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A Gibberellin-Like Substance in Immature Pine Seed

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A gibberellin-like substance was isolated and identified from the immature seeds of Pinus jeffreyi Grev. & Balf., P. ponderosa Laws., and P. lambertiana Dougl. It appeared different chromatographically from two of the chemically known gibberellins isolated from angiosperm seeds and fruits. Seasonal changes determined in the gibberellin-like substance in the developing sugar pine seed showed that the concentration of the substance increased as the seed matured, with the highest concentration occurring during active embryo development.

Document Type: Journal Article

Affiliations: Plant Physiologist, Pacific Southwest Forest and Range Expt. Sta., Forest Serv, U.S. Dept. Agric., Berkeley, California

Publication date: March 1, 1967

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