Name
Troshin Leonid Petrovich
Scholastic degree
•
Academic rank
professor
Honorary rank
—
Organization, job position
Kuban State Agrarian University
Web site url
—
Articles count: 170
The article gives an overview of the results of studies on indigenous grape varieties of the Republic of Abkhazia and the identification of their agro-biological characteristics
The article presents historical information about the
stages of gradual transformation of the first non-large
wine-making institution of Crimea, organized in 1828
under the initiative of Prince M.S. Vorontsov in the
natural boundary called Magarach near the Imperial
Nikitsky botanical garden in the world famous Institute
of Grape and Wine "Magarach" - once the chief
coordinator of the research work in the field of viticulture
and winemaking republics of the USSR and the
main forge of scientific staff in this direction. Among
the directors of the institute of the last century, there
were such talented organizers as A.G. Globa, T.G.
Kataryan, P.Y. Golodriga. The Institute operated a
network of regional branches, created enotec with a
settled in 1836 wine Muscat pink Magarach (World
rarity is reflected in the Guinness book of records), the
world ampelographic collection (fourth in number of
samples), scientists developed area-standard assortment
for production, issued 11 Volumes of "Ampelography
of USSR" (awarded by OIV), designed a lot
of outstanding for yield and stability varieties (Pervenets
Magaracha, Ranniy Magaracha, Citron
Magaracha et al.) and clones (Muscat white of Red
Stone, Pinot Noir yields and others.) grapes. There
was a significant contribution in the sphere of research
and development of viticulture and winemaking of
world, the institute was given an international prestige
and this led to establishing the base of the General
Assembly of the OIV - International Organization of
Grape and Wine, the International Symposium on the
selection of wine-town, several international wine
tasting competitions and International finest examples
of table grapes
The newest high-tech pink berry aromatic grape variety Hara selected by hybridization at the Athens Institute of Viticulture (Likovrisi, Greece) researchers P.K. Zamanidi and L.P. Troshin in 2004 by crossing the Greek varieties Avgulato with Traminer pink. According to the morphological and physiological characteristics related to the eco-geographical group of Black Sea. Growth of shoots is strong (2,1-3,0 m). Degree of ripening vines is very high (over the entire length other than top of shoot). Length of production period from bud burst to harvest 146-155 days. Productivity is very high, 25-30 t/ha. Percentage of productive shoots - 90. The average mass of clusters within 350 g. Characterized by a high winter hardiness, drought and increased resistance to fungal diseases in comparison with varieties Vitis vinifera. Hermaphrodite flower with stamens and fully developed gynoecium. Cluster medium, conical, medium density. Berry medium, spherical, pink color, with a thick waxy coating. Peel of medium thickness, dense, durable. Pulp and juice with pronounced varietal flavor of Gewurztraminer. Sugar content is very high, more than 24%. When overripening dry-curing and continuously stored on the clusters. Variety intended for the manufacture of dry white wines of excellent grade and high-quality dessert and sweet wines; suitable for production of high quality juices, compotes
Effects of different levels of vitamins (thiamine, pyridoxine and nicotinic acid) and macro-elements (MS, NN and PG) on development of globular, heart- and torpedo-stage embryos and plantlets with green cotyledons and on shoot production from them were studied in grapevine interspecific hybrids: cvs. ‘Bianca’, ‘Podarok Magaracha’ and ‘Intervitis Magaracha’. Pro-embryogenic calli were derived from petiole explants on solid full-strength NN medium supplemented with different levels of 2,4-dichlorophenoxyacetic acid (2,4-D) and 6-benzyladenine (BA) for each cultivar and used to initiate cell suspensions in liquid NN medium supplemented with 1 mg L-1 2,4-D and 0.2 mg L-1 BA. The following formulations of media were optimal for different stages of somatic embryogenesis and for plantlets with green cotyledons development: liquid NN medium supplemented with 0.5 mg L-1 BA for globular embryo formation; liquid HTE medium (with PG macro-elements, thiamine and pyridoxine at 5 mg L-1 each and 0.5 mg L-1 nicotinic acid): supplemented with 0.2 mg L-1 BA for heart-stage embryo development, supplemented with 0.1 mg L-1 indole-3-acetic acid (IAA) and 30 mg L-1 sodium humate for torpedo-stage embryo development and supplemented with 0.5 mg L-1 gibberellic acid (GA3) for the growth of plantlets with green cotyledons. Solid MS medium modified by the addition of nicotinic acid, pyridoxine and p-aminobenzoic acid (PAB) at 5 mg L-1 each, 0.5 mg L-1 thiamine and 0.5 mg L-1 BA was best efficient for shoot production from plantlets. Inflorescence formation in regenerated plants of cv. ‘Podarok Magaracha’ grown on solid hormone-free PG medium was induced by addition of nicotinic acid, pyridoxine and PAB at 5 mg L-1 each, 0.5 mg L-1 thiamine and 0.2 mg L-1 BA into liquid modified HTE medium for growth of plantlets with green cotyledons and into solid modified MS medium for shoot production from them.
Results of four-year (2004-2007) researches of
perspective technical grape varieties by contrast
zones of Krasnodar region : in central- Antaris,
Beisug, Cabernek, Clairette Temryk, Litdar, Merlok, Muscat Kuban, Rislinalk, Risling Kuban, Shardonek, in Anapa-Krasnostop AZOS, Rubin AZOS and to the memory of Zotkina, were cited in the article. It was shown their superiority under control varieties.
Ampelographical screening of gene pool was carried out in subzone Temryk on the plot of I.G. Karas’
in 2007 and in the result of which there were selected some perspective varieties: Arcadia, Victoria, Hybrid 342, Long-waited , Lora, Original.
In this article we have described a study of genotyping of new three productive wine grapes protoclones: Rhine Rieslin, Verdot black and Johanniter
In this article we have described our work on genotyping of new ten productive wine grape protoclones
This article presents the results of genotyping of new
perspective table and technical varieties and grapes
protoclones. It was established that varieties of Citrine,
Helios, Arcadia pink and Preobragenie show differ
genetic diversity in four loci
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