Genetic Dwarf Marsh grapefruit
Citrus paradisi Macfadyen
Photos by Toni Siebert and David Karp, CVC, 5/22/2008. Photo rights. C-35 left, Carrizo right, 25 year old trees.
Source: Received as budwood from Yuma, Arizona, 1966.
Parentage/origins: Reported to be a limb sport of Marsh grapefruit. Brought to Riverside by Paul Moore, Agric. Oper., CRC. Orig. source tree in Yuma owned by Harold Ormsby who gave budwood to Paul Moore.
Rootstocks of accession: Carrizo citrange, C-35 citrange
Season of ripeness at Riverside: February to June
Notes and observations:
1986, EMN: In 1983 H. Ormsby said he would release this clone for us so foundation budwood could be distributed. A release letter was sent to him for his signature but it was never returned; so this accession has never been released from University control in case H. Ormsby might still be thinking of patenting it. Exocortis was removed by shoot tip grafting during CCPP processing. H. Ormsby does NOT have, to our knowledge, exocortis-free budline. This budline is being maintained as VI 361 in the Lindcove Upper Trifoliate block; foundation trees were pulled.
3/18/1988, EMN: Trees are not very dwarf. Compact growth makes this an attractive tree but tree size is not much smaller than other 1983 planted grapefruit trees in this area. Fruit is typically Marsh type but runs smallish in size.
5/29/2009, DK & TS: Tree and fruit are not dwarf, but has shorter internodes, and leaves are smaller than usual for grapefruit, says Toni.
Availability: Commercially available in California through the Citrus Clonal Protection Program.
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