scholarly journals AGROBIOLOGICAL AND TECHNOLOGICAL STUDY OF PAMID GRAPEVINE VARIETY

Russian vine ◽  
2021 ◽  
Vol 17 ◽  
pp. 23-30
Author(s):  
N. Keranova ◽  
◽  
F. Emurlova ◽  
A. Ivanov ◽  
V. Roytchev ◽  
...  
Keyword(s):  
Vegetation Period ◽  
Fertility Rate ◽  
Grape Variety ◽  
Wine Production ◽  
Grapevine Variety ◽  
Titratable Acid ◽  
Negative Effect ◽  
Logical Study ◽  
Time Periods ◽  
Technological Study

An agrobiological and techno-logical study of the Pamid grape variety was carried out during the realization of different variants of loading with winter eyes during pruning. An agrobio-logical and technological study of the Pamid grape variety was carried out during the realiza-tion of different loading variants with winter eyes during pruning. It has been established that the phenophases of development during the vegetation period occur and take place al-most simultaneously in the same time periods, and the grapes ripen during the first ten days of September. With the increase in the number of knots of a vine and with their lengthening, there is a well-defined tendency of reducing the percentage of developed winter eyes, fruit-ing shoots, weight per 1 cluster, less of reduc-ing the fertility rate. The vines grow well under the pruning loads of the four variants and the grapes manage to ripen. The best combination of sugar and titratable acid content for wine production is in the grapes from the variants with a load of 6 and 7 knots of a vine. The number of knots has a proven strong or moder-ate negative effect on the percentage of devel-oped eyes, fruiting shoots, bunches, fertility rate, weight of one cluster and 100 grains, dur-ing both years of the study. The increase in the number of knots is in a moderate, positive cor-relation with the yield of one vine.

The rare, Georgian wine grape in modern enology

2020 ◽  
pp. 809-823
Author(s):  
Nino Chkhartishvili ◽  
Londa Mamasakhlisashvili ◽  
Irma Tchanturia ◽  
Demetre Bakradze
Keyword(s):  
Agricultural Research ◽  
Sugar Accumulation ◽  
Total Phenol Content ◽  
Environment Protection ◽  
Grape Variety ◽  
Wine Grapes ◽  
Scientific Center ◽  
Wine Production ◽  
Genetic Pool ◽  
Grape Varieties

Preserving rare grapes is not just a matter of variety. Recent dna research has shown that unusual and unknown grape varieties provide clues to wine history. During the centuries, 525 Georgian grape varieties had been known but most of them were degenerated. Nowadays, more than 437 rare Georgian vine varieties are preserved in the geo 038 collection of Agricultural Research-Scientific Center, established in 2014 under the Environment Protection and agriculture ministry. Study of the genetic pool of Georgian grape varieties determine the sustainability of the sector and enrichment of the modern wine market. For this reason the studies of the rare aboriginal grape varieties have begun by their ampelography, phenology, chemical, and oeno-caprological characterizes. The aim of this study is to investigate rare, Georgian, aboriginal wine-grapes by their ampelography, chemical and oenolo-caprological characterizes, and to offer different style and aroma wines to the market, enriching the modern wine assortment. The present study investigated firstly the rare Georgian aboriginal grape variety (Chvitiluri) by its characterizes. In this study grapes caprologycal indication, dynamic development of the sugar accumulation, TA and pH in berries, polyphenols extract in skin and seeds, and phenolic compounds were determined. The grape has been compared with Georgian and French wine-grapes and their products as well. The results show that the grape variety - Chvitiluri, and vinification technique (aging on lee) have the significant impact on the total phenol content in wine. White varietal wine contents high alcohol 13,2%, total phenols 733-500mg/l. Wine has specific, varietal characterizes color, taste, aroma. This study indicates that the rare local, aboriginal variety presents the perspective sort for wine production and can be returned in wine production.

scholarly journals Growth and Income Inequality: A Comparative Analysis

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Ayla Ogus Binatli
Keyword(s):  
Comparative Analysis ◽  
Income Inequality ◽  
Time Period ◽  
Negative Effect ◽  
Time Periods ◽  
Growth Changes ◽  
Changes Over Time ◽  
The Relationship ◽  
Positive Effect ◽  
Over Time

This paper investigates whether the relationship between income inequality and growth changes over time. Two time periods, covering 1970–1985 and 1985–1999, are analyzed and compared. A statistically significant relationship between inequality and growth in either time period fails to emerge. However, there are indications that effect of inequality on growth may be different in the nineties when compared to the seventies. In the literature, a consistent negative effect of inequality on growth is documented although the significance of the effect is open to debate. This paper also finds a negative effect of income inequality on growth in the seventies but, although statistically insignificant, a consistently positive effect in the nineties.

Fining of red wines: effects on their analytical and sensory parameters

OENO One ◽  
2011 ◽  
Vol 45 (1) ◽  
pp. 47 ◽  
Author(s):  
Asimenia Karamanidou ◽  
Stamatina Kallithraka ◽  
Efimia Hatzidimitriou
Keyword(s):  
Phenolic Content ◽  
Practical Interest ◽  
Quality Parameters ◽  
Total Phenolic ◽  
Phenolic Composition ◽  
Red Wines ◽  
Grape Variety ◽  
Color Intensity ◽  
Wine Production ◽  
Fining Agent

<p style="text-align: justify;"><strong>Aim</strong>: The aim of the present study was to examine the influence of protein fining on selected quality parameters of wines made from indigenous Hellenic red grape varieties.</p><p style="text-align: justify;"><strong>Methods and Results</strong>: Three different commercial hydrolyzed gelatins and egg albumin were added to two young red wines at three concentrations commonly used in winemaking. The cultivars selected were Hellenic native <em>V. vinifera</em> species used for the production of high quality Appellation of Origin wines (Agiorgitiko and Xinomavro). All the quality parameters studied (anthocyanin concentration, color intensity and hue, ionization degree, total phenolic content, DPPH radical scavenging activity, tannin and polysaccharide concentration, gelatin and HCl indexes, as well as individual phenolic content) were significantly decreased after the addition of the fining agents. The decrease observed was mainly dependent on grape variety, which genetically determines the wine’s phenolic composition, and to a lesser extent on the fining agent used and the dosage applied. In general, treated wines obtained better scores in sensory analysis as compared to untreated ones, although statistically significant differences were only obtained in the Agiorgitiko wine regarding color intensity and hue, acidity, balance, aftertaste, and overall impression.</p><p style="text-align: justify;"><strong>Conclusion</strong>: Wine quality parameters after fining were mainly influenced by the wine’s initial phenolic composition, which is determined mostly by grape variety.</p><p style="text-align: justify;"><strong>Significance and impact of the study</strong>: The outcomes of such study might be of practical interest to winemakers since they could optimize red wine production technology by selecting the appropriate fining agent according to the specific phenolic profiles of the produced wines and thus improve their quality.</p>

scholarly journals Autochthonous starter cultures and indigenous grape variety for regional wine production

2015 ◽  
Vol 118 (6) ◽  
pp. 1395-1408 ◽  
Author(s):  
C. Garofalo ◽  
M. El Khoury ◽  
P. Lucas ◽  
M. Bely ◽  
P. Russo ◽  
...  
Keyword(s):  
Starter Cultures ◽  
Grape Variety ◽  
Wine Production ◽  
Regional Wine

Effects of growth retardant application on grape quality of « Mavrodafni » grapevine variety

OENO One ◽  
2002 ◽  
Vol 36 (2) ◽  
pp. 103
Author(s):  
Eleftheria Zioziou ◽  
Nektarios Tavernaraki ◽  
Nikolaos Nikolaou
Keyword(s):  
Soluble Solids ◽  
Grape Variety ◽  
Strong Decrease ◽  
Vegetative Period ◽  
Grapevine Variety ◽  
Grape Quality ◽  
Anthocyanin Concentration ◽  
Randomized Experimental Design ◽  
Berry Composition

<p style="text-align: justify;">The effects of bloom applications of 2-Chloroethyltrimethylammonium chloride (CCC) and Succinic acid-2,2-dimethylhydrazide (SADH) on fruit quality of Mavrodafni wine grape variety were studied. Over the vegetative period of 2000, sprays of 500 or 1 000 mg/l CCC and 3 000 or 6 000 mg/l SADH were applied, two weeks before bloom or at 20 p. cent of bloom in a completely randomized experimental design, replicated 10 times. Bunch and berry characteristics, berry composition, and phenolic maturity were measured at harvest. There were no differences between the two days of application. Berry number per bunch and per cm of rachis length, were increased by CCC 1 000 mg/l and SADH 6 000 mg/l treatments. Berry weight was decreased by all treatments with a greater reduction in CCC 1 000 mg/l treatment. Soluble solids were reduced by SADH treatment with a greater reduction in 6 000 mg/l of SADH and increased by CCC treatments at both concentrations. Anthocyanin concentration and extractability were increased in CCC at 1 000 mg/l treatments, while the extractability of grains tannins was reduced. A strong decrease of bud fertility was observed in 6 000 mg/l of SADH.</p>

Effect of extraction system and grape variety on anti-influenza compounds from wine production residue

Food Control ◽  
2019 ◽  
Vol 99 ◽  
pp. 180-189 ◽  
Author(s):  
Alaa El-Din A. Bekhit ◽  
Vern Jou Cheng ◽  
Hongxia Zhang ◽  
Sonya Mros ◽  
Isam A. Mohamed Ahmed ◽  
...  
Keyword(s):  
Extraction System ◽  
Grape Variety ◽  
Wine Production

scholarly journals Drought stress and soil management practices in grapevines in Cyprus under the threat of climate change

2018 ◽  
Vol 9 (4) ◽  
pp. 703-714 ◽  
Author(s):  
Antonios Chrysargyris ◽  
Panayiota Xylia ◽  
Vassilis Litskas ◽  
Athanasia Mandoulaki ◽  
Demetris Antoniou ◽  
...  
Keyword(s):  
Climate Change ◽  
Management Practices ◽  
Adaptation Strategy ◽  
Soluble Solids ◽  
No Tillage ◽  
Wine Production ◽  
Yield And Quality ◽  
Negative Effect ◽  
One Year ◽  
Red Grape

Abstract The Middle East, the cradle of viticulture and wine production, is gradually but steadily becoming hotter and drier because of climate change (CC). In the current study, we evaluated the effect of tillage and irrigation on yield and quality characteristics of the heat-resistant, indigenous red-grape variety Maratheftiko for one year. Yield increased (two-fold) in vines with irrigation and tillage compared to tillage with no irrigation. The absence of tillage buffered the negative effect of the lack of irrigation on yield. At the veraison stage, leaf stomatal conductance decreased in non-irrigated vines, independently of the application of tillage or not. At veraison, tillage increased (up to 27.5%) phenolics when compared to no tillage in non-irrigated vines. Vines accumulated more N, P, and K and less Mg during the flowering stage compared to veraison. At veraison, irrigation decreased K content in vines subjected to tillage and decreased Mg content in vines subjected to no tillage. Total soluble solids and anthocyanins of berries increased with the absence of irrigation and tillage. Total phenolics increased with tillage in both irrigated and non-irrigated plants. Our results indicate that no tillage systems may be viable as an adaptation strategy in the context of CC.

Response to host density by the parasitoid Dolichogenidea tasmanica (Hymenoptera: Braconidae) and the influence of grapevine variety

2013 ◽  
Vol 104 (1) ◽  
pp. 79-87 ◽  
Author(s):  
C.A. Paull ◽  
N.A. Schellhorn ◽  
A.D. Austin
Keyword(s):  
Large Scale ◽  
Field Experiments ◽  
Host Density ◽  
Dependent Manner ◽  
Grape Variety ◽  
Density Dependent ◽  
Grapevine Variety ◽  
Naturally Occurring ◽  
Scale Field ◽  
Large Scale Field

AbstractNatural enemies that respond to prey in a density-dependent manner may be able to quickly suppress pest populations before they reach economically damaging levels. Although it is primarily the combination of a natural enemy's functional response and a population numerical response that will influence the maximum number of pests attacked, other factors may influence a density-dependent response. We conducted large-scale field experiments, both artificially inoculating grapevines with larvae and using naturally occurring populations, to quantify and characterize the response of a parasitoid, Dolichogenidea tasmanica (Cameron) (Hymenoptera: Braconidae) to different densities of its host, the pest of grapevines, Epiphyas postvittana (Walker) (Lepidoptera: Tortricidae). We showed that the response of D. tasmanica to the density of E. postvittana was inversely density-dependent, and that the degree of parasitism was consistently and significantly higher in the grape variety Cabernet Sauvignon compared with Chardonnay. While the significant effect of variety on the degree of parasitism may provide an option for increasing the parasitism of E. postvittana by D. tasmanica, it also highlights how differences in host plant can influence trophic interactions.

scholarly journals Military expenditure and economic growth: A survey

2013 ◽  
Vol 8 (1) ◽  
Author(s):  
J. Paul Dunne ◽  
Nan Tian
Keyword(s):  
Economic Growth ◽  
Cold War ◽  
Theoretical Approach ◽  
Statistical Significance ◽  
Military Expenditure ◽  
Economic Factors ◽  
Empirical Methods ◽  
Negative Effect ◽  
Time Periods ◽  
The Cold War

Until recently, a long-standing, impressively large, and growing literature on the effects of military expenditure on economic growth appeared to have failed to result in a scholarly consensus. But the availability of 20 more years of data since the thawing of the cold war has helped researchers to make progress in identifying any relation of military expenditure with economic factors. The literature is complex and difficult to summarize, with studies differing in their theoretical approach, in the empirical methods used, in the coverage of countries and time periods employed, and in their quality and statistical significance. This article extends and updates an earlier survey, now covering almost 170 studies. It finds that more recent studies provide stronger evidence of a negative effect of military expenditure on economic growth.

scholarly journals The effect of yeast strains on the formation of aroma complex of base wines from 'Tsitronnyi Magaracha' grape variety

2021 ◽  
pp. 66-71
Author(s):  
Максим Юрьевич Шаламитский ◽  
Татьяна Николаевна Танащук ◽  
Виктор Афанасьевич Загоруйко ◽  
София Николаевна Червяк
Keyword(s):  
Yeast Species ◽  
Chemical Compounds ◽  
Higher Alcohols ◽  
Grape Variety ◽  
Organoleptic Evaluation ◽  
Wine Production ◽  
Terpene Alcohols ◽  
Yeast Strains ◽  
Grape Varieties ◽  
Selection Of

Одним из важных современных направлений виноделия является получение высококачественных вин с узнаваемой сортовой индивидуальностью. В данном аспекте наиболее привлекательными для потребителя являются вина из мускатных сортов винограда. Pабота посвящена изучению влияния штаммов дрожжей рода Saccharomyces на формирование сортового аромата виноматериалов из винограда сорта Цитронный Магарача и отбору перспективных штаммов для их производства. Объектами исследования являлись виноматериалы, приготовленные с использованием 20 штаммов дрожжей вида S. cerevisiae. В результате хроматографического анализа было идентифицировано 17 компонентов, относящихся к различным группам химических соединений: высшим спиртам, сложным эфирам, терпеновым спиртам. Исследуемые штаммы способствовали накоплению в виноматериалах терпеновых спиртов в концентрации от 0,46 до 1,51 мг/л, высших спиртов - от 153,86 до 263,89 мг/л, сложных эфиров - от 3,96 до 19,09 мг/л. По результатам органолептической оценки опытных образцов для производства вин из винограда сорта Цитронный Магарача рекомендованы два коллекционных штамма Алиготе М (I-76) и Мускат 4 (Р) (I-637) из КМВ «Магарач». Использование данных штаммов позволило получить виноматериалы с ярким развитым ароматом цветочно-фруктового направления с проявлением тонов цитрусовых и розы. Отмечено, что штамм Алиготе М (I-76) способствовал обогащению виноматериалов терпеновыми спиртами и сложными эфирами, штамм Мускат 4 (Р) (I-637) - сложными эфирами. One of the important modern trends in winemaking is the production of high quality wines with recognizable varietal identity. In this aspect, the most attractive for consumers are the wines from muscat grape varieties. The work is devoted to the study of the effect of yeast strains of the Saccharomyces genus on the formation of varietal aroma of base wines from grapes of 'Tsitronnyi Magaracha' variety and selection of promising strains for their production. The objects of the study were base wines prepared using 20 strains of S. cerevisiae yeast species. As a result of chromatographic analysis, 17 components of various groups of chemical compounds were identified: higher alcohols, esters, terpene alcohols. The studied strains contributed to the accumulation of terpene alcohols in concentration from 0.46 to 1.51 mg/l, higher alcohols - from 153.86 to 263.89 mg/l, esters - from 3.96 to 19.09 mg/l. According to the results of organoleptic evaluation of experimental samples for wine production from grapes of 'Tsitronnyi Magaracha' variety, two strains 'Aligote M' (I-76) and 'Muscat 4' (P) (I-637) from the Magarach Collection of Microorganisms of Winemaking are recommended. The use of these strains have made it possible to obtain base wines with advanced rich aroma of a floral-fruity direction with demonstration of citrus and rose hues. It was noted that the strain 'Aligote M' (I-76) contributed to the enrichment of base wines with terpene alcohols and esters, the strain 'Muscat 4' (P) (I-637) - with esters.

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