The appearance of oranges is characterized by the following features: fruit oblate or pear-shaped, varying in size, large diameter up to 8 cm, small about 4 cm, the top of the fruit has a rounded protuberance and shallow radial grooves, the pedicel sometimes also has radial grooves, the peel is rough, the concave point is uniform, the oil cells are large, the skin is 2-4 mm thick, light yellow.
The orange originated in Southeast Asia. Orange tree is a small tree. The fruit can be peeled and eaten fresh for its pulp, which can be used as a seasoning or addition to other foods. Oranges are the fruit of the orange tree of the genus Citrus in the family Rutaceae, also known as the yellow fruit, citrus, golden ring, willow tinsel. Oranges are a citrus fruit with high edible and medicinal value.
Expanded Information:
Oranges are mainly divided into sweet oranges, navel oranges, blood oranges, bing sugar oranges, red oranges several varieties, have their own characteristics. Specifically as follows:
1, sweet orange: the fruit is usually round orange, the top without navel or round mark. Sugar orange, also known as sour orange, similar in shape to the ordinary orange.
2, navel orange: the fruit is larger than the average orange, usually seedless. Its main feature is that the fruit has a conical by-product, which is characterized by a navel at the top of the fruit, that is, the top of the fruit has a small undeveloped fruit. Seedless, the flesh is crisp and tender, slightly sweet and sour flavor.
3, blood orange: pulp and juice is purple or dark red. The Mediterranean region is the origin and main source of its delicate and juicy flesh, with a special flavor.
4, Bingsugar Orange: Bingsugar Orange is an excellent variety of Big Red Sweet Orange in Qianyang City, Hunan Province. The flavor is strong and sweet, the skin is thin, toothless, and the flesh is crispy. Cultivated in Sichuan, Chongqing, Guizhou, Yunnan, Guangdong and other provinces.
5, red orange: Lianjiang red orange fruit is large (each fruit weighs about 150 grams), good fruit shape, orange-red flesh, tender, smooth, juicy after juice, sweet and sour, sweet.
Baidu Encyclopedia - Oranges