Enhanced Phytochrome Sensitivity and Its Reversal in Amaranthus albus Seeds | Zendy

R. Chadoeuf-Hannel | Zendy; Ray B. Taylorson | Zendy

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Enhanced Phytochrome Sensitivity and Its Reversal in Amaranthus albus Seeds

Author(s) -

R. Chadoeuf-Hannel,

Ray B. Taylorson

Publication year - 1985

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.78.2.228

Subject(s) - phytochrome , imbibition , botany , sensitivity (control systems) , biology , chemistry , germination , red light , electronic engineering , engineering

Seed of Amaranthus alus L. develop an enhanced sensitivity to the farred absorbing form of phytochrome after prolonged imbibition at temperatures >32 degrees C. The enhanced sensitivity developed at 40 degrees C could be reversed by subsequent treatment at 20 degrees C and similarly reestablished by repeating a 40 degrees 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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