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
 

Co-op 15

(PRI 1569-100 = NJ. 27 x PRI 612-1) (Williams et al. 1975)

Brief Description

  • Fruit: 64 to 70 mm (2-1/2 to 2-3/4 in.); short conic to long conic; pale yellow ground color, bright finish, slightly striped, blushed, 80 to 95% bright medium red, attractive; thin, somewhat tough skin, occasionally with large white or russeted conspicuous lenticels; moderate grained, pale yellow colored, firm, crisp and breaking flesh at harvest, becoming tender after storage; mildly to moderately sub-acid, spicy, full rich flavor; juicy. Moderate cropping with tendency for biennial bearing. Retains quality into December in refrigerated storage.
  • Season of Maturity: Two and one-half weeks before 'Delicious'.
  • Tree: Moderately rigorous, slightly upright, moderately spurred branches with some bare wood at their base; very desirable growth habit; tendency for f1ruit to drop when ripe.
  • Disease Resistance: Field immune to apple scab; highly resistant to powdery mildew; moderately susceptible to cedar-apple rust; moderately resistant to fire blight.
  • Problems: Moderate to small fruit size; limited storage-life for season; somewhat tender flesh after one month in storage; tendency for fruit drop.
  • General Recommendation: Suggested for advanced testing in the Pacific Northwestern U.S., west of the Cascade Mountains.
Co-op 15

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