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Title: Dates and places of pollen collection by the Institute of Forest Genetics
Author: Duffield, John W.;
Source: Res. Note PSW-RN-054. Berkeley, CA: California Forest and Range Experiment Station, Forest Service, U.S. Department of Agriculture. 5 p
Publication Series: Research Note (RN)
Description: During the past few years, the Institute of Forest Genetics has received an increasing number of requests for pollen of various species of pine. Many of these requests have been fulfilled; others which stipulated arrival in time for specific crossing operations could not be fulfilled. The accompanying table is compiled to furnish cooperating pine breeders with the dates and places of pollen collection from various pine species and hybrids. This table will be revised and expanded to cover more species and additional genera as circumstances permit.
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Duffield, John W. 1947. Dates and places of pollen collection by the Institute of Forest Genetics. Res. Note PSW-RN-054. Berkeley, CA: California Forest and Range Experiment Station, Forest Service, U.S. Department of Agriculture. 5 p
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