In this article we present the research data of the influence of crossing on young pigs hematological parameters and meat productivity
The article presents an analysis of the influence of genes MС4R and POU1F1 on backfat of pigs. Shows the frequency of alleles and genotypes for genes MС4R and POU1F1 and their relationship with the parameters of backfat
Hybridization was performed for nine hybrid
combinations between Russian early-ripening varieties
Novator and Serpantin and South Korean cold-tolerant
introduced samples Odaebueo и Tinbubueo. As a
result, 283 hybrid caryopses in eight combinations
were obtained, which were later studied in growing
conditions. Study of trait inheritance in F1 hybrids was
conducted, heterosis effect of studied hybrid
populations was determined by productivity and
individual elements of yield structure, using indicators
of the degree of phenotypic dominance (hp) of
quantitative traits. Significant variability in agronomic
traits of F1 hybrids was determined. The manifestation
of heterosis in productivity was noted in combination
Odaebueo / Tinbubueo, in which super dominance was
observed by all the studied traits forming productivity,
in the hybrid progeny. Using the "halves method",
analysis for cold resistance of 227 F2 plants in eight
hybrid populations was performed. Seven lines with
increased resistance to low positive temperatures
during germination were identified in five hybrid
combinations, which is 3% of the studied material. It
is shown that in breeding for cold resistance as mother
plants in hybridization it is necessary to use rice
varieties (samples) that are resistant to low positive
temperatures during germination, and as paternal -
more productive varieties, adapted to soil and climatic
conditions of rice growing area of the Krasnodar
Region
Combining ability with respect to “grain productivity” has been studied among thirty eight self-pollinated lines of maize of mid-early and early maturing in the system of hybrid combinations. The lines with high general (GCA) and specific (SCA) combinative ability have been hybridized. New high heterotic hybrids have
been developed on the basis of lines with high GCA and SCA
This article provides an overview of results of the conducting surveys on screening and saving gene pool of indigenous grape varieties in the Republic of Abkhazia, which contributed to detection and identification of the 15 previously described in the literature of Abkhazian native grape varieties
The article highlights the issues of grape plants resistance
to low temperatures; it is an urgent problem for
all wine-growing regions of the world, located in the
zone of risky agriculture. Losses caused by frost, indicate
long-standing necessity of perfection of assortment
in terms of enhancing its hardiness by enriching
more resistant genotypes obtained both through the
introduction or naturalization, as well as from the
crossing of indigenous with interspecies hybrids. Methodology for evaluating frost resistance properties
of the material served as a preparation for the originality
of his research and experimental evaluation of the
unique divisibility properties of the aim. Thus, we initially
conducted hardening of matured cuttings at positive
temperature plus 8 plus 4 ° C for 14 days (I
quenching phase) and a negative temperature minus 5 °
C-minus 7 ° C for 9 days and minus 10 ° C-1 day (II
hardening phase). Then the cuttings we frozen in the
temperature range from minus 16 ° C to the next steps
of consistent freezing (minus 16 ° C - 2 days; minus 18
° C - 2 days; minus 20 ° C - 2 days; minus 22 ° C –
1day, minus 24 ° C - 1 day, minus 26 ° C - 1 day, minus
28 ° C - 1 day and minus 30 ° C - 8 hours). After
freezing of cuttings of each variety, the sample was
placed on the 3 days in the refrigerator at the temperature
of + 2 ° C to their gradual thawing. Cuttings were
grown at room temperature on water. As a result, obtained
by the accounting: the lowest frost-resistance
among the studied forms of parental Crimean origins
was found in grades of Shabash, Soldayya and Solnechnodolinsky;
the varieties of Dzevat kara, Kokur
bely, Kokur cherny, Misket, Misgyuli kara, Sari Pandas
were set as a weak level (-20 °C); Aybatly, Kefesiya,
Kok pandas and Ekim kara have average level up
to -22 °C; the highest frost-resistance - 24 °C – was
shown by Khersonessky and Kapselsky. Also, we have
identified synthetic frost-resistant F1-population and
plus-transgressive selection form
The article gives a brief summary on the results of the
introduction of rose varieties of climbing type in the
central sub-zone of the Krasnodar region. Starting
from the year 2000 in our institute a collection of roses
from different garden groups, which includes 164
varieties, has been formed. Presently the rose varieties
with long stems (from 2.5 m or more) are popular
among specialists of landscape industry and floristlovers.
Therefore we carry on introductions and study
rose varieties of the groups of Rambler and LargeFlowered
Climber. Rose varieties with valuable
decorative signs, with enhanceable resistance to cold
and drought-resistingness are selected. The valuable
varieties and sources of the indicated signs are
identified. Varieties of Albertine, American Pillar,
Devichiy grezy are the sources of bright flower color;
Bobbie James, Dorothy Perkins, Duc de Constantine -
sources of long (more than 4 meters) of flexible
shoots Warthburg - the source of early flowering.
Variety New Daun - one of the few varieties of
Rambler, which is characterized by re-bloom
throughout the growing season in the conditions of the
Krasnodar region. The indicative collection of several
rose varieties includes the group of Large-Flowered
Climber. A variety called Adzhimushkay is a source of
large fragrant flowers of bright and early flowering.
For the variety of Crimskiy Motive we noted the
presence of a valuable feature - long flowering during
the dry season (July-August). Flammentanz was
included into the collection as one of the most winter
resistant varieties of large-flowered. Promising
varieties of the series of Super Rambler in the
conditions of Krasnodar in the dry season formed short
shoots, and flowers were not formed. Rose varieties
included into the collection can be considered
indicative of "anchor" genotypes, which are valuable
for involvement into the selection process
Description of nitrogen stock for black soils of southern and eastern European facies is given in the article. It is ascertained, that the black soil subtypes in the South of Russia have low content of mineral nitrogen (0,4-4,2%) and easily hydrolysable one (6,0-8,3), two times more than that of hard-to- hydrolyze nitrogen (13,4-16,4%), while the main part of nitrogen stock (74,4-78,9%) is found in unhydrolyzable fraction which practically does not participate in farm crop nutrition
There were cited the results of sweet cherry perspective clonal stocks root system study in the conditions of irrigated garden. There were determined the differences of root location on soil horizons. There were revealed the interinfluence of graft and stock on development of root system and character of root location in soil
The microbiological composition of the rhizosphere of the soft wheat (Triticum aestivum L.), the two-row barley (Hordeum distichon L.) and the sowing oats (Avena sativa) was studied. It is shown, that the total number of the rhizosphere microorganisms changes during the plant growth and development. The specificity of the microbial composition of the three studied cereal crops has been observed