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Notes: Early Verification of a Hybrid Between Noble and California Red Firs

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Hybrids between Abies procera Rehd., and Abies magnifica A. Murr., made reciprocally at Marys Peak near Corvallis, Oreg., and near Placerville, Calif., suggest that no significant genetic barriers prevent crossing of the two species where ranges overlap. Hence, maintenance of species differences must be looked for in other factors. Cotyledon number, a very early expressed trait, was used to verify that recently germinated seedlings were true hybrids. A. magnifica cotyledons averaged nine, A. procera five, and the hybrids at both locations seven, with each seedling population statistically distinct.

Document Type: News

Affiliations: Research Foresters, Pacific Northwest Forest and Range Expt. Sta., Forest Service, U. S. Dept. Agric., Portland, Oreg.

Publication date: December 1, 1965

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