Tall trees with genes from .

Context: and are endemic to western Mexico, where they cover an area of more than 1 million hectares. is also cultivated in field trials in South Africa and South America, because of its considerable economic importance as a source of timber and resin. Seed quality, afforestation success and desirable traits may all be influenced by the presence of hybrid trees in seed stands.

Discrimination of Martinez populations on the basis of climatic, edaphic, dendrometric, genetic and population traits.

Background: , which is endemic to Mexico, is currently listed as "Endangered" on the Red List. Chihuahua spruce is only found in the Sierra Madre Occidental (SMO), Mexico. About 42,600 individuals are distributed in forty populations.