PRI Disease Resistant Apple Breeding Program

Co-op 1
Co-op 3
Sir Prize
Co-op 6
Co-op 7
Co-op 8
Co-op 9
Co-op 10
Co-op 11
Co-op 12
Co-op 14
Co-op 15
Co-op 16
Co-op 17
Co-op 18
Co-op 19
Co-op 20
Williams' Pride
Co-op 24
Scarlett O'Hara
Co-op 26
Co-op 27
Co-op 28
Pixie Crunch
Co-op 34
Co-op 35
Co-op 36
Co-op 37
Co-op 40
Co-op 41
Co-op 42
Co-op 44


Co-op 2

(PRI 1225-100 = PRI 14-510 x N.J. 123249) Introduced as 'Prima' (Dayton et al. 1970) U.S. Plant Patent No. Reissue 28,435, 1975)

Brief Description

  • Fruit: 67 to 76 mm or more (2-1/2 to 3 in.); round to short conic and irregular, green yellow to yellow ground color; bright finish; slightly striped, 50 to 90% medium to dark red; medium grained, cream colored, crisp and breaking flesh at harvest, reduced firmness after 3 to 4 weeks in storage; slightly spicy, moderately to spritely acid, and rich in flavor, juicy; very good dessert quality. Moderate to large fruit size. Early 'Jonathan' type fruit. Retains quality for one month or more in refrigerated storage. Fruit hangs on tree until over-ripe.
  • Season of Maturity: Four to five weeks before 'Delicious'.
  • Tree: Semi-vigorous, spreading. Moderately large in size.
  • Disease Resistance: Highly resistant to scab in the field. Good resistance to powdery mildew. Moderate to good resistance to fire blight. Susceptible to cedar-apple rust.
  • Problems: Sensitive to cold and prone to winter injury; susceptibility, to cedar-apple rust is a problem in some areas; fruit colors poorly inside canopy; storage longevity often considered inadequate; prone to bitter-pit, uneven ripening, requiring two or more pickings.
  • General Recommendation: Suggested for commercial plantings for early entry into fresh market, in areas where 'Jonathan' is grown, and especially for reduced input production. Only suggested where winter injury is not a severe problem.

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Brief Description
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About PRI