ABSTRACT:
 
Industry development implicates growing production and consumption of heavy metals and metalloids. This fact increases their concentrations in environment, which is significant hygienic and ecological problem, especially rising up in industrial countries. This project is focused on importance of heterogeneous components in environment, sources of contamination and risk constituents relate to potatoes. In conclusion are shown possibilities how to reduce intrusion of heterogeneous components into food chain, and where to focus the research of this topic.

Importance of potatoes to nourishment is very well known. Although there are various recommendations, we suppose average potatoes consumption 85 kg per person a year. It means to grow 1,25 million tons of quality potatoes. High quality is necessary because most of the production (after selecting or brushing and washing) is being delivered to the consumers as quality as grown, that is, with skin. There are many causes which decrease quality of potato bulbs, and it is difficult to sort them relate to their severity. This problem, however, is not too associated with heterogeneous components, though some further procedures, such as peeling, have an influence on content of these components.

In this project, there are shown some recommendations and measures, which are necessary to accept in order to decrease the content of risk constituents in food in general, paying attention to potatoes - better to say potato bulbs and products made of them, and to decrease penetration of heterogeneous constituents into the environment and their impact on population. For instance:

• Sufficient monitoring of contents of heterogeneous components in basic environmental compounds (atmosphere, water, soil) and imported foods,
• To grow potatoes on non-contaminated lands only,
• To support financially research focused on penetration of heterogeneous components into potato bulbs, putting great emphasis on mechanism of tolerance between varieties,
• In areas, where is higher occurrence of heterogeneous components and in spite of this fact potatoes are grown there, to select such varieties on which these components have minimal effects,
• To recognize a reaction of particular varieties during penetration of these components into the potato bulbs,
• To explain effects of risk components in soil, when their concentrations are under and over limits, on physiological behavior of potato plants and their bulb yields,
• To determine embedded portions of heterogeneous components in potato plant tops and bulbs on condition different concentrations of these components in soil,
• To establish concentration heterogeneous components limits in soil for growing non-contaminated bulbs,
• To determine whether are or not these components presented after peeling, boiling and in alimentary products,
• To determine influence of heterogeneous components on yield and quality of potato bulbs in different climatic regions showing different fall-out of these components.