ЭлБиб

14.02.2018

Качество семенного потомства ячменя сорта «Зазерский 85» выросшего на почвах загрязненных нитратом цинка

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обменную кислотность, низкую емкость поглощения и степень насыщенности основаниями [1,

3, 4].

Annotation:

The growth of heavy metal concentrations in soils of agrarian ecosystems leads to a decrease in

yield and deterioration in the quality of agricultural products, a decrease in the microbiological

activity of soils [1, 2]. A special place among heavy metals is zinc, which is a necessary

microelement for plants and at the same time a very toxic substance that actively accumulates in

the environment. And if the direct influence of increased zinc concentrations in soils on plants has

already been sufficiently studied, then little is known about the consequences of such an effect on

the seed progeny of plants. This study showed that large concentrations of zinc in the soil

(exceeding the MAC values by 10 - 30 times) are able to negatively affect the seed progeny of

barley. The frequency of cytogenetic disorders in the root meristem of seedlings of seeds

increases, the germination rate decreases. But since zinc is necessary for the normal development

of plants with a microelement, its relatively low concentrations in the soil (exceeding the MPC

values 1 - 2 times) may contribute to an increase in the germination of seeds. The magnitude of

the influence of zinc on the quality of seed progeny depends on the type and agrochemical

properties of the soils. On sod-podzolic soils, cytogenetic effects and changes in the germination of

seed offspring occur at lower zinc concentrations than on chernozem and peat soils. This is due to

the fact that sod-podzolic soils have a lower humus content, a significant exchange acidity, a low

absorption capacity and a degree of saturation with bases [1, 3, 4].

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