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 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
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'.

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.


About PRI
Co-op Summary Table
Co-op Bloom Date

Brief Description
Co-op Release Description
Cultivar Release Description

Pedigree of Co-op 32

About PRI