The effect of trace element zinc on growth and aminoacid composition of Amaranthus L. plants

The role of trace element zinc in increasing stress resistance of Amaranthus L. plants under extremal conditions of growth: hypothermia, excessive moisture content and atmospheric drought. It has been found that zinc had a growth stimulating activity under conditions of hypothermia and wet. As a result of pre-sowing treatment by zinc more stressful aminoacids: glycine, proline, alanine and glutamic acid is synthesized in the leaves. Accumulation of hydrophilic aminoacids (osmotically active substances) helps to create a comfort environment for the protein macromolecules and retention of water in cells under onditions of drought.