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Using gas chromatography it was shown that acetylcholine (ACh) was present in both etiolated and green oat (Avena sativa L. cv. Diadem) seedlings. In etiolated seedlings the ACh level was low, but increased rapidly during exposure to sunlight and red light (RL). The stimulative influence of RL was reversed by far-red light (FRL). The RL- and FRL- changes in(More)
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