Species Hybridization in the Genus 'Pinus'

摘要

Results of a breeding program in which a large number of pine species were tested indicate that a number of species and hybrids may be useful in the northeastern United States. Austrian black pine x Japanese black pine and hybrids containing Japanese red pine all had good growth rates. While none of the soft pines grew faster than eastern white pine, a number of hybrids grew equally fast, and the nonnative component in the crosses may provide pest resistance, which is the number one problem in the Northeast.