Sweet Oranges (Navel)

Synonyms

Citrus aurantium [var.] sinensis L.; Aurantium sinensis; Citrus aurantium Lour. (non L.); C. aurantium Risso (non L.); C. aurantium [var.] vulgare; C. aurantium [var.] dulce Hayne. (sec. Swingle and Reece 1967)

Cultivar or taxon

Citrus x aurantium L., pro sp. [Sweet Orange Group] (sensu Mabberley 1997, Bayer et al. 2009); Citrus sinensis (L.) Osbeck (sensu Swingle and Reece 1967; sensu Tanaka sec. Cottin 2002)

Description

Crown compact or dense, not weeping. First-year twig surface glabrous; second- or third-year twig surface striate; thorns absent or not persistent or straight; prickles absent or not persistent. Petiole glabrous, length short or medium; wings absent, if present, narrow, medium or wide, adjoining the blade. Leaflets one, margin entire, crenate/crenulate or bluntly toothed, shade leaflet blades flat or weakly or strongly conduplicate, sun leaflet blades flat, weakly or strongly conduplicate. Scent of crushed leaflets sweetly orange-like, spicy, or peppery. Fruit as broad as long or longer than broad; rarely broader than long, rind yellow (7-10), yellow-orange (11), orange (12), red-orange (13), and rarely green-yellow (6); rind texture smooth (1-3), slightly rough (4-5), medium rough (6-7), or rough (8); firmness leathery; navel absent or present; flesh orange or red/purplish-tinged; taste acidic-sweet.

References

Bayer, R.J., D.J. Mabberley, C. Morton, C.H. Miller, I.K. Sharma, B.E. Pfeil, S. Rich, R. Hitchcock, and S. Sykes. 2009. A molecular phylogeny of the orange subfamily (Rutaceae: Aurantioideae) using nine cpDNA sequences. American Journal of Botany 96: 668–685.

Cottin, R. 2002. Citrus of the World: A citrus directory. Version 2.0. France: SRA INRA-CIRAD.

Mabberley, D.J. 1997. A classification for edible Citrus (Rutaceae). Telopea 7: 167–172.

Swingle, W.T. and P.C. Reece. 1967. The botany of Citrus and its wild relatives. In: Reuther, W., H.J. Webber, and L.D. Batchelor (eds.). The Citrus industry. Ed. 2. Vol. I. University of California, Riverside. http://lib.ucr.edu/agnic/webber/Vol1/Chapter3.html.

Resources

Search for this cultivar in NCBI Entrez, NCBI Nucleotide, or NCBI Expressed Sequence Tags