Kharna sour orange hybrid
Citrus kharna Raf.
Citrus aurantium var. khatta
Photos by David Karp, CVC, 2/11/2008. Photo rights.
Source: Received as seed from H.S. Gentry, USDA, Beltsville, Maryland, 1954.
Parentage/origins: Parents unknown, may be a lemon or citron hybrid. From Wandriker Farms, Poona, Maharashtra State, India.
Rootstocks of accession: Carrizo citrange, C-35 citrange
Season of ripeness at Riverside: January to March
Notes and observations:
2/11/2008, RRK: From Ranjit Singh, Indigenous Citrus Germplasm in India: Citrus karna (karna-khatta, id-nimbu, jamuri, khatta nimbu, karna)...the leaves and flowers...similar to rough lemon but larger in size....
2/11/2008, TW & DK: Round to oblong, looks like a sour orange with a rough rind, and a nipple, said to be a lemon hybrid; thick rind. Thick rind, may be citron hybrid, but relatively tender flesh; low seed count; hyper sour, orange flesh.
Description from The Citrus Industry Vol. 1 (1967):
"Karna (Kharna Khatta, Karna Nimbu, Khatta Nimbu) [C. karna Raf.]
Fruit medium to medium large, of variable form but in general round to oval; usually with broad and prominent nipple, sometimes depressed or lacking. Rind moderately thick, firm; surface smooth, warty or ribbed; tightly adherent; color golden yellow to deep orange. Segments about 11; axis medium-large and semi-hollow to solid. Flesh color dull orange; coarse-textured, only moderately juicy; flavor acid with faint aroma suggestive of sour orange. Seeds numerous, somewhat slimy, and moderately polyembryonic.
Availability: Not commercially available in California.
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