Vitis (grapevine) is a genus of 81 accepted species [5] of vining plants in the flowering plant family Vitaceae. The genus consists of species predominantly from the Northern Hemisphere. It is economically important as the source of grapes, both for direct consumption of the fruit and for fermentation to produce wine. The study and cultivation of grapevines is called viticulture.
Most cultivated Vitis varieties are wind-pollinated with hermaphroditic flowers containing both male and female reproductive structures, while wild species are dioecious. These flowers are grouped in bunches called inflorescences. In many species, such as Vitis vinifera, each successfully pollinated flower becomes a grape berry with the inflorescence turning into a cluster of grapes. While the flowers of the grapevines are usually very small, the berries are often large and brightly colored with sweet flavors that attract birds and other animals to disperse the seeds contained within the berries. [6]
Grapevines usually only produce fruit on shoots that came from buds that were developed during the previous growing season. In viticulture, this is one of the principles behind pruning the previous year's growth (or "One year old wood") that includes shoots that have turned hard and woody during the winter (after harvest in commercial viticulture). These vines will be pruned either into a cane which will support 8 to 15 buds or to a smaller spur which holds 2 to 3 buds. [6]
In the wild, all species of Vitis are normally dioecious, but under domestication, variants with perfect flowers appear to have been selected. Flower buds are formed late in the growing season and overwinter for blooming in spring of the next year. They produce leaf-opposed cymes. Vitis is distinguished from other genera of Vitaceae by having petals which remain joined at the tip and detach from the base to fall together as a calyptra or 'cap'. The flowers are pentamerous. The calyx is greatly reduced or nonexistent in most species. The fruit is a berry, ovoid in shape and juicy, with a two-celled ovary each containing two ovules, thus normally producing four seeds per flower (or fewer by way of aborted embryos). [7]
Other parts of the vine include the tendrils which are leaf-opposed, branched in Vitis vinifera , and are used to support the climbing plant by twining onto surrounding structures such as branches or the trellising of a vine-training system.
The genus Vitis is divided into two subgenera, Euvitis Planch. have 38 chromosomes (n=19) with berries borne on clusters [8] and Muscadinia Planch. 40 (n=20) with small clusters. [9] [10]
Wild grapes can resemble the single-seeded Menispermum canadense (moonseed), which is toxic. [11]
Most Vitis species are found mostly in the temperate regions of the Northern Hemisphere in North America and eastern Asia, exceptions being a few in the tropics and the wine grape Vitis vinifera which originated in southern Europe and southwestern Asia. Grape species occur in widely different geographical areas and show a great diversity of form.
Their growth makes leaf collection challenging and polymorphic leaves make identification of species difficult. Mature grapevines can grow up to 48 centimetres (19 inches) in diameter at breast height and reach the upper canopy of trees more than 35 metres (115 feet) in height. [12]
Many species are sufficiently closely related to allow easy interbreeding and the resultant interspecific hybrids are invariably fertile and vigorous. Thus the concept of a species is less well defined and more likely represents the identification of different ecotypes of Vitis that have evolved in distinct geographical and environmental circumstances.
The exact number of species is not certain. Plants of the World Online states 81 species are accepted, but lists 84. [5] More than 65 species in Asia are poorly defined. [13] Approximately 25 species are known in North America, and these were studied extensively in the late 1800s by German-American botanist George Englemann. [14] By contrast, just one, V. vinifera has Eurasian origins. [15] Some of the more notable species include:
Plants of the World Online also includes: [5]
There are many cultivars of grapevines; most are cultivars of V. vinifera. One of them includes, Vitis 'Ornamental Grape'.
Hybrid grapes also exist, and these are primarily crosses between V. vinifera and one or more of V. labrusca, V. riparia or V. aestivalis. Hybrids tend to be less susceptible to frost and disease (notably phylloxera), but wine from some hybrids may have a little of the characteristic "foxy" taste of V. labrusca.
The Latin word Vitis is feminine, [19] and therefore adjectival species names take feminine forms, such as V. vinifera. [20] [a]
Phylloxera is an American root aphid that devastated V. vinifera vineyards in Europe when accidentally introduced in the late 19th century. [14] Attempts were made to breed in resistance from American species, but many winemakers and customers did not like the unusual flavour profile of the hybrid vines. However, V. vinifera grafts readily onto rootstocks of the American species and their hybrids with V. vinifera, and most commercial production of grapes now relies on such grafts.
The black vine weevil is another root pest.
Grapevines are used as food plants by the larvae of some Lepidoptera species.
According to the UN's Food and Agriculture Organization (FAO), 75,866 square kilometres of the world is dedicated to grapes. Approximately 71% of world grape production is used for wine, 27% as fresh fruit, and 2% as dried fruit. A portion of grape production goes to producing grape juice to be used as a sweetener for fruits canned "with no added sugar" and "100% natural". The area dedicated to vineyards is increasing by about 2% per year.
The following list of top wine-producers shows the corresponding areas dedicated to grapes (regardless of the grapes' final destination): [22]
Country | Area under vine (ha x103) | Grape production (metric ton x106) |
---|---|---|
World | 7511 | 75.7 |
Spain | 1021 | 6.0 |
China | 830 | 12.6 |
France | 786 | 6.3 |
Italy | 682 | 8.2 |
Turkey | 497 | 3.6 |
United States | 419 | 7.0 |
Argentina | 225 | 2.4 |
Iran | 223 | 2.1 |
Portugal | 217 | |
Chile | 211 | 3.1 |
Romania | 192 | |
Australia | 149 | 1.7 |
Moldova | 140 | |
South Africa | 130 | 2.0 |
India | 120 | 2.6 |
Brazil | 85 | 1.5 |
Bulgaria | 60 | |
New Zealand | 39 |
Grapevines are widely cultivated by gardeners, and numerous suppliers cater specifically for this trade. The plants are valued for their decorative foliage, often colouring brightly in autumn; their ability to clothe walls, pergolas and arches, thus providing shade; and their fruits, which may be eaten as dessert or provide the basis for homemade wines. Popular varieties include:-
The following varieties have gained the Royal Horticultural Society's Award of Garden Merit:- [24]
The fruit of several Vitis species are grown commercially for consumption as fresh grapes and for fermentation into wine. [30] Vitis vinifera is the most important such species. [31]
The leaves of several species of grapevine are edible and are used in the production of dolmades and Vietnamese lot leaves. [32]
The grapevine (typically Vitis vinifera) has been used as a symbol since ancient times. In Greek mythology, Dionysus (called Bacchus by the Romans) was god of the vintage and, therefore, a grapevine with bunches of the fruit are among his attributes. His attendants at the Bacchanalian festivals hence had the vine as an attribute, together with the thyrsus, the latter often entwined with vine branches. For the same reason, the Greek wine cup (cantharos) is commonly decorated with the vine and grapes, wine being drunk as a libation to the god.
The grapevine has a profound symbolic meaning in Jewish tradition and culture since antiquity. [33] It is referenced 55 times in the Hebrew Bible (Old Testament), along with grapes and wine, which are also frequently mentioned (55 and 19, respectively). [34] It is regarded as one of the Seven Species, [35] [34] and is employed several times in the Bible as a symbol of the Israelites as the chosen people. [36] The grapevine has a prominent place in Jewish rituals: the wine was given a special blessing, "creator of the fruit of the vine", and the Kiddush blessing is recited over wine or grape juice on Shabbat and Jewish holidays. [34] It is also employed in various parables and sayings in rabbinic literature. [34] According to Josephus and the Mishnah, a golden vine was hung over the inner chamber of the Second Temple. The grapevine is featured on Hasmonean and Bar Kokhba revolt coinage, and as a decoration in mosaic floors of ancient synagogues. [33]
In Christian iconography, the vine also frequently appears. It is mentioned several times in the New Testament. We have the parable of the kingdom of heaven likened to the father starting to engage laborers for his vineyard. The vine is used as symbol of Jesus Christ based on his own statement, "I am the true vine (John 15:1)." In that sense, a vine is placed as sole symbol on the tomb of Constantia, the sister of Constantine the Great, and elsewhere. In Byzantine art, the vine and grapes figure in early mosaics, and on the throne of Maximianus of Ravenna it is used as a decoration.
The vine and wheat ear have been frequently used as symbol of the blood and flesh of Christ, hence figuring as symbols (bread and wine) of the Eucharist and are found depicted on ostensories. Often the symbolic vine laden with grapes is found in ecclesiastical decorations with animals biting at the grapes. At times, the vine is used as symbol of temporal blessing. [37]
In Mandaeism, uthras (angels or celestial beings) are often described as personified grapevines (gupna). [38]
A grape is a fruit, botanically a berry, of the deciduous woody vines of the flowering plant genus Vitis. Grapes are a non-climacteric type of fruit, generally occurring in clusters.
The Vitaceae are a family of flowering plants, with 14 genera and around 910 known species, including common plants such as grapevines and Virginia creeper. The family name is derived from the genus Vitis.
The Concord grape is a cultivar derived from the grape species Vitis labrusca that are used as table grapes, wine grapes and juice grapes. They are often used to make grape jelly, grape juice, grape pies, grape-flavored soft drinks, and candy. The grape is sometimes used to make wine, particularly sacramental and kosher wine. Traditionally, most commercially produced Concord wines have been finished sweet, but dry versions are possible if adequate fruit ripeness is achieved. The grape is named after the town in Massachusetts where it was developed. The grapes are cultivated in many different parts of the world now.
Grape phylloxera is an insect pest of grapevines worldwide, originally native to eastern North America. Grape phylloxera ; originally described in France as Phylloxera vastatrix; equated to the previously described Daktulosphaera vitifoliae, Phylloxera vitifoliae. The insect is commonly just called phylloxera.
Chambourcin is a variety of grapevine belonging to the Vitis genus in the flowering plant family Vitaceae. It is a French-American interspecific hybrid grape variety used for making wine. Its parentage is uncertain, but genetic studies show it likely includes several North American Vitis species in its background including: V. berlandieri Planch., V. labrusca L., V. lincecumii Buckley, V. riparia Michx., V. rupestris Scheele, and V. vinifera. The hybrid was produced by Joannes Seyve who often used Seibel hybrids produced in the 1860s. The grape has only been available since 1963; it has a good resistance to fungal disease, and is one of the parents of the new disease resistant variety, Regent, which is increasing in popularity among German grape growers.
Vitis vinifera, the common grape vine, is a species of flowering plant, native to the Mediterranean region, Central Europe, and southwestern Asia, from Morocco and Portugal north to southern Germany and east to northern Iran. As of 2012, there were between 5,000 and 10,000 varieties of Vitis vinifera grapes though only a few are of commercial significance for wine and table grape production.
Vitis rotundifolia, or muscadine, is a grapevine species native to the southeastern and south-central United States. The growth range extends from Florida to New Jersey coast, and west to eastern Texas and Oklahoma. It has been extensively cultivated since the 16th century. The plants are well-adapted to their native warm and humid climate; they need fewer chilling hours than better known varieties, and thrive in summer heat.
The scuppernong is a large variety of muscadine, a species of grape native to the southern United States. It is usually a greenish or bronze color and is similar in appearance and texture to a white grape, but rounder and larger.
Catawba is a red American grape variety used for wine as well as juice, jams and jellies. Grown predominantly on the East Coast of the United States, this purplish-red grape is a likely a hybrid of the native American Vitis labrusca and the Vitis vinifera cultivar Semillon. Its exact origins are unclear but it seems to have originated somewhere on the East coast from the Carolinas to Maryland.
Vitis labrusca, the fox grape, is a species of grapevines belonging to the Vitis genus in the flowering plant family Vitaceae. The vines are native to eastern North America and are the source of many grape cultivars, including Catawba, Concord, Delaware, Isabella, Niagara, and many hybrid grape varieties such as Agawam, Alexander and Onaka. Among the characteristics of this vine species in contrast to the European wine grape Vitis vinifera are its "slip-skin" that allows the skin of the grape berries to easily slip off when squeezed, instead of crushing the pulp, and the presence of tendrils on every node of the cane. Another contrast with European vinifera is the characteristic "foxy" musk of V. labrusca, best known to most people through the Concord grape. This musk is not related to the mammalian fox, but rather to the strong, earthy aromas characteristic of the grapes that were known by early European-American settlers in the New World. The term "foxy" became a sort of catchall for the wine tasting descriptors used for these American wines that were distinct from the familiar flavors of the European viniferous wines.
Vitis riparia Michx, with common names riverbank grape or frost grape, is a vine indigenous to North America. As a climbing or trailing vine, it is widely distributed across central and eastern Canada and the central and northeastern parts of the United States, from Quebec to Texas, and eastern Montana to Nova Scotia. There are reports of isolated populations in the northwestern USA, but these are probably naturalized. It is long-lived and capable of reaching into the upper canopy of the tallest trees. It produces dark fruit that are appealing to both birds and people, and has been used extensively in commercial viticulture as grafted rootstock and in hybrid grape breeding programs.
Vidal blanc is a white hybrid grape variety produced from the Vitis vinifera variety Ugni blanc and another hybrid variety, Rayon d'Or. It is a very winter-hardy variety that manages to produce high sugar levels in cold climates with moderate to high acidity.
Hybrid grapes are grape varieties that are the product of a crossing of two or more Vitis species. This is in contrast to crossings between grape varieties of the same species, typically Vitis vinifera, the European grapevine. Hybrid grapes are also referred to as inter-species crossings or "Modern Varieties." Due to their often excellent tolerance to powdery mildew, other fungal diseases, nematodes, and phylloxera, hybrid varieties have, to some extent, become a renewed focus for European breeding programs. The recently developed varieties are examples of newer hybrid grape varieties for European viticulturalists. Several North American breeding programs, such as those at Cornell and the University of Minnesota, focus exclusively on hybrid grapes, with active and successful programs, having created hundreds if not thousands of new varieties.
Frontenac is an interspecific hybrid grapevine that is a result of research and crossbreeding by the University of Minnesota. It was grown from a crossing of the complex interspecific hybrid Landot 4511 and a very cold-hardy selection of Vitis riparia. It was released in 1996.
This glossary of viticultural terms list some of terms and definitions involved in growing grapes for use in winemaking.
Cascade is a red complex hybrid grape variety that was created by French viticulturist Albert Seibel in the early 20th century in Aubenas, Ardèche, in the Rhône Valley. It has been commercially available in North America since 1938 and has since been planted in Canada and the United States. However, in warmer climates, the grape is highly susceptible to a number of grapevine viruses, which has discouraged plantings of the variety.
Muscat bleu is a red Swiss wine and table grape variety that is a hybrid of Garnier 15-6 and Perle noire. The grape was developed in Peissy in the Canton of Geneva by Swiss grape breeder Charles Garnier in the 1930s. Today the grape is used as both a table grape and for winemaking, producing wines that Master of Wine Jancis Robinson describe as "soft and grapey". Outside Switzerland, some plantings of Muscat bleu can also be found in Belgium.
The propagation of grapevines is an important consideration in commercial viticulture and winemaking. Grapevines, most of which belong to the Vitis vinifera family, produce one crop of fruit each growing season with a limited life span for individual vines. While some centenarian old vine examples of grape varieties exist, most grapevines are between the ages of 10 and 30 years. As vineyard owners seek to replant their vines, a number of techniques are available which may include planting a new cutting that has been selected by either clonal or mass (massal) selection. Vines can also be propagated by grafting a new plant vine upon existing rootstock or by layering one of the canes of an existing vine into the ground next to the vine and severing the connection when the new vine develops its own root system.
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: CS1 maint: others (link)Nearly all table grapes that are sold in commercial markets are V. vinifera.