PHYTOPROTECTIVE ROLE OF HUMUS ACIDS UNDER SALINITY
2019
Kirdey, T.A. (Ivanovo State Agricultural Academy)
The investigation of phytoprotective properties of humus acids is of interest nowadays due to the growth of anthropogenic soil salinity. The influence of peat humus acids preparation on wheat (Triticum aestivum L.) tolerance to chloridic salinity was studied under vegetational experiment in aquatic culture. The plants were grown on Hoaglond nutrient mixture, the experimental variant of solution being enriched by NaCl in 25, 50, and 100 mmol/l concentrations as well as by humus acids preparation (0.005) in accordance with the experiment scheme. Under mild salinity - 25 and 50 mmol/l -the protecting function of humus acids was shown to act with Na content increase, while under 100 mmol/l the protecting role of humus acids is caused by the decrease of sodium ions contents in plants shoots. Sodium ions accumulation in plants shoots in the presense humus acids under mild salinity (25 and 50 mmol/l of NaCl) can be used in phytoremediation.
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