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Orange
The orange (specifically, the sweet orange) is the fruit of the citrus species Citrus × sinensis in the family Rutaceae.[2]

The fruit of the Citrus × sinensis is considered a sweet orange, whereas the fruit of the Citrus × aurantium is considered a bitter orange. The sweet orange reproduces asexually (apomixis through nucellar embryony); varieties of sweet orange arise through mutations.[3]

The orange is a hybrid, between pomelo (Citrus maxima) and mandarin (Citrus reticulata). It has genes that are ~25% pomelo and ~75% mandarin;[3][4] however, it is not a simple backcrossed BC1 hybrid, but hybridized over multiple generations.[5] The chloroplast genes, and therefore the maternal line, seem to be pomelo.[3] The sweet orange has had its full genome sequenced.[3] Earlier estimates of the percentage of pomelo genes varying from ~50% to 6% have been reported.[4] [1] Oranges in FloridaSweet oranges were mentioned in Chinese literature in 314 BC.[3] As of 1987, orange trees were found to be the most cultivated fruit tree in the world.[6] Orange trees are widely grown in tropical and subtropical climates for their sweet fruit. The fruit of the orange tree can be eaten fresh, or processed for its juice or fragrant peel.[7] As of 2012, sweet oranges accounted for approximately 70% of citrus production.[8]

In 2013, 71.4 million metric tons of oranges were grown worldwide, production being highest in Brazil and the U.S. states of Florida and California.[9]

Orange color

Orange is also a color! Orange is the colour of saffron, carrots, pumpkins and apricots. It is between red and yellow on the spectrum of light, and in the traditional colour wheel used by painters. Its name is derived from the fruit orange.

In Europe and America, orange is commonly associated with amusement, the unconventional, extroverts, fire, activity, danger, taste and aroma, the autumn season, and Protestantism. In Asia, it is an important symbolic colour of Buddhism and Hinduism.[1]