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Redblush grapefruit

Citrus paradisi Macfadyen

 

CRC 2850

PI 539467

VI 31

REDBLUSHREDBLUSH 

REDBLUSHREDBLUSH

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 seed from Texas at an unknown date.

 

Parentage/origins:  Said to have originated as a limb sport of Thompson that was found in 1929 by A.E. Henninger of McAllen, Texas, and patented by him in 1934. This is the first citrus variety to receive a patent.

 

Rootstocks of accession: Carrizo citrange, C-35 citrange

 

Season of ripeness at Riverside: February to June

 

Notes and observations:

1986, EMN: Grown from seed from Texas. Each tree propagated from seedlings which bore respective number of that sdlg. Typical trees were selected and propagated. This was CRC 2850-D. All other seedling lines are long gone so "D" is obsolete.

3/18/1988, EMN: Only light to faint pink tinge in flesh color this year.

5/29/2009, DK & TS: Very pale flesh, low seeds, good flavor.

 

Description from The Citrus Industry Vol. 1 (1967):

"Fruit similar to Thompson in all respects except for much deeper pigmentation in the flesh (but not in the juice), crimson blush on the rind, especially at points of contact between fruit; albedo pigmented.  Holds on tree as well as Marsh or Thompson but with some fading of flesh color.  Similar to Thompson in season of maturity.
      Tree indistinguishable from Thompson or Marsh.
      While the name Ruby has a slight time priority, Redblush seems preferable to avoid confusion with the much older Ruby orange variety.  Moreover, Redblush is more descriptive of this variety and is the name most used in the region of its origin.
      Ruby (Henninger Ruby Red) originated as a limb sport of Thompson that was found in 1929 by A. E. Henninger of McAllen, Texas, and patented by him in 1934.  So far as is known this was the first citrus variety to receive a patent (U.S. Plant Patent No. 53).
      Redblush (Webb Redblush) is said to have originated as a limb sport, also of Thompson, that was observed in 1931 by J. B. Webb of Donna, Texas, propagated soon thereafter, and introduced in 1934.
      Ruby and Redblush are so similar as to be indistinguishable and for all practical purposes they may be considered to be identical.  A number of similar bud mutations are known to have occurred subsequent to the two now generally propagated as Redblush or Ruby.  Thus, Waibel (1953) lists seven bud mutations which tests by the Texas Agricultural Experiment Station have shown do not differ significantly in appearance, season, or yield.  Ziegler and Wolfe (1961) state that several mutations have occurred in Florida that cannot be distinguished from Ruby.
      Nucellar clonal budlines are currently of great interest and are being planted commercially, in Texas, Arizona, and the Coachella Valley of California.  The oldest and most popular of these is CES Redblush No. 3, which was produced at the University of California Citrus Research Center, Riverside.
      Because of the attractive appearance provided by the pigmentation of the rind and its deeper flesh coloration, Redblush (Ruby) rapidly superseded Thompson and some years ago became by far the leading pigmented variety and one of the major grapefruit varieties. "

 

Availability: Commercially available in California through the Citrus Clonal Protection Program.

USDA Germplasm Resources Information Network page for Redblush grapefruit

CVC Fruit Quality Data for Redblush grapefruit:

(Old format)

CULTIVAR SAMPLE LOCATION DATE  NUMBER OF FRUIT PER SAMPLE TOTAL LENGTH PER SAMPLE (cm) TOTAL WIDTH PER SAMPLE (cm) LENGTH /WIDTH RATIO TOTAL WT PER SAMPLE (grams) MEAN WEIGHT PER FRUIT (grams) EXTERNAL COLOR BASED ON COLOR CHART TEXTURE BASED ON CHART TOTAL RIND THICKNESS PER SAMPLE (mm) TOTAL SEEDS PER SAMPLE INTERIOR COLOR DESCRIPTION TOTAL JUICE WT. PER SAMPLE (grams) % JUICE TSS (TOTAL SOLUBLE SOLIDS) % ACID (BASED ON CITRIC ACID) RATIO (TSS / % ACID) 
Red Blush Lindcove 1/8/1997 10 93.8 107.0 0.9 4581.1 458.1 10.0 2.5 88.0 10.0 LIGHT RED 2088.1 45.6 10.0 1.5 6.6
Red Blush Lindcove 1/8/1997 10 91.1 108.5 0.8 4449.3 444.9 10.0 2.5 109.0 11.0 LIGHT RED 1879.3 42.2 10.9 1.6 6.6
Red Blush Riverside 1/8/1997 10 74.3 78.5 0.9 2112.3 211.2 10.0 2.0 70.0 28.0 LIGHT RED PINK 1037.8 49.1 10.4 1.7 6.1
Red Blush Coachella 1/9/1997 10 86.5 91.5 0.9 3687.2 368.7 9.5 2.5 78.5 28.0 LIGHT RED 1695.5 46.0 8.9 1.3 7.2
Red Blush Irvine 1/14/1997 10 80.5 93.1 0.9 3249.5 325.0 9.0 2.5 78.0 22.0 MEDIUM PINK 1633.0 50.3 11.9 1.8 6.7
Red Blush Irvine 1/14/1997 10 82.8 92.7 0.9 3261.1 326.1 9.5 2.5 83.0 20.0 MEDIUM PINK 1529.9 46.9 12.4 2.1 5.9
Red Blush Riverside 1/27/1997 10 75.2 79.5 0.9 2182.1 218.2 10.0 2.0 63.0 30.0 LIGHT PINK 1078.2 49.4 10.9 1.6 6.7
Red Blush Riverside 1/27/1997 10 71.0 74.8 0.9 1955.8 195.6 10.0 2.0 57.0 30.0 LIGHT PINK 1010.8 51.7 10.4 1.8 5.8
Red Blush Lindcove 1/28/1997 10 94.7 111.6 0.8 4875.3 487.5 10.0 2.5 100.0 5.0 LIGHT PINK 1989.7 40.8 9.3 1.4 6.5
Red Blush Lindcove 1/28/1997 10 90.2 103.1 0.9 3946.8 394.7 10.0 3.0 95.0 5.0 LIGHT PINK 1536.5 38.9 11.1 1.6 7.0
Red Blush Irvine 2/3/1997 10 78.7 89.5 0.9 3029.6 303.0 10.0 2.5 81.0 31.0 PALE PINK 1534.5 50.7 11.1 1.7 6.4
Red Blush Irvine 2/3/1997 10 80.3 92.0 0.9 3138.2 313.8 10.0 2.5 82.0 25.0 PALE PINK 1541.4 49.1 11.4 1.9 6.0
Red Blush Irvine 2/18/1997 10 77.4 89.2 0.9 2943.6 294.4 10.0 2.0 72.0 29.0 VERY LIGHT PINK 1496.0 50.8 11.4 1.7 6.7
Red Blush Irvine 2/18/1997 10 83.0 94.8 0.9 3361.7 336.2 10.0 2.5 74.0 27.0 VERY LIGHT PINK 1718.3 51.1 11.2 1.8 6.1
Red Blush Coachella 2/27/1997 10 96.0 100.5 1.0 4431.2 443.1 9.0 2.0 76.0 18.0 MEDIUM RED 2106.3 47.5 8.7 1.2 7.4
Red Blush Lindcove 1/6/1998 10 87.1 98.6 0.9 3558.9 355.9 8.5 2.5 90.0 30.0 LIGHT PINK 1561.5 43.9 9.8 1.5 6.8
Red Blush Lindcove 1/6/1998 10 93.7 108.1 0.9 4430.5 443.1 8.5 2.5 101.0 15.0 LIGHT PINK 1956.5 44.2 9.7 1.4 6.9
Red Blush Irvine 1/6/1998 10 80.2 90.5 0.9 3158.6 315.9 10.0 1.5 63.0 27.0 YEL.W/ LIGHT PINK 1597.9 50.6 12.4 1.8 6.9
Red Blush Irvine 1/6/1998 10 81.4 91.7 0.9 3180.1 318.0 8.0 1.5 72.0 17.0 YEL.W/ LIGHT PINK 1385.1 43.6 14.0 2.3 6.2
Red Blush Riverside 1/8/1998 10 91.0 95.6 1.0 3968.2 396.8 9.0 1.5 25.0 15.0 LIGHT PINK 1887.3 47.6 8.9 1.3 7.1
Red Blush Riverside 1/8/1998 10 95.2 97.5 1.0 4501.6 450.2 9.0 2.0 66.0 18.0 LIGHT PINK 2087.3 46.4 8.7 1.2 6.9
Red Blush Coachella 1/14/1998 10 96.7 99.1 1.0 4080.0 408.0 9.5 2.5 85.0 16.0 LIGHT PINK 1874.3 45.9 8.8 1.3 6.8
Red Blush Riverside 1/30/1998 10 94.1 98.9 1.0 4262.4 426.2 9.5 1.5 76.0 19.0 LIGHT PINK 2026.1 47.5 8.8 1.3 6.6
Red Blush Riverside 1/30/1998 10 100.4 102.0 1.0 4775.6 477.6 9.5 2.0 69.0 19.0 LIGHT PINK 2445.9 51.2 9.9 1.6 6.3
Red Blush Irvine 1/30/1998 10 84.0 95.2 0.9 3551.0 355.1 9.5 1.5 70.0 21.0 LIGHT PINK 1928.1 54.3 10.8 1.5 7.0
Red Blush Irvine 1/30/1998 10 81.2 91.7 0.9 3107.8 310.8 9.0 1.5 79.0 6.0 MEDIUM ORANGE 1438.5 46.3 12.9 2.3 5.7
Red Blush Lindcove 2/5/1998 10 90.5 98.8 0.9 3854.3 385.4 9.5 2.0 99.0 21.0 MEDIUM PINK 1756.6 45.6 9.2 1.3 7.1
Red Blush Lindcove 2/5/1998 10 98.5 108.6 0.9 4735.2 473.5 9.5 2.0 114.0 11.0 MEDIUM PINK 2095.8 44.3 9.3 1.4 6.6
Red Blush Coachella 2/6/1998 10 93.2 99.3 0.9 4053.2 405.3 9.0 3.0 89.0 19.0 MEDIUM PINK 1923.6 47.5 9.0 1.3 6.9
Red Blush Riverside 3/2/1998 10 102.6 103.6 1.0 4838.9 483.9 9.0 2.0 94.0 20.0 LIGHT PINK 2196.0 45.4 9.6 1.2 7.7
Red Blush Lindcove 3/3/1998 10 90.7 101.8 0.9 3981.5 398.2 9.5 3.0 98.0 26.0 LIGHT-MEDIUM PINK 1644.0 41.3 9.1 1.2 7.5
Red Blush Coachella 3/4/1998 10 99.8 103.7 1.0 4601.6 460.2 9.0 3.0 87.0 28.0 LIGHT PINK 2134.2 46.4 8.8 1.2 7.3
Red Blush Irvine 3/5/1998 10 83.2 97.7 0.9 3796.7 379.7 8.5 1.5 60.0 24.0 MED. OR. W/ LT. PINK 2104.7 55.4 12.1 1.6 7.6
Red Blush Irvine 3/5/1998 10 85.4 96.1 0.9 3536.6 353.7 7.3 1.5 82.0 20.0 MED. YEL. W/ LT. PINK 1675.1 47.4 13.6 2.2 6.1
Red Blush Coachella 1/4/1999 10 87.8 98.2 0.9 3746.7 374.7 9.0 1.0 81.0 15.0 MEDIUM-DARK PINK 1877.3 50.1 8.6 1.5 5.6
Red Blush Lindcove 1/5/1999 10 84.0 100.7 0.8 3242.3 324.2 9.0 2.0 103.0 9.0 LIGHT-MEDIUM PINK 1120.7 34.6 8.5 1.8 4.6
Red Blush Lindcove 1/5/1999 10 87.2 103.5 0.8 3694.0 369.4 9.0 2.0 114.0 15.0 LIGHT-MEDIUM PINK 1347.6 36.5 8.5 1.8 4.9
Red Blush Riverside 1/8/1999 10 67.6 74.9 0.9 1810.9 181.1 8.0 2.0 60.0 29.0 VERY LIGHT PINK 803.6 44.4 10.9 1.9 5.8
Red Blush Riverside 1/8/1999 10 65.0 74.1 0.9 1747.3 174.7 8.0 2.0 56.0 37.0 LIGHT PINK 793.5 45.4 10.4 1.8 5.8
Red Blush Irvine 1/12/1999 10 74.1 86.0 0.9 2540.8 254.1 9.0 1.0 68.0 18.0 LIGHT YELLOW PINK 1204.6 47.4 9.3 2.2 4.2
Red Blush Irvine 1/12/1999 10 76.9 88.4 0.9 2788.4 278.8 9.5 1.0 62.0 7.0 MED. YELLOW-PINK 1403.0 50.3 10.3 2.3 4.5
Red Blush Lindcove 1/27/1999 10 86.5 101.5 0.9 3414.0 341.4 10.0 2.5 124.5 8.0 LIGHT PINK 1224.0 35.9 8.3 1.7 4.9
Red Blush Lindcove 1/27/1999 10 87.3 103.5 0.8 3491.3 349.1 10.0 2.5 129.5 14.0 LIGHT PINK 1198.0 34.3 8.4 1.7 5.1
Red Blush Coachella 1/28/1999 10 89.2 102.5 0.9 4155.6 415.6 9.6 1.5 78.0 21.0 MEDIUM DARK RED 2037.5 49.0 9.0 1.4 6.4
Red Blush Irvine 1/28/1999 10 78.3 90.8 0.9 2927.1 292.7 6.0 2.0 65.0 19.0 VERY LIGHT PINK 1346.4 46.0 9.0 1.8 5.0
Red Blush Irvine 1/28/1999 10 81.3 96.0 0.8 3254.6 325.5 6.5 2.0 69.0 21.0 LIGHT-MEDIUM PINK 1559.0 47.9 9.9 1.9 5.3
Red Blush Riverside 1/29/1999 10 71.2 80.5 0.9 2105.1 210.5 8.5 2.0 64.0 25.0 MEDIUM YELLOW 969.6 46.1 9.4 1.6 5.9
Red Blush Lindcove 2/11/1999 10 105.8 90.0 1.2 3740.2 374.0 9.5 2.0 114.0 0.0 PALE PINK 1257.4 33.6 8.8 1.1 8.3
Red Blush Lindcove 2/11/1999 10 110.0 93.4 1.2 4041.8 404.2 9.5 3.0 135.0 6.0 LIGHT PALE PINK 1208.4 29.9 8.7 1.6 5.5
Red Blush Riverside 2/17/1999 10 75.3 86.4 0.9 2558.2 255.8 7.0 3.0 65.0 36.0 YELLOW PINK 1210.5 47.3 10.7 1.7 6.5
Red Blush Riverside 2/17/1999 10 71.3 82.0 0.9 2221.5 222.2 8.0 2.5 57.0 39.0 YELLOW PINK 1045.0 47.0 11.0 1.7 6.3
Red Blush Irvine 2/19/1999 10 78.6 88.0 0.9 2776.0 277.6 7.0 2.2 66.0 15.0 VERY LIGHT PINK 1315.4 47.4 10.6 1.9 5.5
Red Blush Irvine 2/19/1999 10 84.3 95.5 0.9 3495.1 349.5 8.0 2.0 69.0 21.0 LIGHT PINK 1400.4 40.1 9.8 1.7 5.9
Red Blush Coachella 2/23/1999 10 91.5 105.0 0.9 4463.1 446.3 9.6 3.0 79.0 27.0 MED. PK. OR.PALE OR. 2159.6 48.4 9.3 1.3 7.1
Red Blush Lindcove 1/4/2000 10 79.8 87.4 0.9 2571.5 257.2 9.5 2.5 84.0 38.0 LIGHT PINK 1146.5 44.6 11.2 1.9 5.8
Red Blush Lindcove 1/4/2000 10 79.4 89.7 0.9 2667.8 266.8 8.5 2.0 94.0 20.0 LIGHT PINK 1120.6 42.0 11.3 2.0 5.7
Red Blush Irvine 1/6/2000 10 72.1 82.6 0.9 2372.1 237.2 7.0 2.0 64.0 13.0 VERY LIGHT PINK 1054.0 44.4 10.5 2.1 5.0
Red Blush Irvine 1/6/2000 10 75.6 86.8 0.9 2564.3 256.4 6.5 2.2 67.0 13.0 VERY LIGHT PINK 1242.2 48.4 9.7 2.1 4.7
Red Blush Coachella 1/7/2000 10 93.7 96.7 1.0 3941.1 394.1 9.5 2.5 64.0 35.0 PINK 1920.4 48.7 9.1 1.5 6.3
Red Blush Lindcove 1/24/2000 10 80.8 86.6 0.9 2610.0 261.0 9.2 2.5 85.0 34.0 VERY LIGHT PINK 1118.5 42.9 11.5 1.8 6.5
Red Blush Lindcove 1/24/2000 10 82.5 92.5 0.9 2900.0 290.0 9.2 2.5 93.0 31.0 LIGHT PINK 1231.4 42.5 11.4 1.8 6.2
Red Blush Irvine 1/26/2000 10 79.4 88.4 0.9 2823.7 282.4 6.0 2.0 71.0 26.0 MED. YEL.-V. LT. PINK 1254.5 44.4 9.8 2.0 4.9
Red Blush Irvine 1/26/2000 10 77.6 87.3 0.9 2734.2 273.4 6.5 2.0 71.0 18.0 VERY LIGHT PINK 1286.8 47.1 9.2 1.9 4.7
Red Blush Coachella 1/27/2000 10 93.4 95.7 1.0 3782.7 378.3 6.5 1.5 76.0 28.0 LIGHT-MEDIUM PINK 1802.3 47.6 9.0 1.6 7.7
Red Blush Lindcove 2/15/2000 10 80.5 86.9 0.9 2607.4 260.7 8.0 2.5 93.0 24.0 LIGHT PINK 1078.7 41.4 10.8 1.7 6.3
Red Blush Lindcove 2/15/2000 10 84.3 92.0 0.9 2957.0 295.7 8.0 2.5 90.0 22.0 LIGHT PINK 1068.6 36.1 8.5 1.4 6.2
Red Blush Irvine 2/22/2000 10 82.2 95.3 0.9 3401.2 340.1 2.5 7.5 73.0 19.0 VERY LIGHT PINK 1519.6 44.7 10.0 1.6 6.1
Red Blush Irvine 2/22/2000 10 84.0 93.5 0.9 3205.4 320.5 2.0 8.0 80.0 20.0 VERY LIGHT PINK 1543.7 48.2 9.6 1.8 5.4
Red Blush Coachella 2/23/2000 10 97.3 100.5 1.0 4276.2 427.6 8.0 2.7 81.0 17.0 LIGHT-MEDIUM PINK 2072.1 48.5 9.3 1.4 6.9

 

 

 


 

 


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