Breadcrumb

Shiranui mandarin

Citrus reticulata Blanco

CRC 4249
VI 860


Source

Although there aren't many details available, we do know this accession was imported into China (Citrus Research Institute @ Chongqing) from Japan circa 1993, and then in 2012 it was submitted to the CCPP for cleanup (Source tree LR0370 10 years old, rootstock = trifoliate). The CVC received budwood of this variety from CCPP-Rubidoux in December 2016 as soon as it was released from quarantine.


Parentage/origins

Hybrid of 'Kiyomi' tangor (Citrus unshiu Marc. X Citrus sinensis Osb.) and 'Ponkan' (Citrus reticulata Bla.)


Rootstocks of accession

Carrizo citrange


Season of ripeness at Riverside

December to February


Notes and observations

RRK, 06/10/2017: 'Dekopon' is a highly sweet and expensive hybrid between ChungGyun mandarins and Ponkan that are grown in Japan and Korea, presumed to be first cultivated in the early 1990's. They have been increasingly common in the Brazilian state of Sao Paulo.

"'Dekopon' fruit is quite distinctive due to its sweet taste, large size and to its quite large protruding bump on the top of the fruit. Its name is most likely derived from a Portmanteau between the kanji (deko; meaning 'uneven') as a reference to its protruding bump, and the 'Pon' in Ponkan (one of the fruits that it is derived from) to create 'Dekopon'.

"Due to both its size and sweetness, 'Dekopon' fruits are quite expensive. One fruit costs roughly Y750 (US$6.60). The fruits are usually grown in large greenhouses to keep them at a constant temperature, and are harvested during January (winter in Japan). After harvesting, 'Dekopon' fruits are usually left for a period of 20-40 days so that the levels of citric acid in the fruit lower while the sugar levels increase, to make a more appealing taste for the market.

"'Dekopon' fruits have become quite popular in Japan, with the chewing candy brand giant Hi-Chew even making a Dekopon flavour.

"There are many market names for 'Dekopon'. For instance, 'Dekopon' is the market name for the fruits originating from Kumamoto. The ones grown in Hiroshima are marketed as 'Kiyopon'. The ones grown and marketed in Korea are called 'Hallabong' named after Hallasan the mountain located in Jeju-do, where it is primarily grown.

"Brazilian farmers have succeeded in adapting the variety to tropical to temperate climate in the highlands of Sao Paulo state. The work is done by farmers of Japanese origins. 'Dekopon' is easily harvested from May to September. In the high season for 'Dekopon', each fruit costs around US$ 0.50 at the Brazilian street market and supermarkets. Source: http://en.wikipedia.org/wiki/Dekopon

TJSW, 12/12/2019: The CVC accession had fruit for the first time, even though the trees were just planted last year. Approximately a dozen fruit on each of two trees. Externally the fruit appears mostly correct in size, shape and all have the characteristic large neck, see photos.  However, I opened a few of the fruit and was surprised to see many seeds.

DK, 02/09/2020: there are three accessions of ’Shiranui’ legally present (i.e., they have gone through CCPP therapy, testing, and release) in California:
1) The original importation, brought in by Sunkist Japan for Stark Bros. in 1998; control passed to a group led by Suntreat, which was bought by Agricultural Capital; they also own the registered trademark for Sumo Citrus®.
2) The publicly available ’Shiranui’, VI 860 in the CCPP system, which is described as coming from "CNASS, China”.
3) A private accession of a Brazilian strain of ’Shiranui’ called Guilietta.
These are all supposed to be the same basic cultivar, and thus very similar, and as far as I know they are.

01/2022, TJSW:  The publicly available ’Shiranui’ (VI 860) remains seedy in both Riverside and Exeter locations. We have spoken to a few growers of ’Shiranui’ (VI 860) about this issue. They have told us their ’Shiranui’ (VI 860) fruits are seedless but are also grown in isolation with pollen sources reported to be "far away".  A grower of one of the other introductions of 'Shiranui' reported that their fruit will get seeds depending on nearby pollen sources, especially pummelos. Therefore, ’Shiranui’ (VI 860) is likely self-incompatible. 


Availability

Commercially available in California through the Citrus Clonal Protection ProgramClick here to order budwood.


USDA Germplasm Resources Information Network page for Shiranui mandarin

 

CVC Fruit Quality data for Shiranui mandarin

Controls used in evaluations was Tango mandarin.

CULTIVAR LOCATION DATE ROOT AGE SSC1 (%) SSC2 (%) Mean SSC tit1 (V/ml) tit2 (V/ml) Mean tit Citric acid (%) SSC/TA # FRUIT HEIGHT AVE. HEIGHT WIDTH AVG. WIDTH H/W WEIGHT AVG. WT. COLOR TEXTURE RIND SEEDS AVG. SEEDS INTERIOR  JUICE WT.  % JUICE
Shiranui RIVERSIDE 11/30/2020 CZO 2 13.00 13.10 13.05 4.881 4.774 4.828 1.15 11.38 5 37.50 7.50 39.90 7.98 0.94 1164.00 232.80 6.20 5.50 16.00 0.00 0.00 5 DK YELL 547.00 46.99
Shiranui RIVERSIDE 11/30/2020 CZO 2 14.50 14.60 14.55 4.700 4.649 4.675 1.10 13.18 6 44.20 7.37 44.70 7.45 0.99 1213.20 202.20 7.00 5.00 17.00 1.00 0.17 6 DK YELL/LT OR 590.80 48.70
Shiranui LREC 11/30/2020 CZO 3 9.10 9.10 9.10 3.447 3.324 3.386 0.82 11.14 8 62.80 7.85 65.90 8.24 0.95 2181.00 272.63 5.00 4.80 24.00 52.00 6.50 10 LT/MED OR 845.60 38.77
Shiranui LREC 11/30/2020 C35 3 9.6 9.7 9.65 3.678 3.583 3.631 0.87 11.04 10 94.30 9.43 91.50 9.15 1.03 3644.40 364.44 5.75 6.50 45.00 54.00 5.40 10 LT/MED OR 1507.20 41.36
Shiranui RIVERSIDE 12/14/2020 CZO 2 13.90 13.90 13.90 3.752 3.421 3.587 0.85 16.37 5 42.50 8.50 45.90 9.18 0.93 1706.40 341.28 10.00 6.50 25.00 0.00 0.00 10 LT OR 678.40 39.76
Shiranui LREC 12/14/2020 C35 3 10.2 10.2 10.20 3.815 3.976 3.896 0.94 10.90 8 75.40 9.43 76.70 9.59 0.98 3123.40 390.43 7.00 5.00 35.00 40.00 5.00 10 LT OR 1173.60 37.57
Shiranui RIVERSIDE 1/4/2021 CZO 3 15.70 15.60 15.65 4.379 4.376 4.378 1.03 15.21 5 43.30 8.66 43.00 8.60 1.01 1492.40 298.48 10.50 7.50 20.00 1.00 0.20 10 LT OR 621.20 41.62
Shiranui RIVERSIDE 1/25/2021 CZO 3 15.00 15.00 15.00 4.456 4.644 4.550 1.07 13.99 5 44.90 8.98 42.10 8.42 1.07 1469.00 293.80 11.50 8.00 20.00 0.00 0.00 10 MED OR 618.80 42.12
Shiranui RIVERSIDE 11/29/2021 CZO 3 13.70 13.60 13.65 6.290 6.442 6.366 1.51 9.05 10 62.10 6.21 61.40 6.14 1.01 1152.20 115.22 8.00 4.50 29.00 74.00 7.40 10 LT OR 581.40 50.46
Shiranui RIVERSIDE 11/29/2021 CZO 3 13.20 13.30 13.25 5.538 5.694 5.616 1.33 9.94 6 43.10 7.18 40.30 6.72 1.07 910.00 151.67 8.00 4.00 18.00 51.00 8.50 10 LT OR 444.60 48.86
Shiranui LREC 12/1/2021 CZO 4 10.80 10.70 10.75 2.662 2.673 2.668 0.64 16.81 10 71.60 7.16 69.40 6.94 1.03 1735.80 173.58 10.50 4.50 36.00 86.00 8.60 10 LT/MED OR 828.60 47.74
Shiranui LREC 12/1/2021 C35 4 11.70 11.70 11.70 3.139 3.204 3.172 0.76 15.44 9 66.60 7.40 65.50 7.28 1.02 1798.00 199.78 11.00 5.00 41.00 42.00 4.67 10 LT/MED OR 773.60 43.03
Shiranui RIVERSIDE 12/13/2021 CZO 3 13.80 13.80 13.80 5.556 5.669 5.613 1.33 10.38 10 65.30 6.53 63.60 6.36 1.03 1252.00 125.20 9.00 3.50 36.00 59.00 5.90 10 LT OR 585.20 46.74
Shiranui RIVERSIDE 12/13/2021 CZO 3 13.40 13.40 13.40 5.944 5.748 5.846 1.39 9.66 8 52.70 6.59 68.70 8.59 0.77 911.00 113.88 8.50 4.00 22.00 8.00 1.00 10 LT OR 451.00 49.51
Shiranui LREC 12/13/2021 CZO 4 10.60 10.60 10.60 2.634 2.776 2.705 0.65 16.33 10 74.20 7.42 72.60 7.26 1.02 1882.40 188.24 9.00 5.00 38.00 84.00 8.40 10 LT/MED OR 792.80 42.12
Shiranui LREC 12/13/2021 C35 4 11.10 11.10 11.10 2.719 2.785 2.752 0.66 16.85 10 78.00 7.80 76.00 7.60 1.03 2171.40 217.14 9.50 4.50 39.00 82.00 8.20 10 LT/MED OR 840.60 38.71
Shiranui RIVERSIDE 1/3/2022 CZO 4 13.60 13.60 13.60 5.116 5.150 5.133 1.22 11.18 10 64.50 6.45 63.00 6.30 1.02 1262.20 126.22 10.00 3.50 33.00 85.00 8.50 10 LT OR 624.00 49.44
Shiranui RIVERSIDE 1/3/2022 CZO 4 13.20 13.20 13.20 4.718 4.830 4.774 1.13 11.65 8 46.60 5.83 48.40 6.05 0.96 802.20 100.28 10.00 3.50 20.00 10.00 1.25 10 LT OR 395.40 49.29
Shiranui LREC 1/3/2022 CZO 5 10.30 10.20 10.25 2.614 2.551 2.612 0.62 18.92 10 68.80 6.88 69.70 6.97 0.99 1706.80 170.68 11.80 3.50 33.00 81.00 8.10 10 LT/MED OR 838.60 49.13
Shiranui LREC 1/3/2022 C35 5 10.50 10.50 10.50 6.038 5.940 2.583 0.62 16.52 10 66.90 6.69 66.20 6.62 1.01 1503.00 150.30 11.80 4.00 31.00 14.00 1.40 10 LT/MED OR 696.60 46.35
Shiranui LREC 1/21/2022 CZO 5 11.00 11.00 11.00 2.448 2.508 2.478 0.59 18.53 10 76.00 7.60 72.70 7.27 1.05 2020.80 202.08 11.00 4.50 33.00 97.00 9.70 10 LT/MED OR 915.80 45.32
Shiranui LREC 1/21/2022 C35 5 10.00 9.90 9.95 2.309 2.344 2.327 0.56 17.78 5 34.50 6.90 34.20 6.84 1.01 794.40 158.88 11.00 4.50 14.00 19.00 3.80 10 LT/MED OR 351.20 44.21
Shiranui RIVERSIDE 1/24/2022 CZO 4 13.70 13.60 13.65 5.960 5.845 5.903 1.40 9.76 10 64.40 6.44 63.30 6.33 1.02 1267.00 126.70 10.50 3.00 23.00 95.00 9.50 10 LT OR 676.60 53.40
Shiranui LREC 11/28/2022 CZO 4 11.90 12.00 11.95 3.057 3.142 3.100 0.74 16.16 10 75.10 7.51 72.30 7.23 1.04 1940.80 194.08 10.00 5.00 32.00 19.00 1.90 10 OR 847.40 43.66
Shiranui LREC 11/28/2022 C35 4 12.20 12.20 12.20 4.126 4.002 4.064 0.97 12.59 10 80.70 8.07 73.10 7.31 1.10 2118.40 211.84 10.00 4.00 29.00 18.00 1.80 10 OR 997.00 47.06
Shiranui LREC 12/12/2022 CZO 4 12.50 12.60 12.55 2.992 2.994 2.993 0.71 17.61 10 72.50 7.25 68.80 6.88 1.05 1718.40 171.84 9.00 4.50 37.00 19.00 1.90 10  OR 703.60 40.95
Shiranui LREC 12/12/2022 C35 4 12.20 12.20 12.20 3.720 3.694 3.707 0.88 13.81 10 78.00 7.80 74.00 7.40 1.05 2077.00 207.70 9.00 4.50 39.00 18.00 1.80 10  OR 1180.80 56.85
Shiranui LREC 1/2/2023 CZO 6 11.10 11.20 11.15 2.792 2.724 2.758 0.66 16.89 10 71.80 7.18 69.00 6.90 1.04 1730.00 173.00 9.00 4.00 30.00 40.00 4.00 10 MED OR 814.20 47.06
Shiranui LREC 1/2/2023 C35 6 12.70 12.80 12.75 3.155 2.974 3.065 0.73 17.49 10 81.70 8.17 74.90 7.49 1.09 2242.40 224.24 10.00 4.50 37.00 20.00 2.00 10 MED OR 959.80 42.80
Shiranui LREC 1/18/2023 CZO 6 10.40 10.40 10.40 2.762 2.800 2.781 0.67 15.57 10 71.00 7.10 69.80 6.98 1.02 1765.80 176.58 10.00 3.50 24.00 28.00 2.80 3 LT OR, 7 MED OR 602.80 34.14
Shiranui LREC 1/18/2023 C35 6 10.60 10.70 10.65 3.287 3.233 3.260 0.78 13.62 10 74.10 7.41 69.40 6.94 1.07 1851.00 185.10 10.00 3.50 27.00 28.00 2.80 3 LT OR, 7 MED OR 588.60 31.80

 

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Photos by Toni Siebert and Karene Trunnelle, 12/2019, CVC.
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