Effect of priming with chitosan nanoparticles and potassium nitrate on biochemical content of quinoa seedlings of Giza 1 cultivar under salinity stress

A Mansouri | Heshmat Omidi

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URL :   http://research.shahed.ac.ir/WSR/WebPages/Report/PaperView.aspx?PaperID=137581
Date :  2021/06/12
Publish in :    فيزيولوژي گياهان زراعي

Link :  http://cpj.iauahvaz.ac.ir/article-1-1487-fa.html
Keywords :A

Abstract :

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Salinity is one of the most important environmental stresses and causes a significant reduction in yield in plants. In order to investigate the effect of treatment with chitosan nanoparticles and potassium nitrate and salinity stress on biochemical compounds of quinoa in Hoagland growth medium, a factorial experiment was conducted in a completely randomized design in four replicate the research greenhouse of Shahed University of Tehran. Priming treatment at two levels including treatment A (solution containing 0.01 w.v by volume of chitosan nanoparticles plus 0.5 w.v by volume of potassium nitrate) and treatment B (solution containing 0.02 w.v by volume of chitosan nanoparticles plus 0.2 w.v by w of potassium nitrate) and salinity stress factor at Five levels (Hoagland solution salinity 2 dS/m as control, 8, 12, 16 and 20 dS/m). The results showed that the effect of salinity on all studied traits except seedling dry matter and potassium content was significant. Also, the effect of treatment on all studied traits except potassium content was positive and significant. The effect of treatment (A) increased seedling dry matter compared to the other treatment by 26.7. Application of treatment (A) compared to treatment (B) at salinity of 20 dS/m increases proline (11.8), soluble sugar (20.6) and catalase content (30.4) and decreases sodium ( 34.2) and a decrease in the ratio of sodium to potassium (27.8). In general, it can be stated that the use of a solution containing 0.01 wt by volume of chitosan nanoparticles plus 0.5 wt by volume of potassium nitrate in quinoa seed priming can improve the biochemical content of quinoa seedlings under salinity stress. Keywords: Proline,