Citrus sinensis (L.) Osbeck 

CRC 4000
PI 539557
VI 510

Source

Received as seed from Morocco (sent by Ray Copeland), 1987.

Parentage/origins

Parents unknown.

Rootstocks of accession

Carrizo citrange

Season of ripeness at Riverside

December to February

Notes and observations

EMN, 12/1989: Comments from letter from Ray Copeland: "The Sanguina Doblefina I sent in is probably the described Doblefina in Volume I, TCI. However, based on your description of the nucellar Doblefina I would say that some difference exists. The fruit on the tree from which I took the buds was quite high in peel color, showing good blood red color on all fruit. The internal color was moderate to none depending on fruit location on the tree. I believe for the U.S. market that this fruit would not be readily acceptable as a blood orange

Description from The Citrus Industry Vol. 1 (1967)

"Fruit medium-small to small, oval to oblong; virtually seedless.  Yellowish orange at maturity, more or less densely blushed with rose-colored flecks.  Rind medium-thick, firm and leathery; surface very smooth and fine-textured; tightly adherent (difficult to peel).  Flesh firm and moderately juicy, with pink flecks scattered more or less throughout; distinctive fragrance and mild, pleasant flavor.  Fruit hangs poorly on tree and drops badly, but ships and stores unusually well.  Late midseason in maturity.

Tree small and somewhat lacking in vigor, spreading and open in growth habit; foliage sparser and lighter green than most.  An early and heavy bearer.

Aside from its short season, lack of juiciness, and other faults, the Doblefina variety is highly variable and uncertain with respect to development and intensity of the blood coloration, which is often deficient or lacking.  When well developed, however, the fruit is attractive.

Of unknown Spanish origin, Doblefina was for many decades the principal blood orange variety in Spain and was favorably known in European markets.  It has been losing ground for some years, however, to other varieties of better color and richer flavor, particularly its derivative, Spanish Sanguinelli.  It is of interest to note that three blood orange varieties Entrefina, Doublefine Ameliorée, and Spanish Sanguinelli have originated as budsports from Doblefina."

Availability

Commercially available in California through the Citrus Clonal Protection Program. Click here to order budwood.

USDA Germplasm Resources Information Network page for Dobla fina blood orange (CRC 4000)

CVC Fruit Quality Data for Dobla fina blood orange CRC 4000

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