Red heart grapefruit, also known as: grapefruit, grapefruit, red grapefruit, Latin name: Citrus paradisi Macf. Rutaceae, citrus small trees, branches slightly drape, hairless. The leaf shape and texture are similar to those of grapefruit leaves, but generally smaller, the wings are narrower and shorter, and the midribs of the young leaves are short and fine. Racemes, sparse or single-flowered; calyx glabrous; petals slightly smaller than pomelo. The fruit is oblate to a spherical shape, and the skin is yellow-orange. The constant ten clusters form spikes, which are shaped like grapes, hence the name. Smaller than pomelo, thin peel, with or without ring on the top of the fruit, 12-15 flaps, full of fruit, cotton, pink flesh, tender, juicy, refreshing, slightly aroma, slightly acidic, Individual varieties have both bitter and tingling taste; few or no seeds, multiple embryos. The fruit period is from October to November.
Red Heart Grapefruit originated in Asia and is a planted tree species. It is one of the common fruits of subtropical plants. It was used as a decorative bonsai and garden in the early days, and was taken to the islands around the Caribbean by Captain Shadak. It is one of the main raw materials for cosmetics and perfumes. In the West, the Chinese origin of Huyou is called the red heart grapefruit according to the Portuguese name; in China, the pomelo is a hybrid of pomelo and mandarin, called "Hu" pomelo. In the 19th century, the Chinese called the Chinese hybrid pomelo (Huyu), which the Portuguese particularly liked to eat, grapefruit.
Huyou is produced in Changshan, Zhejiang, China, and the price is cheap, while the red grapefruit is introduced to the United States by the Portuguese. After 150 years, it was exported to China, and the price was 5 to 10 times that of Huyou. It formed the “west grapefruit phenomenon” with the same price and different price when China joined the WTO.