Streltsova T.A. Natural virus-free Grounds of the Altai mountains as longevity’s bioresource of valuable varieties and problems of potato degeneration

Gorno-Altaisk State University, Gorno-Altaisk, Russia

Abstract

The article discussed research materials of long-term studies of largescale ecological and geographical experiments in the harsh conditions of
the Altai Mountains. In these experiments first time has been set with use
of simultaneous environmental testing extensive collections of potato genotypes in different conditions of altitudinal zones (highlands, midlands and
low mountains). The high significance these results for the Republic of Altai, where the potato is one of the most important food crops, and there is a
need for the introduction and establishment of highly adaptive varieties for
cultivation in various and contrasting environmental conditions. The paper
examined the nature of the variability of varieties of quantitative traits under the influence of various environmental factors, and extent to biological
resource of potatoes in different ecological zones of the Altai Mountains is
estimated through consideration of the resistance to infection and variability of varieties. It was found that the environmental conditions of virus-free
areas of the Altai Mountains with a harsh climate with favorable climatic
conditions for growing healthy (free of plant pathogens) potatoes.
Key words: adaptability, biological resources, variation, highlands, variability, potatoes, low mountains, midlands, ecological testing of varieties.