PRI Disease Resistant Apple Breeding Program

 
Co-op 1
Prima
Co-op 3
Priscilla
Sir Prize
Co-op 6
Co-op 7
Co-op 8
Co-op 9
Co-op 10
Co-op 11
Co-op 12
Redfree
Co-op 14
Co-op 15
Co-op 16
Co-op 17
Co-op 18
Co-op 19
Co-op 20
Dayton
Jonafree
Williams' Pride
Co-op 24
Scarlett O'Hara
Co-op 26
Co-op 27
Co-op 28
Sundance
Enterprise
WineCrisp
Pristine
Pixie Crunch
Co-op 34
Co-op 35
Co-op 36
Co-op 37
GoldRush
CrimsonCrisp
Co-op 40
Co-op 41
Co-op 42
Juliet
Co-op 44
 
Priam
McShay
 

Jonafree

Co-op 22

Co-op Release Description

Matures September 20-25 at Urbana, Illinois (3 to 4 weeks after 'Prima' and with 'Jonathan'). Fruit up to 2 3/4 inches round to slightly sub-conic. Color 95 percent medium red wash on yellow ground. Skin smooth, no evidence of mildew russet. Flesh pale yellowish, medium-fine texture, firm, crisp, juicy. Sub-acid to mild flavor. Dessert quality very good. Holds texture and flavor well in storage. Tree field-immune to scab, but moderately susceptible to mildew; no fireblight or cedar rust observed on tree.

Resembles 'Jonathan' in shape; color slightly less intense than 'Jonared' but with higher percentage of surface covered with red. Flavor similar to 'Jonathan' but a little less acid. Flesh slightly more yellow than 'Jonathan'. Fruit hang well to tree. Ripe fruit do not develop "Jonathan spot" and have much reduced tendency to internal breakdown when fully ripe.

Source:
D.F. Dayton, E.B. Williams, Jules Janick, F.H. Emerson, L.F. Hough, and Catherine Bailey. 1977. Co-op 19, 20, 21, and 22: Four scab-resistant apple selections released for advanced testing. Illinois A.E.S. Sta. Bul. 755.

Jonafree

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Pedigree of Co-op 22

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