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Co-op 29
type: Culinary, Dessert, Pie
synonyms: Marketed as Sundance and sometimes called Sundancer.
summary: One of about 50 apple cultivars developed under the PRI (Purdue University, Rutgers University and the University of Illinois) programme using Malus floribunda 821 to develop apple varieties that are genetically resistant to scab.
identification: Large, round to round conic with no indication of ribbing. The skin base colour at ripeness is greenish yellow with an orange blush on the sun-exposed face. Small, almost inconspicuous green dots are found primarily on the upper half of the apple, some spots are russetted. The green stem is short and stout, set in a shallow basin which is usually russetted with the russetting growing onto and sometimes over the shoulder.
characteristics: Creamy white flesh is moderately coarse grained, crisp, breaking. Juicy, sweet with hints of pineapple and sweet lemon and a bit of spiciness.
uses: Good fresh eating apple. Also makes great pies. While the commercial trade supplying supermarkets is resistant to this apple because of its colouration, it does do fairly well at farm markets and farm-gate sales.
origins: Developed under the cooperative breeding program of the Purdue, Rutgers and Illinois State Universities (U.S.A.) by cross a Golden Delicious with pollen from an experimental cultivar (PRI 1050-201 ) derived from Winter Banana , McIntosh , Rome Beauty and crabapple (Malus floribunda). The initial cross was made in 1964 at Rutger University's Cream Ridge Research and Development Station and subsequently grown for testing at Purdue University's Horticultural Research Farm during the 1990s. Patented under the name Co-op 29 and trademarked as Sundance in 2003.
cultivation: Moderately vigorous, upright tree. Spur bearer and the fruit usually develops in clusters. It tends to be biennial.
cold storage: Stays fresh for a week at room temperature. In storage, the skin becomes slightly greasy to touch.
vulnerabilities: Immune to scab. Resistant to cedar apple rust, only moderately so to mildew and fire blight. In cooler seasons, extensive russetting can develop, along with russet cracks.
harvest: Ready for harvest during the last half of the fifth period. Fruit does not drop at maturity and will hang until overripe.
pollination group: D
pollination peak: 12
ploidism: Diploid. Self sterile.
cold storage weeks: 1
harvest period: 5
hardiness: 5
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