Citrus, tangerine and orange are three different varieties of citrus fruits, which are easily confused because of their similar appearance. Citrus, is a general term for tangerine, mandarin, orange, kumquat, pomelo, hedgehog, etc. The names of mandarin and orange have long been confusing. Measured from a scientific point of view, tangerine is the basic species, small flowers, peel good, the embryo of the seed is dark green; tangerine is tangerine and sweet orange and other citrus hybrids, flowers, fruit peeling is not as good as tangerine peel, the embryo of the seed is light green. Therefore, in the wide-skinned citrus, orange citrus (rutabaga) is orange is not citrus, Wenzhou Mi orange is citrus is not orange. Citrus and orange in plant taxonomy is the same family with the genus and different species of woody plants. In addition, mandarin and orange are often collectively referred to as "citrus". The genus Citrus is the most important group of citrus fruit trees, * there are 17 species, divided into six species groups: large winged oranges, Yichang oranges, citrus lemons, grapefruit, oranges and broad-skinned oranges. Citrus fruits include a large family of oranges, tangerines, grapefruit, citrons, sweet oranges, limes, kumquats, and lemons. In order to facilitate the distinction, the characteristics of tangerine, orange, orange are as follows:
1, tangerine: for the Rutaceae plant tangerine and other kinds of citrus ripe fruit. The fruit is larger, nearly spherical, the skin is yellow, orange or orange-red, the rind is thick, spongy layer thick, loose, peeling is slightly difficult, the seeds are ovoid,. The flavor is moderately sweet and sour, and is resistant to storage.
2, tangerine: tangerine, for the Rutaceae plant Fukui tangerine or vermilion tangerine and other kinds of orange ripe fruit. There are many species, there are eight cloth tangerine, money tangerine, sweet tangerine, sour tangerine, Miyagawa, Xinjin tangerine, Ojang tangerine, Wenzhou tangerine, Sichuan tangerine and other varieties. The fruit is small, often flat and round, with orange-red, vermilion or orange-yellow skin color. The pericarp is thin and loose, the spongy layer is thin, tough and easy to peel, with 7 to 11 vesicles. Sweet or sour taste, the seeds are pointed and thin, not resistant to storage.
3, orange: refers to the rutaceae, citrus subfamily, citrus, citrus subgroup below a group of plants. Varieties of brocade orange, navel orange, etc.. Common mainly refers to sweet orange. Zhongyu No. 7 Sweet Orange" is a new sweet orange variety selected and developed by the Citrus Research Institute of Chinese Academy of Agricultural Sciences, which is nuclear-free, high-quality, high-yield, storage-resistant, and can be used for both fresh food and processing (juice making). The fruit is round or oblong, with a smooth, thin skin and a tight capsule that is not easy to peel off. The meat is moderately sweet and sour, rich in aroma.