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A Scots Pine Clonal Seed Orchard of Provenance Origin

Scots pine trees exhibiting desirable Christmas tree characteristics were selected in 1969 from a 36-origin, 7-yearold provenance plantation in Nebraska. Scions from selected ortets were grafted, over a four-year period, onto potted Scots pine stock in the greenhouse (82% success) and on field grown stock (69% success). A one-thousand tree, 10-acre, clonal seed orchard has been established. The seed orchard is arranged in randomized complete blocks containing one ramet each of 42 selected ortets. Spacing is 20 feet x 20 feet. Details of grafting techniques, site preparation, care and maintenance, and time of expected seed production are given.


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Author(s): David F. Van Haverbeke

Publication: Tree Improvement and Genetics - Central States Forest Tree Improvement Conference - 1974