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 20

(PRI 2318-104 = 'Crandall' x PRI 688-100) (Dayton et al. 1977)

Brief Description

  • Fruit: 64 to 10 mm (2-1/2 to 2-34 in.); oblate-round; pale yellow to deep canary yellow ground color, smooth, glossy finish; striped, washed, 50 to 80% medium to light red or orange, unique; fine grained, deep yellow colored, firm, very crisp and breaking flesh at harvest, retaining this texture up to one and one-half months in storage; mildly to moderately sub-acid, spicy, very full rich flavor, juicy. Retains quality for two months or more in refrigerated storage. Extremely sparse cropping with biennial tendency.
  • Season of Maturity: Six to seven weeks before 'Delicious'.
  • Tree: Moderately vigorous slightly upright, very thin branches with prolific branching producing a very brushy, undesirable tree; strong tendency for fruit to drop when ripe.
  • Disease Resistance: Field immune to apple scab; susceptible to powdery mildew; very susceptible to cedar-apple rust; moderately resistant to fire blight.
  • Problems: Sparse bearing, uneven ripening; tendency for fruit drop; poor growth habit; and susceptibility to secondary diseases.
  • General Recommendation: Problems too severe for further consideration. Discarded at Lafayette.
Co-op 20

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