The problem of increasing resistance of winter
barley to adverse conditions of winter is the most
problem in the selection area of this crop. The main
component of this complex trait is the frost
resistance. Laboratory methods of assessment of
frost resistance are important for breeding of winter
barley. These methods can effectively replace more
costly method of direct freezing in the freezers.
Magnesium cations (Mg++) are essential
components of the protein-synthesizing system of
germinating seeds. Magnesium cations determine
the stability and translational activity of mRNA and
rRNA. Trilon B is usually used for in vitro banding
of magnesium cations in area of biochemistry of the
nucleic acids. It was very interesting to verify the
Trilon B influence to seed germination of winter
barley varieties by experiment. Experiments
showed: actinomycin D – the inhibitor of RNA
synthesis – didn’t show varieties specific effect to
seed growth of winter barley, while Trilon B had a
varieties specific impact to length coleoptiles and
roots. Research was carried out on etiolated
seedlings at temperatures from 22 to 28oC, and different concentrations of Trilon B - 1,6×10-3Ðœ,
2,4×10-3Ðœ and 3,2×10-3Ðœ. The roots of 3-days old
seedlings were more sensitive to Trilon B influence.
It is shown the varieties of Russian origin were
naturally reacted to Trilon B: the higher the frost
resistance of variety, the more resistant variety to
the action of various concentrations of Trilon B at
different temperatures. The most optimum
concentration was 3,2 × 10-3Ðœ at 22-25oC.
Varieties by foreign origin deviated from this
pattern. It is interesting to research the genetic
essence of these differences. It will be helpful for
optimization of varieties differentiation conditions
to create a laboratory method of estimate of frost
resistance of winter barley. The new method will be
most efficient compared the direct freezing method
The analysis of the accumulation and distribution of
heavy metals in the stevia raw material grown in
different agroecological regions is carried out. The
elements present in the soils always have a complex
effect on the plant and at the same time enhance or
weaken each other's action. Plants of stevia are able to
regulate the flow of the heavy metals under study,
assimilating organs accumulate the optimal number of
elements necessary for their growth and development,
regardless of the growing conditions
The article presents the results of the research carried
out in 2007-2014. The aim of the study was the
composition of the microflora of the leaf surface of
some plants of the family Grossulariaceae. Based on
these data, the authors distinguish the typical
representatives of the leaf surface microflora. The
authors study the features of isolated strains
interactions
The article is devoted to the results of study of taxonomic situation and ecological features of venomous snake species spread in the territory of the Naxçıvan Autonomous republic. Materials for researches have been collected within 2011-2014 on different biotopes and landscapes according to altitudinal belts of the region. 4 venomous species like: Macrovipera lebetina, Montivipera raddei, Pelias renardi, Pelias dinniki and 2 semivenomous snake species like: Telescopus fallax and Malpolon monspessulanus were revealed in herpetofauna of the Autonomous Republic
The issues of international spread of fruits of long gourd lagenaria and the introduction of it in culture are considered in the article. We have shown how to use it as a vegetable crop and considered varietal diversity of this species. The biological characteristics of lagenaria cultivation as vegetable plants, including peculiarities of the reproductive system have been marked. We have also considered the issues of cultivation and
distribution of long gourd lagenaria (zycca) for food
Species composition and abundance of soil algal flora
were studied in the Central zone of the Krasnodar region
on crops of crops cultivated by various technologies. In
the algal flora of the studied area, 48 species of soil algae
and cyanobacteria from 28 genera and 18 families, 7
classes and 4 divisions were identified. The largest and
numerous in number of species are the departments:
Cyanophyta and Chlorophyta. Extensive delivery:
Oscillatoria, Gloeocapsa. They account for 22 % of the
total number of species. A negative effect of herbicides on
number and species composition of soil algae was noted.
In all variants of their application there was no form of
Klebsormidium flaccidum (Kützing). The number of
species of Chlorella vulgaris Beyer. was low,
Botrydiopsis arhiza Borzi. It is believed that these species
of algae can be used as bioindicators. The positive effect
of mineral fertilizers and the aftereffect of introducing
organic matter on the soil algal flora have been
established. In these variants the deleterious effect of
herbicides was reduced. According to the calculated
regression equations, the applied mineral fertilizers to a
greater extent weakened the negative effect of herbicides
on the total number of populations than the aftereffect of
introduced organics
Along with traditional ways, the biotechnological
methods become more significant in contribution to
plant conservation in situ. The work is dedicated to
elaboration and advancement of the method of isolated
tissues and organs culture for conservation and
reproduction of the badan, Bergenia crassifolia L., the
rare species of Saxifrgaceae family. The conducted
study yielded the regenerated plants of B. crassifolia
from seeds. For the first time, we have performed
conservation and reproduction of B. crassifolia in vitro
under conditions of Yakutia
The article proposes a system of regression equations for estimating industrial wood size by categories and varieties of commercial trunks of oak plantations in the Lower Volga region. The authors developed a table of logs for the taxation of trees and forest stands of oak
Soil degradation (erodere – eat away, lat.) - a process in which result pieces of rocks and soil are separated from of their initial location. Is then transferred and deposited in some new place. The factors of erosion are water, wind, landslides, rock particles and etc. Erosion is the process of destruction and demolition of the soil cover (or parent rocks) flows of water or wind what causes depletion of fertile top soil layer. The destruction of this layer occurs quickly, and for its restoration required the millennium. Reduction of soil fertility is one of the main problems that are associated with its pollution. Erosion is a natural process that occurs very slowly ever since as the Earth was formed (about 45-50 billion years ago). Realistically, mountains, valleys, plains and deltas on Earth's surface have been created by water and wind erosion as a result of their joint action over a long period of time. Geological erosion was acted at a slow pace for hundreds of years. With the emergence of the human occurred of invasion species which could transform their natural environment. Artificial type of erosion, which acts much faster than the natural erosion, was formed with the appearance human
Soil degradation (erodere – eat away, lat.) - a process
when pieces of rocks and soil are separated from their
initial location. Then transferred and deposited in
some new place. The factors of erosion are water,
wind, landslides, rock particles and etc. Erosion is the
process of destruction and demolition of the soil cover
(or parent rocks) by flows of water or wind which
causes depletion of fertile top soil layer. The destruction
of this layer occurs quickly, and for its restoration
thousand years are required. Reduction of soil fertility
is one of the main problems that are associated with
its pollution. Erosion is a natural process that occurs
very slowly ever since the Earth was formed (about
45-50 billion years ago). Realistically, mountains,
valleys, plains and deltas on the Earth's surface have
been created by water and wind erosion as a result of
their joint action over a long period of time. Geological
erosion was acted at a slow pace for hundreds of
years. When humans appeared it occurred to be an
invasion of species which could transform their natural
environment. An artificial type of erosion, which
acts much faster than the natural erosion, was formed
because of human