INFLUENCE OF HEAVY METALS ON THE DEVELOPMENT OF CORN VARIETIES
Ключевые слова:maize varieties, heavy metals, CdSO4, CuSO4, germination, growth, biomass.
Heavy metals are some of the most harmful chemicals in the environment today.
Today, many scientists believe that the main factor that negatively affects the plant in saline conditions is the
osmotic effect of salts. In conditions of soil salinity, the lack of plants causes dehydration of proteins, which
negatively affects the physiological and biochemical processes of plants.
Plants absorb heavy metals in different ways. It absorbs heavy metals from the soil through the roots and from
the air through the stomata of the leaves, mainly through dust.
The aim of the research is to study the influence of heavy metals on the physiological and biochemical
processes of growth and development of maize varieties.
The article presents the research results of the heavy metals influence on the elongation of seedlings and the
synthesis of photosynthetic pigments during the germination of maize varieties. It is obvious that heavy metals affect
the growth and plant development from the initial germination stage of corn kernels. The results of monitoring
various effects of heavy metals on photosynthetic pigments are also presented. In addition, the length of the abovewater and underground parts of the biomass, the ratio of dry weight to actual weight is the heavy metals effect on
plants. For example, the leaves turned dark green, the stems twisted, did not fully open and turned pink. Under the
influence of heavy metals, plant development, metabolism and photosynthesis are disrupted, as well as the normal
course of respiration and photosynthesis.
According to the results obtained, the impact of heavy metals on maize varieties significantly inhibits the
accumulation and growth of biomass. In particular, the processes of plant root growth are suppressed. Differences
in the tolerance of different varieties of heavy metals can be explained by their varietal characteristics and genetic
basis. Currently, there is a theoretical and practical interest in the identification of ion-resistant forms of heavy
metals, their ability to detect and reveal their nature, the development of ways to increase the impact and resistance
of heavy metals on plants. Formulating the results of the study, it was found that different heavy metals
concentrations (CuSO4 and CdSO4) negatively affect the growth of corn varieties. This can be seen from the tables
below (tables 1, 2, 3, 4).