Grapefruit - Tropical and Subtropical Fruits: Postharvest Physiology, Processing and Packaging - page 349

Citrus

Sweet oranges
( C. sinensis (L.) Osb)

Grapefruit
( C. paradise Macfad.)

Limes
( C. aurantifolia L.)

Lemons
( C. limon Burm. F . )

Common oranges
Blood oranges
Navel oranges
Acidless oranges

Rough lemon ( C. jambhiri )
Sweet lemon ( C. limetta )
Volkamer lemon ( C. volkamericana )

Tangerine , Mandarin or Satsuma
( C. reticulate Blanco )

Key
Ta h i t i
Sweet lime
Rangpur lime

Figure 19.1. Classification of commerically important citrus fruit crops (source: Adapted from Rieger, 2006).

Grapefruit varieties
In this section, the most noteworthy of old and new cultivars
are described. As reported by Morton (1987), 'Duncan,' a
seeded variety introduced in Florida in early 1800s, was the
leading cultivar for many years in the United States (Florida
and Texas) and was introduced into all the grapefruit-
growing areas of the world. The fruit is round or slightly

obovate; is large, at 3.5-5 in. (9-12.5 cm) wide; has a
peel that is very light yellow (usually called “white”), with
large oil glands, medium-thick, and highly aromatic; has
buff pulp, in 12-14 segments with medium-tender mem-
branous walls, very juicy, of fine flavor; and has 30-50
medium-large seeds. In the United States, it has largely
given way to cultivars with fewer seeds, but it is being grown

Ta n g e r i n e s
Oranges
Lemons & Limes
Grapefruit

90

75

60

45

30

15

0

Figure 19.2. World's top 10 total citrus fruits producers with their percentage world share in 2010
(source: Adapted from FAO, 2011).