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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 | | |
|---|
| 0 | PI 557234 | 'Willamette' | Corylus avellana L. | Oregon, United States | COR |  | Not Available | 1991 | DEVELOPED | 1990 | | | | | Cultivar | This cultivar originated in Corvallis, Oregon by Shawn A. Mehlenbacher and Maxine M. Thompson of Oregon State University in 1978 from the cross Montabello x Compton (Barcelona x Daviana hybrid). The cultivar was selected in 1979 and tested as OSU 43-58. It was introduced in 1990. The nuts of Willamette are medium and dark brown. They are attractive but not acceptable for in-shell sales because the presence of fiber of the pellicle imparts a bitter taste to the nuts. The nuts yield 50% more marketable kernels than Barcelona (which is the leading cultivar in Oregon), however, Willamette kernels are smaller and are thinner-shelled. They also mature one week later than the Barcelona. The kernels blanch easily and are of excellent quality for use in pastries and confections. The husk is 50% longer than the nut but not entirely free-husking. The trees are vigorous, productive, susceptible to eastern filbert blight, and intermediately susceptible to big bud mites. | 1452206 | PI 557234 |