Ferricyanide Induces Flowering by Suppression of Nitrate Assimilation in Lemna paucicostata 6746 |
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Authors: | Tanaka, Osamu Asagami, Kazuhiro |
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Affiliation: | Department of Biology, Faculty of Science, Konan University Kobe 658, Japan |
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Abstract: | Lemna paucicostata 6746, a short-day plant, produced flowerbuds even under continuous light when cultured for 3 days inferricyanide containing ammonium-free medium followed by cultureon nitrogen-rich medium (either nitrate or ammonium). Dailytreatment with ferricyanide in the absence of ammonium for morethan 8 hours, which completely inhibited nitrate reductase activitywithin 6 hours after the addition to the medium, induced daylength-independentflowering even when the ammonium-rich medium was given duringthe remaining hours. The presence of ammonium for 1 hour atthe middle of the 14-h ferricyanide treatment almost completelysuppressed floral induction. (Received March 6, 1986; Accepted June 3, 1986) |
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