Sugar pine and its hybrids

Abstract

Unlike most white pines, sugar pine (Pinus lambertiana) is severely restricted in its ability to hybridize with other species. It has not been successfully crossed with any other North American white pine, nor with those Eurasian white pines it most closely resembles. Crosses with the dissimilar P. koraiensis and P. armandii, both native to eastern Asia, have produced one and a few hybrids respectively. These Asian species are highly resistant to white pine blister rust (Cronartium ribicola), and hybrids and hybrid derivatives of sugar pine X P. armandii show some enhancement of resistance to this disease.

Citation

Critchfield, W. B.; Kinloch, B. B. 1986. Sugar pine and its hybrids. Silvae Genetica 35 (1986): p. 138-145