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| ACCESSION | PLANT NAME | TAXONOMY | ORIGIN | GENEBANK | IMAGE | AVAILABILITY | RECEIVED | SOURCE TYPE | SOURCE DATE | COLLECTION SITE | COORDINATES | ELEVATION | HABITAT | IMPROVEMENT LEVEL | NARRATIVE | | |
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| 0 | PI 617210 | 'Lewis' | Corylus avellana L. | Oregon, United States | COR |  | Not Available | 1997 | DEVELOPED | 01/23/1997 | | | | | Cultivar | 'Lewis' is precocious, and it is more productive and has a smaller tree size than 'Barcelona.' Harvest is earlier than 'Barcelona,' and the nuts have fewer defects. Tree growth habit: 'Lewis' is a 'grower-friendly' tree, with a good balance between vegetative and reproductive growth and can be managed much like a 'Barcelona.' Tree size is 75% of 'Barcelona' as measured by the trunk cross sectional area. Flowering characteristics: Female flowers bloom at the same time as 'Barcelona.' The incompatibility alleles are S3 S8. The recommended pollinizers are 'Tonda di Giffoni' and 'Hall's Giant.' Yield and yield efficiency: 'Lewis' has out-yielded 'Barcelona' in the first 4 bearing years and yields were similar in 1997. 'Lewis' is a more efficient nut producer than 'Barcelona' (i.e. yields are greater and tree size is smaller). More of the tree's resources are used to produce nuts and less to develop leaves and wood. Harvest time: Nut clusters contain 3-4 nuts. Nuts are freehusking and ready to harvest 5-7 days earlier than 'Barcelona.' Nut and kernel quality: 'Lewis' nuts are smaller than 'Barcelona.' Only 17% of the nuts had defects in 1997, compared to 28 percent for 'Barcelona.' Most defects in 'Lewis' are shriveled, poorl filled, or moldy nuts. In 1997, only I% of the nuts were blanks, 'Barcelona' had 8%. Kernel is 4-5% greater than 'Barcelona.' Raw kernels have very little fiber. Kernels blanch slightly better than 'Barcelona' and have good flavor and texture. Propagation: 'Lewis' is easy to propagate by the 'tie-off' method. Layers are well rooted and vigorous. Pest tolerance: A major strength is its tolerance to eastern filbert blight. Its tolerance to the pathogen is better than 'Willamette' and 'Hall' Giant.' Big bud mite tolerance is comparable to 'Casina.' | 1544654 | PI 617210 |