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Actinidia chinensis

Actinidia chinensis is a fruiting vine native to China. It is one of some 40 related species of the genus Actinidia, and the origin of most commercial varieties of kiwifruit.

Taxonomy
The taxon was first formally described in 1857 by French botanist Jules Émile Planchon, who used plants collected by Robert Fortune, who was sent to China by the Horticultural Society of London to collect plants in the aftermath of the First Opium War. Fortune's specimen was likely collected around the year 1845. The type specimen is held at the Royal Botanic Gardens, Kew. The second, Actinidia chinensis var. setosa, or the Taiwanese kiwifruit, was identified in 1952 by Hui-lin Li. Other varieties have been proposed which have since been synonymised with Actinidia chinensis var.chinensis, including Actinidia chinensis var. jinggangshanensis, Actinidia chinensis var. lageniformis, Actinidia chinensis var. latifolia, Actinidia chinensis var. nephrocarpa, Actinidia chinensis var. rufopulpa and Actinidia multipetaloides. Phylogenetic analysis has shown that Actinidia chinensis var. setosa and Actinidia chinensis var. deliciosa are more closely related to each other than to Actinidia chinensis var. chinensis. ==Description==
Description
Actinidia chinensis has a smooth, bronze skin, with a beak shape at the stem attachment. Flesh colour varies from bright green to a clear, intense yellow. Fruit colour may vary from green to lime green or gold, depending on breeding. 'Hort16A' is a golden kiwifruit cultivar marketed worldwide as Zespri Gold, This cultivar is marketed as Zespri SunGold. ==Habitat==
Habitat
In its native habitat, Actinidia chinensis grows in thickets, thick (oak) forests (e.g. Quercus aquifolioides, Quercus oxyodon, Quercus lamellosa), and light secondary forests and bushland. A. chinensis prefers slopes and likes also to grow in ravines, top heights of , relative to the local microclimate. In Western gardens it may range in all directions, making it unsuitable for all but the largest spaces unless pruned back hard at the end of every growing season. ==Range==
Range
Actinidia chinensis is found in southern China and Taiwan. Actinidia chinensis var. deliciosa grows in inland forested areas of southwestern China, while Actinidia chinensis var. chinensis typically grows in warmer coastal provinces of southeastern China. The two varieties have overlapping ranges in southeastern Shaanxi, southwestern Henan, western Hubei and Hunan, where intermediate forms can be found. Actinidia chinensis var. setosa is endemic to Taiwan. ==Varieties==
Varieties
Three varieties are accepted. • Actinidia chinensis var. chinensis – central and southern China • Actinidia chinensis var. deliciosa – central and southern China • Actinidia chinensis var. setosa – Taiwan ==History==
History
Province Traditional Chinese names for the fruit include míhóutáo (), húlítáo (), ténglí () and yángtáo (), however no traditional distinction existed between Actinidia chinensis and Actinidia deliciosa, with míhóutáo and yángtáo being names used to refer to both varieties. The first known references to Actinidia plants in China date to the Tang dynasty in the 800s, when sporadic attempts were made to cultivate the fruit. This includes a Tang Dynasty poem written by Cen Shen, set in Shaanxi, which describes a plant growing above a well; suggesting that the plant may have been cultivated in gardens during this period. In the Běncǎo Yǎnyì (), a 12th century medicinal compendium by Kou Zongshi, describes the plant as growing along pathways deep in the mountains of China, and notes that monkeys eat the fruit. Cultivation of Actinidia chinensis var. deliciosa began in New Zealand in the early 20th century after Mary Isabel Fraser, the principal of Whanganui Girls' College, brought seeds of the plant back to New Zealand. Over time, numerous cultivars were developed by different growers, all originating from the same plant material that was brought to New Zealand by Fraser. In 1957, the China National Botanical Garden sourced wild Actinidia chinensis var. deliciosa seeds from the Qinling mountains of Shaanxi, growing the first specimens in a botanical institute in China. These surveys revealed the potential for golden and red Actinidia chinensis var. chinensis varieties to become cultivated commercial crops. ==Gallery==
Gallery
Golden kiwi.jpg|Actinidia chinensis var. chinensis gold kiwifruit variety Red Kiwi.jpg|Actinidia chinensis var. chinensis red kiwifruit variety Kiwi (Actinidia chinensis) 1 Luc Viatour.jpg|Actinidia chinensis var. deliciosa green variety Actinidia chinensis - Austins Ferry.jpg|Actinidia chinensis var. deliciosa fruit growing on vines Actinidia setosa 47804202.jpg|Wild Actinidia chinensis var. setosa fruit Actinidia setosa 169718438 (cropped).jpg|Wild Actinidia chinensis var. setosa fruit Actinidia chinensis1.jpg|Foliage ==References==
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