چاپ مقاله 2021 Seed priming with electromagnetic field improved growth

Seed priming with electromagnetic field improved growth, nutrition and
metabolism of Salvia nemorosa L.

Abstract
In this study, the efficiencies of seed priming with electromagnetic field (0, 2, 4, and 6 mT; 30 minutes daily
for 3 days) were investigated in Salvia nemorosa. The exposure to electromagnetic filed led to significant
increases in biomass accumulation (mean=53.6 %). Electromagnetic filed treatments significantly increased
K, Ca, Mg, and Fe contents in leaves by mean 39.5 %. The electromagnetic filed treatments at all applied
intensities increased both chlorophyll and carotenoid contents. Moreover, the electromagnetic filedtreated
seedlings had significantly higher protein levels (mean=47 %) than the control. The applications of
electromagnetic filed treatments induced peroxidase activities (mean=34.5 %) in leaves. However, these
treatments reduced the activities of superoxide dismutase and catalase enzymes. The PAL activities in the
electromagnetic filed-treated seedlings were higher by 61 % over the control. With a similar trend, the
electromagnetic filed treatments promoted flavonoid accumulations. These results support this hypothesis
that the application of the electromagnetic field may improve plant growth and secondary metabolism.
Further studies, especially at molecular levels may help to elucidate the complicated involved mechanisms.