Corylus plant named ‘McDonald’

Abstract

A new and distinct Corylus plant named ‘McDonald’ characterized by moderate vigor and upright-spreading plant habit, yellowish-green developing and fully expanded leaves during the spring and summer, resistance to eastern filbert blight caused by the fungus Anisogramma anomala (Peck) E. Müller, presence of random amplified polymorphic DNA markers 152-800 and 268-580 in DNA, expression of incompatibility alleles S 2 and S 15 in the styles, and DNA fingerprints at 14 of 21 microsatellite marker loci differ from both parents, ‘Tonda Pacifica’ and ‘Santiam’, and from one parent at an additional 5 marker loci.

We claim: 
     
       1. A new and distinct cultivar of  Corylus  plant as herein illustrated and described.