Kikudaidai sour orange hybrid

Citrus canaliculata Y. Tanaka

CRC 3565
PI 539181


Received as budwood from Ted Frolich, University of California, Los Angeles, 1962. Open-pollinated seedling.


Thought to be a hybrid between Citrus aurantium and Citrus paradisi.

Rootstocks of accession

Carrizo citrange, C-35 citrange

Season of ripeness at Riverside

December to February

Notes and observations

2/22/1988, EMN: Selected budwood from seedling at SCFS nursery, no record regarding single or multiple. The Kikudaidai was known in Japan as early as 1864 and is still grown in gardens as a curiosity. Its flower forms a very short inflorescence and leaves are rather broad with large petiole wings. This accession was heat treated about 1975 for moving out of quarantine to Lindcove.

12/15/1987, EMN: A medium-large yellow fruit. Rind is rough similar to rough lemon. Rind of medium thickness, flesh yellow, hollow core, many seeds.

2/22/1988, WPB: This is a sour orange hybrid. We should move it to that classification.

3/3/2008, DK & TS:  The tree on Carrizo is much larger than the one on C-35, though they're the same age. The tree on C-35 is rather dwarfed, sickly and chlorotic, and the fruits are smaller. The fruits are flattened on the bottom, grapefruit shaped, with a rough, lumpy yellow rind, much sunburned. Some have prominent necks; spongy white albedo; seedy; light yellow flesh, very juicy, sour, nasty aftertaste.

Description from The Citrus Industry Vol. 1 (1967)

"The Kikudaidai variety is an attractive, somewhat dwarfed ornamental with fruits that have a solid core and are medium-small, subglobose to oblate, yellowish-orange, and characteristically deeply, longitudinally grooved.  The origin of this ornamental is unknown."


Not commercially available in California.

USDA Germplasm Resources Information Network page for Citrus canaliculata


Photos by David Karp and Toni Siebert, CVC.
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