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 35

Co-op Release Description

Origin Derived from a cross made in 1972 at the University of Illinois Pomology Research Farm, Urbana, Illinois. First selected in 1981 by E.B. Williams on the Hinsley tract of the Purdue University Horticultural Research Farm, West Lafayette, Indiana and tested as HER3T139.

Tree Moderately vigorous, standard, round-top tree. Semi-spur type bearing habit, moderate amounts of bare wood at the base of branches. Slightly leggy and somewhat limber wooded.

Bloom period Late mid-season.

Productivity Moderate bearing with some biennial tendencies.

Harvest period October 5 to 15 at Lafayette, Indiana.

Fruit size 2-5/8 to 3 inches.

Fruit shape Oblate conic to short conic.

Skin color Green-yellow at harvest, with a moderate orange blush on the sun-exposed surface of the fruit; maturing to yellow. Smooth, glossy finish with little russet and inconspicuous lenticels. Moderately thick, slightly tough skin.

Flesh Cream-colored, firm, very crisp and breaking, juicy, medium-grained flesh.

Flavor Mildly acid, pleasant and somewhat bland with some aroma.

Storage Retains quality and texture 4 to 5 months in refrigerated storage.

Disease reaction
Scab Field immune. Rust Susceptible.
Mildew Highly resistant.
Fire Blight Moderately resistant.

Comments A 'Golden Delicious' seedling maturing with or slightly later than this parent with a mild, pleasant flavor, crisp, breaking flesh type, and a good over-all level of disease resistance. Fruit size is smaller than 'Golden Delicious', but storage life is superior.

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.

Co-op 35

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Co-op Summary Table
Co-op Bloom Date

Brief Description
Co-op Release Description

Pedigree of Co-op 35

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