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Solaris
Grape (Vitis)
Solaris grapes harvested in Lysekil, Sweden
Color of berry skinBlanc
SpeciesVitis
Also called240-75
OriginFreiburg, Germany
Original pedigreeMerzling x GM 6493
Pedigree parent 1Merzling = Seyve-villard 5276 x (Riesling x Pinot gris)
Pedigree parent 2GM 6493 = Zarya Severa x Muscat Ottonel
Notable regionsGermany
VIVC number20340

Solaris is a variety of grape used for white wine. It was created in 1975 at the grape breeding institute in Freiburg, Germany by agricultural scientist Norbert Becker.[1]

Pedigree

[edit]
2018 Wine of Belgium with the Solaris grape.
A Danish wine made from Cabernet Cantor, an offspring of Solaris.

Becker created Solaris by crossing the variety Merzling (which is Seyve-villard 5276 x (Riesling x Pinot gris)) as the mother vine with Gm 6493 (which is Zarya Severa x Muscat Ottonel) as the father vine.[2] Gm 6493 was one of several crossings created in Czechoslovakia in 1964 by Professor Vilém Kraus. Kraus offered several of his crosses to Dr. Helmut Becker at the Geisenheim grape breeding institute, where additional work was carried out, and where his plants were given "Gm" serial numbers for Geisenheim. Gm 6493 has previously been erroneously stated to be Saperawi Severni x Muscat Ottonel but is now identified as Zarya Severa x Muscat Ottonel.[3]

Solaris is classified as a Vitis vinifera grape apt to be grown and made wine with by the EU, although it contains traces of hybrid grapes in its pedigree. It was formally listed as a Vitis vinifera cultivar.[2] It received varietal protection in 2001.

Solaris was the product of a programme for breeding disease-resistant grape varieties, and has good resistance against fungal attacks. As it is a hardy variety, it is commonly grown in northern European countries with marginal climate for winemaking, such as Belgium, the Netherlands, England, Denmark, Sweden and Norway. As of 2007, there were 54 hectares (130 acres) of Solaris in Germany, of which 35 hectares (86 acres) were in Baden, where Freiburg is located.[4]

Properties

[edit]

Solaris is an early ripening variety with good resistance against fungal diseases and frost.[4] It gives wines which have fruity and aromatic aromas with hints of gooseberry, citrus and elderflower with high acidity. It is considered to be suitable for dessert wines, as it ripens to high must weights. In cooler climate, with less sugar content, also as a dry wine suitable for fish, shrimp or chicken.[1]

References

[edit]
Revisions and contributorsEdit on WikipediaRead on Wikipedia

Solaris (grape)

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Solaris is a white hybrid grape variety renowned for its high resistance to fungal diseases and adaptability to cool climates, producing aromatic wines with tropical fruit notes and balanced acidity.[1][2] Developed in 1975 at the Staatlichen Weinbauinstitut Freiburg in Germany by breeder Norbert Becker, Solaris resulted from a cross between Merzling (a Seyve-Villard and Riesling hybrid) and Gm 6493 (itself a cross of Zarya Severa and Muscat Ottonel).[3][2] This Piwi (pilzwiderstandsfähig, or fungus-resistant) variety was bred to address challenges in viticulture amid increasing environmental pressures and restrictions on chemical fungicides.[1][2] Officially released for cultivation, it quickly gained recognition for enabling sustainable grape growing with minimal pesticide use.[3] Viticulturally, Solaris exhibits early bud burst, flowering, and ripening, typically achieving harvest by early to mid-September, which allows it to thrive in regions with short growing seasons and low sunshine hours.[1][3] The vines produce medium-sized, yellow-green berries in medium-dense clusters, with thick skins that offer protection against pests like wasps and fruit flies, though susceptibility to these increases with early ripeness.[2][3] It demonstrates strong resistance to downy mildew, powdery mildew, and botrytis, alongside good frost tolerance, making it low-maintenance and suitable for less optimal vineyard sites.[3][2] Yields are reliable and abundant, often reaching high must weights of around 100° Oechsle by early September, contributing to its high natural sugar accumulation even in cooler conditions.[1][3] In winemaking, Solaris yields expressive, perfumed wines characterized by flavors of banana, hazelnut, pineapple, mango, passionfruit, and citrus, complemented by floral aromas and a full-bodied texture with vibrant acidity.[1][2] Dry varietal wines often evoke Chardonnay, while sweeter styles resemble Sauvignon Blanc; techniques like skin contact and cool fermentation enhance its fruity intensity and harmony.[3] It is versatile for off-dry, sweet, and sparkling wines, and is frequently blended with varieties like Riesling or Pinot Blanc in Germany to add aromatic depth.[1][2] Primarily cultivated in Germany's Baden and Rheinhessen regions, Solaris has expanded to other cool-climate areas including Switzerland, Denmark, Norway, Sweden, Belgium, England, and Italy's Trentino-Alto Adige since 2011.[1][2] Its resilience supports organic and sustainable viticulture in marginal climates, promoting its growth in Scandinavia and the United Kingdom where it excels in producing high-quality whites despite challenging weather.[1][2]

History and Development

Breeding Origins

The breeding of Solaris was initiated in 1975 at the Staatliches Weinbauinstitut Freiburg in Germany by agronomist Norbert Becker, as part of a targeted program to create fungus-resistant hybrid grape varieties adapted to the challenges of cooler European climates.[4][5] This initiative sought to address limitations in traditional Vitis vinifera cultivation, such as vulnerability to harsh winters and short growing seasons, by incorporating resilient traits from interspecific hybrids.[3] The core motivations behind the program emphasized developing a variety with early ripening to avoid autumn frosts, robust cold hardiness for winter survival, and inherent resistance to prevalent fungal pathogens like downy mildew (Plasmopara viticola) and powdery mildew (Erysiphe necator), thereby enabling reduced reliance on chemical pesticides in sustainable viticulture.[6][7] Becker's approach aligned with broader PIWI (pilzwiderstandsfähig, or fungus-resistant) breeding efforts in Germany during the 1970s, prioritizing ecological and economic benefits for marginal wine regions.[8] The foundational cross for Solaris involved Merzling—a complex hybrid derived from Seyve-Villard 5-276 and a Riesling-Pinot Gris cross—as the seed parent, pollinated by Geisenheim 6493, an earlier hybrid of the Russian Zarya Severa and the aromatic Vitis vinifera Muscat Ottonel.[4][9] This combination was selected to blend Merzling's mildew tolerance and moderate vigor with Geisenheim 6493's frost resistance and subtle muscat flavors, yielding progeny with balanced hybrid characteristics.[8] Subsequent selection entailed evaluating the resulting seedlings through extended field trials at Freiburg, assessing key attributes including vine vigor, yield consistency, ripening timing, disease response, and oenological potential over multiple seasons to isolate the superior genotype designated as Solaris (breeding code FR 240-75).[4][10] This rigorous process ensured the variety's suitability for practical viticultural use while maintaining high wine quality standards.

Release and Early Adoption

Solaris was developed through crossing in 1975 at the State Viticulture Institute in Freiburg, Baden-Württemberg, Germany, by breeder Norbert Becker, following trials that confirmed its potential for producing quality white wines with enhanced disease resistance.[10] Plant variety protection was granted in 2001, paving the way for broader evaluation and use.[10] Commercial cultivation was officially authorized in Germany in 2004, marking the variety's transition from experimental status to permitted planting, primarily in the Baden region where initial trials had taken place since the institute's breeding program.[11] By 2007, Solaris occupied approximately 54 hectares in Germany, concentrated in Baden, reflecting cautious early uptake amid regulatory hurdles for hybrid varieties.[12] Early adoption gained momentum through the organic and sustainable viticulture movements, as Solaris' robust resistance to fungal diseases like downy and powdery mildew enabled up to 80% reduction in fungicide applications compared to conventional varieties, aligning with demands for lower chemical inputs.[7] The first commercial Solaris wines emerged in Germany during the mid-2000s, often from small-scale producers in marginal climates, capitalizing on the grape's early ripening and frost tolerance to support resilient practices.[11] In its initial years of availability, Solaris faced challenges from traditional winemakers skeptical of its interspecific hybrid origins, perceiving it as less prestigious than pure Vitis vinifera cultivars and questioning its alignment with established quality standards.[7] However, rising concerns over climate variability began fostering interest, positioning Solaris as a practical option for adapting to warmer, wetter conditions in northern European viticulture.[7]

Genetic Pedigree

Parent Varieties

Merzling is a white interspecific hybrid grape variety bred in 1960 at the State Institute of Viticulture in Freiburg, Germany, by Dr. Johannes Zimmermann through the crossing of Seyve-Villard 5-276 (a complex hybrid incorporating Vitis lincecumii and Vitis rupestris for phylloxera resistance) and (Riesling x Pinot Gris).[13][14] This variety is characterized by its robust vigor, early to medium ripening, and notable cold hardiness, allowing it to withstand temperatures down to -20°C, along with moderate resistance to both powdery and downy mildew. In the pedigree of Solaris, Merzling contributes these traits of enhanced vine vigor and accelerated ripening, supporting cultivation in cooler climates while maintaining reasonable yields.[15] Zarya Severa, also known as Severnyi, is an interspecific hybrid developed in 1936 at the Michurinsk Institute in the Soviet Union by Ya. I. Potapenko and E. Zakharova, from a cross between Vitis amurensis (a cold-hardy East Asian species) and Seyanets Malengra (a seedling of Précoce de Malingre).[16][17] Bred specifically for extreme northern conditions, it exhibits exceptional frost tolerance, surviving temperatures as low as -35°C to -40°C, and provides good resistance to downy mildew, though it is more susceptible to powdery mildew. Through its role in the Geisenheim 6493 lineage (Zarya Severa x Muscat Ottonel), it transmits these frost-resistant qualities to Solaris, bolstering its adaptability to harsh winters.[18][19] Muscat Ottonel is a Vitis vinifera white grape variety originating from France in the mid-19th century, likely arising as a natural seedling or cross involving Muscat Blanc à Petits Grains and possibly Chasselas Musqué, first documented around 1850 in Angers.[20] Renowned for its pronounced muscat aroma featuring floral, grapey, and citrus elements, it ripens early and produces light-bodied, aromatic wines suitable for both dry and sweet styles, though it shows moderate susceptibility to fungal diseases and cold.[21] As a parent in Geisenheim 6493, Muscat Ottonel endows Solaris with delicate floral and fruity aromas, enhancing the sensory complexity of the resulting wines while introducing classic vinifera elegance to the hybrid structure.[22] The complex pedigree of Solaris, involving interspecific crossings with non-vinifera species such as Vitis amurensis via Zarya Severa, introduces hybrid vigor for improved resilience against abiotic stresses like frost and biotic threats like mildew, yet necessitates careful assessment to balance these benefits with optimal wine quality and minimal off-flavors typical of some hybrids.[23]

Hybrid Characteristics

Solaris is classified as a complex interspecific hybrid, resulting from crosses involving multiple non-Vitis vinifera species such as Vitis amurensis, Vitis lincecumii, and Vitis rupestris alongside Vitis vinifera, which differentiates it from traditional pure Vitis vinifera varieties.[10] This multifaceted genetic background stems from its parentage of Merzling (itself a hybrid) crossed with Gm 6493 (Zarya severa × Muscat Ottonel), incorporating resilience traits from American and Asian Vitis species while retaining significant V. vinifera character for wine quality.[24][10] The hybrid exhibits strong genetic stability, with high heritability of disease resistance traits inherited from its progenitors, and no off-types have been reported in propagation efforts, supporting its suitability for clonal selection to maintain uniform planting material. This reliability in vegetative reproduction ensures consistent expression of desirable attributes across generations without unintended variations. Solaris holds significant breeding value in ongoing hybrid development programs, serving as a parent for several fungus-resistant varieties including Muscaris, Cabernet Cortis, and Monarch, where it contributes both enhanced resilience and aromatic potential for premium wines.[10] Its ability to combine robust environmental adaptability with V. vinifera-like sensory profiles makes it a foundational element in creating next-generation PIWI (Pilzwiderstandsfähige) cultivars aimed at sustainable viticulture. In regulatory terms, Solaris is approved as a new breed within the European Union for wine production, reflecting its status as a recognized interspecific hybrid.[24] However, its non-pure V. vinifera ancestry excludes it from eligibility for Appellation d'Origine Contrôlée (AOC) designations in France under EU Regulation No 1308/2013, which restricts such protections to traditional varieties.[25] In Germany, it has been permitted for quality wine designations, including Prädikatswein, since 2016, enabling its use in higher-quality classifications and broader commercial adoption.[10]

Viticultural Properties

Vine Vigor and Yield

The Solaris vine exhibits moderate to strong vigor, characterized by bushy growth with shoots that tend to spread in multiple directions rather than strictly upright, often reaching trained heights of 1.5 to 2 meters under standard viticultural management.[26][27] This growth habit necessitates robust support systems and significant summer canopy management, including leaf removal to promote air circulation and light penetration. Due to its vigor and limited basal bud fruitfulness for spur pruning, Solaris responds best to cane pruning or Guyot training systems, which allow for the selection of renewal canes to maintain balanced fruiting wood and prevent overcropping.[28][27] Yield potential for Solaris is high and consistent, typically ranging from 8 to 12 tons per hectare in well-suited sites with fertile, well-drained soils, supported by very good basal bud fertility that ensures reliable cropping even after winter pruning.[26][28] This productivity stems from the variety's robust shoot development, with cumulative fresh shoot weights often exceeding 14 kg per vine over multiple seasons, contributing to stable annual outputs without significant alternation.[29] Its inherent disease resistance further facilitates low-input management, reducing the need for interventions that could disrupt yield consistency. Cluster morphology features medium-sized bunches weighing approximately 150 to 200 grams, with loose to medium density comprising 15 to 20 berries each; the berries themselves are small to medium (1.5 to 2 grams), round to short-oval in shape, and covered in thick, green-yellow to gold skins that provide natural protection against environmental stresses.[30][31] Solaris demonstrates early maturity, with veraison occurring about 7 days ahead of average varieties and harvest typically reachable by mid-September in German growing regions, achieving must weights of 90 to 100 °Oechsle.[26][31] This accelerated timeline, combined with high bud burst rates of 80 to 90 percent, allows for reliable fruit set. In cooler sites like Denmark or high-altitude areas, yields remain viable with optimal leaf-to-fruit ratios of 1.5 to 2 square meters per kilogram, balancing productivity and quality.[32]

Disease and Climate Resistance

Solaris exhibits high natural resistance to downy mildew (Plasmopara viticola) and powdery mildew (Erysiphe necator), enabling significant reductions in fungicide use compared to traditional Vitis vinifera varieties.[2] This resistance is attributed to key genetic loci such as Rpv10 and Rpv3.3 for downy mildew and Ren3 and Ren9 for powdery mildew, resulting in low infection rates under field conditions—often less than 3% on leaves and negligible on clusters for downy mildew, with no observable powdery mildew symptoms in organic trials.[33][34] Breeders rate its tolerance on a 1-9 scale (where 9 indicates highest resistance) at approximately 8 for both mildews, allowing up to an 80% decrease in chemical sprays while maintaining vine health.[35][33] The variety shows moderate resistance to botrytis bunch rot (Botrytis cinerea), but high resistance to black rot (Guignardia bidwellii), with infection levels typically low but requiring occasional protective measures in high-pressure environments.[2][34] For instance, botrytis resistance is rated as moderate to high (2/3 on qualitative scales), though early ripening helps minimize bunch exposure to late-season rot risks.[35] However, Solaris remains susceptible to phylloxera (Daktulosphaira vitifoliae), the root-feeding insect pest, and thus requires grafting onto resistant rootstocks in infested soils to prevent vine decline.[36] In terms of climate adaptations, Solaris offers excellent frost hardiness, with dormant buds surviving temperatures as low as -20°C, making it suitable for northern latitudes.[37] It thrives in cool, humid regions accumulating 900–1200 growing degree days, where its early maturity further aids in avoiding spring frost damage to buds.[2] Despite these strengths, the variety is sensitive to prolonged heat above 30°C, which can accelerate acidity loss in berries and affect wine balance.[35] Overall, its robust disease tolerance supports organic viticulture by minimizing interventions in challenging, wetter climates.[33]

Grape and Wine Characteristics

Berry Composition

The berries of the Solaris grape typically reach maturity with sugar levels ranging from 20 to 24° Brix, corresponding to a potential alcohol content of 11-13% by volume in the resulting must.[38][8][39] This moderate sugar accumulation supports balanced fermentation without excessive sweetness, influenced by the variety's early ripening tendency. Solaris must exhibits high total acidity, generally 7-9 g/L as tartaric acid equivalents, with a pH of 3.0-3.3 that helps preserve freshness even in warmer growing seasons.[38][8][39] The profile includes elevated malic acid levels of 3-5 g/L, contributing to a crisp, cool-climate structure suitable for white winemaking.[38][8] Aromatic compounds in Solaris berries derive from its hybrid pedigree, featuring moderate muscat-like terpenes such as linalool, alongside notes of green apple and citrus from varietal influences.[38][40] These volatiles provide a subtle floral and fruity base in the must, enhancing varietal expression without overpowering intensity. Phenolic content in the skins is low to moderate, with tannins suitable for gentle pressing to avoid astringency; notable components include flavan-3-ols like (+)-catechin (81 mg/kg fresh weight) and (-)-epicatechin (111 mg/kg fresh weight).[39][8] This restrained phenolic profile supports neutral, aromatic wines while maintaining structural integrity.

Resulting Wine Profiles

Solaris wines are renowned for their aromatic profile, typically presenting as vibrant whites with a diverse flavor spectrum that includes notes of pineapple, mango, passionfruit, peach, and elderflower, underpinned by prominent mineral acidity.[2][41] In dry styles, the emphasis shifts to crisp citrus zest and green apple, enhancing the wine's refreshing character, while off-dry variants amplify tropical fruit expressions, often evoking melon or apricot nuances.[42][43] These sensory attributes stem from the grape's high levels of esters and thiols, contributing to floral and fruity aromas that distinguish Solaris from more neutral cool-climate varieties.[44] In terms of body and structure, Solaris wines generally exhibit a light to medium body, with balanced crisp acidity derived from tartaric and malic acids, and alcohol content ranging from 11% to 13%, even in cooler growing regions.[7][43] The glycerol content, typically 4-9 g/L, imparts a soft mouthfeel that complements the acidity, resulting in wines that are approachable yet structured for cool-climate expressions.[43] Solaris demonstrates significant winemaking versatility, lending itself to still, sparkling (such as Sekt), and ice wine production due to its early ripening and capacity for high sugar accumulation.[2][45] Fermentation often employs neutral yeasts like Saccharomyces cerevisiae to preserve the grape's delicate aromatics, while oak aging is rarely utilized to avoid masking the fruit-forward profile.[46] For food pairings, these wines excel with seafood such as white fish or scallops, light salads, and goat cheese, where their acidity cuts through richness and highlights fresh ingredients.[47][48] Reviews frequently award Solaris wines scores of 85-90 points, praising their vibrant freshness and adaptability in cool-climate viticulture.[49][50]

Cultivation Regions

Primary Areas in Germany

Solaris cultivation in Germany centers on the Baden region, where it accounts for a significant portion of the variety's total planted area of 207 hectares nationwide as of 2022.[51] Baden features approximately 45 hectares dedicated to Solaris, benefiting from the area's favorable conditions for early-ripening hybrids.[52] Emerging plantings are found in Rheinhessen (53 hectares in 2023), Pfalz (39 hectares in 2023), and Franconia, reflecting gradual adoption in these traditional white wine strongholds.[53] The variety thrives on sloped sites with well-drained soils like loess and limestone at elevations between 200 and 500 meters, which support optimal drainage and frost protection.[2] Its inherent disease resistance facilitates integration into organic vineyards, enabling low-spray regimes that align with sustainable practices across these regions.[42] In terms of production, Solaris contributes to Qualitätswein bestimmter Anbaugebiete (QbA) and Prädikatswein classifications, yielding aromatic whites from early harvests. Notable producers include Staatsweingut Freiburg in Baden, known for premium expressions like Beerenauslese, and Weingut Teresa Deufel near Lake Constance, emphasizing biological farming.[54][55] Despite facing competition from dominant varieties such as Riesling, Solaris has seen steady growth due to its climate resilience, particularly in adapting to variable weather patterns. Yields for quality wines are regulated at 9-11 tons per hectare to ensure balanced fruit quality.[51][53]

International Expansion

Solaris has expanded beyond Germany into several European countries with cool climates, where its frost resistance and early ripening suit marginal viticultural zones. In the Czech Republic, particularly in the Moravia region, the variety covers approximately 121 hectares as of 2020 and is employed for both sparkling wines and varietal expressions that highlight its aromatic profile.[56] This adoption benefits from Moravia's continental conditions, similar to those in southern Germany, enabling consistent ripening even in cooler years.[56] Small plantings exist in Switzerland and Austria, with approximately 12 hectares in Austria.[36] Solaris is cultivated in alpine-influenced areas such as Valais in Switzerland and Styria in Austria.[10][36] These regions value the grape's tolerance to frost and fungal pressures, which supports low-input farming in high-rainfall, elevated sites. In Austria, Solaris contributes to the broader 883 hectares of PIWI varieties nationwide as of recent surveys, often blended into fresh, acidic whites.[36] The variety is emerging in northern Europe, including Denmark and Sweden, where it forms a key part of small-scale PIWI vineyards totaling around 175 hectares in Denmark alone.[57] In Sweden, Solaris covers about 50 hectares as of 2024.[58] In the United Kingdom, Solaris plantings have grown to 95 hectares by 2023, primarily for aromatic dry whites in southern England.[59] Small plantings also exist in Norway, Belgium, and Italy's Trentino-Alto Adige.[60] Across Canada, especially in Ontario, experimental trials highlight its potential for sustainable white wine production in cold-hardy zones.[61] Solaris plantings have expanded internationally, reaching several hundred hectares outside Germany by the mid-2020s, propelled by climate variability and rising demand for organic, resilient cultivars.[60] Local adaptations include grafting onto phylloxera-resistant rootstocks in infested soils, a common practice in established European vineyards.[1] In New World contexts like Canada, Solaris undergoes trials for low-spray sustainable whites, leveraging its disease tolerance. However, regulatory barriers persist in traditional appellations, where hybrid varieties face restrictions on varietal labeling and quality designations.[36]

References

  1. Solaris - White Wine Grape Variety | Wine-Searcher
  2. Solaris grape | Cool Climate Wine Summit 2026
  3. Solaris - Vine nursery Kiefer & Sester
  4. SOLARIS
  5. Becker Norbert | wein.plus Lexicon
  6. Ask a Wine Pro: What Is a 'PiWi' Grape? | VinePair
  7. Solaris: an In-Depth Wine Profile - Vinerra
  8. Polyphenol Composition of Skin-Contact Fermented 'Solaris ... - MDPI
  9. GM 6493 and GM 6494 - wein.plus - Lexicon
  10. Solaris - wein.plus - Lexicon
  11. https://vinovoss.com/grapes/solaris
  12. http://www.winegrowers.info/varieties/vine-varieties/Solaris.htm
  13. https://www.vivc.de/index.php?r=passport%2Fview&id=4251
  14. Merzling | wein.plus Lexicon
  15. Verification of resistance loci pyramiding in popular interspecific ...
  16. https://www.vivc.de/index.php?r=passport%2Fview&id=13399
  17. DNA-marker identification of Rpv3 and Rpv12 resistance loci in ...
  18. https://www.vivc.de/index.php?r=passport%2Fview&id=20345
  19. https://www.vivc.de/index.php?r=passport%2Fview&id=8339
  20. Muskat Ottonel (Muscato) - Grape Varieties - Austrian Wine
  21. Muskat-Ottonel | wein.plus Lexicon
  22. Breeding for black rot resistance in grapevine
  23. SOLARIS
  24. In France, Researchers are Putting Resistant Grape Varieties to the ...
  25. None
  26. Solaris - winegrowers.
  27. [PDF] Solaris - Vivai Viticoli Trentini
  28. [PDF] growth, yielding and healthiness of grapevine cultivars 'solaris' and ...
  29. Solaris - Keltertraube für den Garten kaufen - Rebschule Schmidt
  30. Solaris - Rebschule Kiefer & Sester
  31. Yield components and leaf/fruit ratio effects on quality in 'Solaris'
  32. [PDF] Resistant grapevine varieties to reduce the use of pesticides in the EU
  33. [PDF] Agronomic performance of 21 new disease resistant winegrape ...
  34. DISEASE RESISTANT GRAPEVINES FOR UK VINEYARDS
  35. Fungus-resistant grape varieties - piwi - Austrian Wine
  36. Solaris - Thomas Niedermayr
  37. Influence of Pre-Fermentation Treatments on Wine Volatile ... - NIH
  38. [PDF] Fungus resistant grape varieties as a suitable alternative for organic ...
  39. Exploring the Typicality, Sensory Space, and Chemical Composition ...
  40. Solaris - Monsoon Valley Vineyard
  41. https://boundbywine.com/collections/solaris
  42. Instrumental and sensory characterisation of Solaris white wines in Denmark
  43. Exploring the Typicality, Sensory Space, and Chemical Composition ...
  44. English Solaris wine for all tastes & budgets
  45. "Söl'ring" Solaris sparkling wine extra brut - Balthasar Ress EN
  46. Effect of Different Yeast Strains and Temperature of Fermentation on ...
  47. https://www.vivino.com/en/looe-valley-vineyard-solaris/w/8899884
  48. https://www.vivino.com/en/winnica-turnau-solaris/w/3758979
  49. Solaris Wine Reviews - Find a wine - Decanter
  50. PIWIs - Weinbau und Weinbereitung - Deutsches Weininstitut
  51. Baden Rebsorten | GermanWine.de
  52. [PDF] Weinmosternte 2023 - Statistische Bibliothek
  53. 2018 Solaris Beerenauslese - Staatsweingut Freiburg - Falstaff
  54. 2023 Solaris feinherb - Weingut Teresa Deufel - Falstaff
  55. [PDF] LIST OF GRAPE VARIETIES 2020
  56. a study on this small but fast-growing cool climate wine scene
  57. https://radlowhundred.co.uk/blogs/news/solaris-our-english-white-grape
  58. Modern European PIWI varieties in Canada
  59. PIWIS - around the World - PIWI International
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