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Extraction and Storage of Loblolly Pine Pollen

Five years of investigations at North Carolina State University on extraction and storage of loblolly pine pollen have revealed the following: (1) the most critical factor in pollen storage is keeping the catkins and pollen dry during the extraction process; (2) pollen dried to a moisture content of 8 to 10 percent will store satisfactorily for two to three years with most of the methods investigated; (3) the vacuum method of pollen storage is effective for up to three years and yields higher and more consistent viability than do the conventional methods tested. Justification of this expensive method is still in question at this time.

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Author(s): Jerry R. Sprague, Vernon W. Johnson

Publication: Tree Improvement and Genetics - Southern Forest Tree Improvement Conference - 1977

Section: Session 1: Tree Breeding