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Fruit anatomy is the plant anatomy of the internal structure of fruit. [ 6 ] [ 7 ] In berries and drupes , the pericarp forms the edible tissue around the seeds. In other fruits such as citrus and stone fruits ( Prunus ) only some layers of the pericarp are eaten.
Citrus fruits clustered by genetic similarity. Most commercial varieties of citrus are hybrids of the three species at the corners of the ternary diagram (mandarin at top). Genetically distinct hybrids often bear the same common name. [15] Tangelos, a generic term for modern mandarin (tangerine) × pomelo and mandarin × grapefruit crosses
The tangerine is a type of citrus fruit that is orange in color, that is considered either a variety of Citrus reticulata, the mandarin orange, or a closely related species, under the name Citrus tangerina, [1] [2] [3] or yet as a hybrid (Citrus × tangerina) of mandarin orange varieties, with some pomelo contribution.
A mandarin orange (Citrus reticulata), often simply called mandarin, is a small, rounded citrus tree fruit. Treated as a distinct species of orange , it is usually eaten plain or in fruit salads. The mandarin is small and oblate, unlike the roughly spherical sweet orange (which is a mandarin- pomelo hybrid ).
A clementine (Citrus × clementina) is a tangor, a citrus fruit hybrid between a willowleaf mandarin orange (C. × deliciosa) and a sweet orange (C. × sinensis), [1] [2] [3] named in honor of Clément Rodier, a French missionary who first discovered and propagated the cultivar in Algeria. [4]
Ponkan (Hokkien Chinese: 椪柑; Pe̍h-ōe-jī: phòng-kam); Citrus poonensis; "Chinese Honey Orange") is a high-yield sweet Citrus cultivar with large fruits in the size of an orange. It is a citrus hybrid (mandarin × pomelo), [1] though it was once thought to be a pure mandarin. [2] [3]
The Murcott arose out of citrus pioneer Walter Tennyson Swingle's attempts to produce novel citrus hybrids. Its seed parent has been identified as the King tangelo; the pollen parent remains to be identified. [4] About 1913, he gave a hybrid tree he had produced at a US Department of Agriculture planting to R. D. Hoyt at Safety Harbor, Florida ...
Frost was trying to cross two mandarin varieties, King and Dancy, to combine the late ripening of the King tangor with the richness in flavor of Dancy. The result was Kincy, which was large and seedy. Pixie is the second generation progeny of an open pollinated seedling of Kincy; the male parent is uncertain.