Co-op 20

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

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.

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.