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
 

PristineTM

Co-op 32

Co-op Release Description

Origin Derived from a cross made in 1974 at the Cream Ridge Research and Development Center, Rutgers University. First selected in 1982 by E.B. Williams on the Hinsley tract of the Purdue University Horticultural Research Farm, West Lafayette, Indiana and tested as HFRow 34.

Tree Moderate vigor, round-top, spreading, good crotch angles, little blindwood, semi-spur type bearing habit with limber wood that has some tendency to droop under a heavy crop load.

Bloom period Mid to late mid-season.

Productivity Moderate cropping, some biennial tendency.

Harvest period July 20 to August 1 at Lafayette, Indiana.

Fruit size 2-3/8 to 2-7/8 inches.

Fruit shape Oblate-round to round.

Skin Pale green-yellow to cream colored at harvest, maturing to deep yellow, with moderate orange blush on sun exposed surface. Smooth, glossy, non-russeted finish with inconspicuous lenticels; very attractive. Thin skin develops greasy cuticle after 6 to 8 weeks in refrigerated storage.

Flesh Pale yellow colored, crisp and slightly breaking yet melting flesh, medium to fine grained.

Flavor Mildly acid to sweet, slightly spicy, moderately rich, full flavor.

Storage Retains quality and texture 4 to 6 weeks in refrigerated storage.

Disease reaction
Scab
Field immune.
Rust Slightly resistant. Mildew Resistant.
Fire Blight Moderately resistant.

Comments Pleasant, mild, yellow summer apple with a beautiful finish. Co-op 32 has very good quality for its season with shelf-life adequate for retail sales. Quality and shelf-life significantly better than 'Lodi' or 'Yellow transparent'.

Source:
J.A. Crosby, Jules Janick, P.C. Pecknold, S.S. Korban, S.M. Ries, J. Goffreda, and A. Voordeckers. 1993. Co-op 32 to 38: Seven disease-resistant apple selections released for advanced testing. Purdue A.E.S. Sta. Bul. 658.

Pristine

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Brief Description
Co-op Release Description
Cultivar Release Description


Pedigree of Co-op 32

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