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apple : ウィキペディア英語版
apple

The apple tree (''Malus domestica'') is a deciduous tree in the rose family best known for its sweet, pomaceous fruit, the apple. It is cultivated worldwide as a fruit tree, and is the most widely grown species in the genus ''Malus. ''The tree originated in Central Asia, where its wild ancestor, ''Malus sieversii'', is still found today. Apples have been grown for thousands of years in Asia and Europe, and were brought to North America by European colonists. Apples have religious and mythological significance in many cultures, including Norse, Greek and European Christian traditions.
Apple trees are large if grown from seed, but small if grafted onto roots (rootstock). There are more than 7,500 known cultivars of apples, resulting in a range of desired characteristics. Different cultivars are bred for various tastes and uses, including cooking, eating raw and cider production. Apples are generally propagated by grafting, although wild apples grow readily from seed. Trees and fruit are prone to a number of fungal, bacterial and pest problems, which can be controlled by a number of organic and non-organic means. In 2010, the fruit's genome was decoded as part of research on disease control and selective breeding in apple production.
About 80 million tons of apples were grown worldwide in 2013, and China produced almost half of this total.〔(【引用サイトリンク】title=FAO production data )〕 The United States is the second-leading producer, with more than 6% of world production. Turkey is third, followed by Italy, India and Poland. Apples are often eaten raw, but can also be found in many prepared foods (especially desserts) and drinks. Many beneficial health effects are thought to result from eating apples; however, two types of allergies are attributed to various proteins found in the fruit.
==Botanical information==

The apple is a deciduous tree, generally standing tall in cultivation and up to in the wild.〔(【引用サイトリンク】title=Types and names of Apple Trees, Species of the Malus Genus )〕 When cultivated, the size, shape and branch density are determined by rootstock selection and trimming method. The leaves are alternately arranged dark green-colored simple ovals with serrated margins and slightly downy undersides.〔
Blossoms are produced in spring simultaneously with the budding of the leaves, and are produced on spurs and some long shoots. The flowers are white with a pink tinge that gradually fades, five petaled, with an inflorescence consisting of a cyme with 4–6 flowers. The central flower of the inflorescence is called the "king bloom"; it opens first, and can develop a larger fruit.〔〔(【引用サイトリンク】title=Apple )
The fruit matures in late summer or autumn, and varieties exist with a wide range of sizes. Commercial growers aim to produce an apple that is in diameter, due to market preference. Some consumers, especially those in Japan, prefer a larger apple, while apples below are generally used for making juice and have little fresh market value. The skin of ripe apples is generally red, yellow, green, pink, or russetted although many bi- or tri-colored varieties may be found. The skin may also be wholly or partly russeted i.e. rough and brown. The skin is covered in a protective layer of epicuticular wax, The flesh is generally pale yellowish-white,〔 though pink or yellow flesh is also known.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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