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Effect of light on abscisic acid content in photosensitive Scots pine (Pinus sylvestris L.) seed

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Abstract

Dormancy-breaking treatment of the photosensitive Scots pine (Pinus sylvestris L.) seed by white light incubation or a 15-min exposure to red light decreased the abscisic acid content prior to radicle protrusion. Incubation in the dark or exposure to red light followed by a 5-min far-red light irradiation did not cause as great a decrease in abscisic acid content nor was the dormancy relieved. The ability of the far-red light to keep the ABA level high and to prevent germination gradually disappeared as the length of the dark period between the red and far-red treatments was increased to 24 h. ABA was quantified on a gas chromatograph with an electron capture detector.

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  1. Department of Plant Physiology, Swedish University of Agricultural Sciences, P.O.B. 7047, S-750 07, Uppsala, Sweden

    Elisabeth Tillberg

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  1. Elisabeth Tillberg
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Tillberg, E. Effect of light on abscisic acid content in photosensitive Scots pine (Pinus sylvestris L.) seed. Plant Growth Regul 11, 147–152 (1992). https://doi.org/10.1007/BF00024068

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  • DOI: https://doi.org/10.1007/BF00024068

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