: plant height; SD: stem diameter; RL: root length; R/S: root/shoot; SC: selenium content; PC: protein content.“*”indicate significant correlation at P < 0.05 level. The same below"

Fig.6

Treatment and interindex transfer relationship"

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