Nansho Daidai sour orange
Citrus taiwanica Tan. & Shimada
Photos by David Karp and Toni Siebert, CVC, 2/11/2008. Photo rights.
Source: Received as budwood and grown as a cutting via W.T. Swingle, USDA, Washington DC, 1935.
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: About half of crop is on the ground. Fruit about grapefruit sized. Rind dark yellow, moderately rough & pebbled; oblate shaped. Rind moderately thick; seedy. Flesh lemon yellow to light orange/ yellow, juicy, sour.
2/11/2008, TS & DK: Slightly necked, yellowish fruit, very sour and bitter; very few fruits left on tree, and not that many under it Noelle Barkley et al., “Assessing genetic diversity…”, Theor Appl Genet (2006) 112: 1519–1531: Bar graph on p. 325 shows that Nansho Daidai is of about 60% pummelo, and 40% mandarin--more mandarin than is indicated for most other sour orange accessions.
Description from The Citrus Industry Vol. 1 (1967):
" Fruit medium-large, obovate; broadly necked and narrowly collared; seedy. Rind medium-thick but easily peeled; somewhat pebbled; prominent sunken oil glands; color lemon-yellow. Sections 10 to 12 and axis open. Flesh color dull yellow; juicy; acid flavor with bitter aftertaste. Seeds large, slimy, with wrinkled seed coat, and polyembryonic.
Availability: Not commercially available in California.
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