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  1. Yield and quality of seed from yellow birch progenies.

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    Author(s): Knud E. Clausen
    Date: 1980
    Source: Research Paper NC-183. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station
    Publication Series: Research Paper (RP)
    Station: North Central Research Station
    PDF: View PDF  (1.1 MB)

    Description

    Seed yield in 8- ad 9-year-old yellow birch varied among families and years but averaged more than 1,500 seeds per tree. Long catkins contained more seed than short ones. Seed quality was poor due to insufficient pollination and to differences among trees in flowering phenology.

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    Citation

    Clausen, Knud E. 1980. Yield and quality of seed from yellow birch progenies. Research Paper NC-183. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station

    Keywords

    provenances, climate catkin dimensions, correlations, pollination, phenology, germination

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