The distribution and variability of features of the
endemic of flora Eastern Caucasus Centaurea
daghestanica (Lipsky) Czer. were given in this article.
Eleven locations of the species are detected and three
of them are new ones. C. daghestanica grows in the
lower and middle mountain belts from 400 to 1250 m
above sea level. In the lower belt, the species is found
on clayey areas of the solonchak valley of Kar-Kar and
the limestone slopes adjoining the valley, on average
on shale screes and stony slopes. Three populations of
the C. daghestanica we studied. Species composition
on the investigated sites was determined, and a
geobotanical description is carried out. Project
coverage of C. daghestanica in the studied populations
varies within 2–5%. By generative individuals of
different ages were represented mainly populations.
One generative shoot from 30 individuals in each
population was taken to reveal the variability of the
generative shoot structure, on which 13 traits were
taken into account. The degree of variability of the
morphological features of C. daghestanica shoot is
different, the influence of the altitude level on them is
not the same. The annual shoot of C. daghestanica has
an average of 3-5 branches of the first order. Branches
of all levels are located at the bottom of the shoot
We have studied the germination and the nature of germination of seeds of 20 species of FAM. Rosaceae. A wide range of germination characterizes their seeds: rapid, slow, with very poor or no germination. Laboratory germination of seeds stored at room temperature for 6-7 months have 80-100% - 8 species, 66-77% - 3, 1-9% - 4 species and 5 species did not germinate at room temperature, they need special conditions for germination
The review considers a present level of knowledge
of terrestrial gastropod olfactory system. Special
attention is given to data concerning presence of
electrical coupling on different levels of terrestrial
gastropods olfactory analyzer functioning. Analysis
of available literature leads to conclusion that
further study of neural gap junctions in terrestrial
gastropods olfactory system will provide a
significant development in its structure and function
modeling
The work was done based on the collection of the
natural flora of the Yakut Botanical Garden. The
object of research was the seeds of 22 species of the
family Ranunculaceae. It is known that the seeds of
many buttercup characterized morphophysiological
tranquility associated with hypoplasia of the fetus
(Nikolaeva, 1988; 1999), due to what delayed the
germination of their seeds. Laboratory germination of
seeds of the studied species varies from 0 to 100%.
Among them, we have not found the kinds seeds
which have explosive or fast germination (1 type of
seed germination). The germination of the studied
seeds states ranging from 6-7 days or more. The
studied seeds were evenly distributed between 2 (12
species), and 3 types of seed germination (10 species).
Type 2 is characterized by slow germination, type 3 -
poor germination or lack of it
Were summed up of perennial introductory tests of the
representatives of the family Betulaceae S.F. Gray in
the Botanical Garden SFedU. The 33 species of this
family have been studied for a total. Evaluation of
winter hardiness of the family members showed that
the absolute resistance to the full range of factors
winter have representatives genus Betula, also Alnus
incana (L.) Moench and Corylus colurna L. Species of
the genus Betula and Corylus may be attributed to the
plants having a resistance to drought. The highly
drought-resistant species – Carpinus betulus L., C.
turczaninowii Hance, Alnus incana (L.) Moench and
Ostrya carpinifolia Scop. Less than drought-resistant –
Alnus glutinosa (L.) Gaertn. Most of the tested species
should be attributed to hemixerophytes. The high
degree of defeat by fungal diseases of the species
genera Alnus, Betula and Carpinus makes them
unsuitable for the regional culture. The causative agent
of the disease is a fungus Chondrostereum purpureum
(Pers.) Pouzar. Based on the totality ecological and
biological properties only species of the genus Corylus
remain promising for the culture. For introductory test
it is advisable to attract drought-tolerant species of the
family Betulaceae such as: Alnus barbata C.A. Mey.,
A. rubra Bong., A. rugosa (Du Roi) Spreng., Carpinus
cordata Blume, C. caucasica Grossh., C. caroliniana
Walter, C. orientalis Miller., C. tschonoskii Maxim.,
Betula insignis Franch., B. lanata (Regel) V.N. Vassil.,
B. luminifera H.J.P. Winkl., B. nikoensis Koidz., B.
forrestii Hand.-Mazz., B. utilis D. Don., Ostrya
virginiana K.Koch
The article presents the data on the chemical elements
content in soils, plant leaves and lichens of three
squares in Rostov-on-Don. The calculation of the total
index of soil contamination by chemical elements finds
that soils of the square are characterized by a low
degree of contamination
The article presents the first results of studies of
somaclonal variability, which take place during
cultivation of tea plants tissues and organs in vitro
culture. As a starting material, there was used
morphogenic callus, isolated from the basal part of tea
microshoots, because callus increases somaclonal
variability. An optimized protocol of the nutrient
medium for induction gemmogenesis to product somatic
clones of tea plants in vitro culture was developed.
Morphogenesis calluses, initiated from the basal part of
tea microshoots and subcultured on the nutrient medium
with 6 – BAP – 2,5 ml + gibberellic acid – 1,0 ml +
Tidiazuron – 4,0 ml + Tryptophan – 1000 mg,
distinguished by high rates of induction of
gemmogenesis – 63,3 %. The article studies the effect of
exogenous growth regulators on morphological and
growth indices of tea callus culture in vitro
The article presents the long-term data (2007-2015.)
biometric aboveground plant parts and the estimation of
the prospects of the three introduced botanical species
of juniper and recommendations for their use in
landscape design. We have established very promising,
promising and unpromising varieties for landscaping in
the conditions of the foothill zone of the Krasnodar
region out of 16 varieties of juniper species: China,
ordinary and rock
Industrial horticulture assumes the most effective use of
the potential of varieties. One of the key factors
determining the yield of garden plantings is the
effectiveness of pollination. To obtain the maximum
yield, it is necessary to ensure maximum pollination
during the flowering period. For this reason, much
attention has been paid to the selection of pollinators.
Crab-apple forms are promising for use as pollinators, so
this work was aimed at identifying the most common
alleles of the self-incompatibility gene in the crab-forms
using the molecular genetic method of analysis. The
object of the study was 29 apple-tree creams and 3 elite
selection forms. They carried out the molecular genetic
identification of alleles S2 and S10, which are among
the most common apple trees in the world gene pool.
Allele S2 was identified in 16 samples (14 forms and 2
elite selection forms), while S10 allele in one
sample (elite form 12/2-20 (24-28)). Data on the allelic
composition of the S gene in the samples studied are of
value for the formation of a genetic passport on the
compatibility of the studied samples of apple with
modern industrial varieties
Using of compound feeds in broiler feed additives of
plant resources, activates body's biological functions.
This increases productivity and gives an ability to
make environmentally friendly products. These local
plants feed additives contributing to enrich animal feed
with active ingredients include flour from nettle and
Caspian marine algae. This article is devoted to
studying the composition of nettle from the different
locations of growth in Dagestan Republic and also, to
determine the effectiveness of the use of nettle flour
individually and to how implement it with the
seaweeds flour in feeds of broiler chickens instead of
herbal flour. The studies showed that nettle from a
foothill zone in the flowering period exceeds slightly
the nettle from mountain zone on the content of dry
matter-1.19 % of protein-0.09 % and exchange energy
0.77 kcal/100g. Nettle meal from mountainous zone
also inferiors the foothills in the energy value to 6.81
kcal/100 g. The inclusion of 2% feed meal nettle, 3%
seaweed either alone or in combination of 2% instead
of+3% of alfalfa grass meal resulted increasing
broilers’ body weight 4,60-8,95% betterment survival
to2,8-5,70%, increasing muscle output at 0,56-2,54%
compared with the control group. The protein content
and the amount of essential amino acids in the thoracic
muscle in the test group was to 0.97-2.74%andto1,68-
2,11%, respectively, higher than the control. There was
a significant increasing iodine in thoracic muscles of
experimental groups 119,6-166,07% relative to
control. Based on the results of the research, it is
recommended to include 2% of feed meal nettle and
3% from algae instead of 4% grass meal of alfalfa to
improve the productivity and biological value of
broiler meat and 1 % of cereals