Chinotto sour orange hybrid (CRC 3728)
Citrus myrtifolia Rafinesque
Photos by David Karp, CVC, 2/11/2008 . Photo rights.
Source: Received as budwood from Dr. Joe Furr, USDA Date & Citrus Station, Indio, Ca, 1970.
Parentage/origins: Parents unknown.
Rootstocks of accession: Carrizo citrange, C-35 citrange
Season of ripeness at Riverside: January to March
Notes and observations:
2/26/1988, EMN: Darker green foliage than Chinotto at this time. An attractive compact tree but few fruit. Fruit similar to Chinotto, may be slightly smaller, slightly smoother rind, and slightly lighter rind color. Interior similar to Chinotto but coarser, dryer, more sour.
2/11/2008, DK: Noelle Barkley et al., Assessing genetic diversity, Theor Appl Genet (2006) 112: 1519Ð1531: Bar graph on p. 325 shows that Chinotto 3728 [#333 on her chart] is of about 40% pummelo, and 40% citron--more citron than is indicated for most other sour orange accessions.
Description from The Citrus Industry Vol. 1 (1967):
"Because it somewhat resembles the sour orange, the myrtle-leaf orange (chinotto of Italy, chinois of France) is commonly considered to be a botanical variety of C. aurantium L. Indeed, the presumption is that the myrtle-leaf orange originated as a mutation from the sour orange. The differences are sufficiently great and the degree of variation exhibited so wide, however, as to appear to justify separate species standing.
Availability: Not commercially available in California.
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