Enhanced Phytochrome Sensitivity and Its Reversal in Amaranthus albus Seeds |
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| Authors: | Chadoeuf-Hannel R Taylorson R B |
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| Affiliation: | Institut National de la Recherche Agronomique, Laboratoire de Malherbologie, BV 1540, 21034 Dijon Cedex, France. |
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| Abstract: | Seed of Amaranthus alus L. develop an enhanced sensitivity to the farred absorbing form of phytochrome after prolonged imbibition at temperatures >32°C. The enhanced sensitivity developed at 40°C could be reversed by subsequent treatment at 20°C and similarly reestablished by repeating a 40°C treatment. It is concluded that relative sensitivity to the far-red absorbing form of phytochrome may be readily manipulated in seeds of A. albus. |
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