Abstract
Phytochrome destruction begins immediately following actinic irradiation of 4-day-old, dark-grown oat (Avena sativa L., cv. Garry) shoots grown in open containers. When grown in closed containers, otherwise identical oat shoots exhibit a delay of about 40 minutes between irradiation and the onset of destruction. This delay can be attributed to accumulation of ethylene by several criteria, including elimination of the delay by mercuric perchlorate. These data provide an explanation for otherwise contradictory observations concerning the presence of a delay prior to the onset of destruction.
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Selected References
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