Carya Ovata - Genetics

Genetics

Shagbark hickory hybridizes with pecan, Carya illinoensis, and shellbark hickory, C. Laciniosa (C. x dunbarii Sarg.). Shagbark hickory has 32 chromosomes. In general, species within the genus with the same chromosome number are able to cross. Numerous hybrids among the Carya species with 32 chromosomes (pecan, bitternut, shellbark, and shagbark) have been described though most are unproductive or have other flaws. A few hican varieties are commercially propagated.