Second positive- and negative phototropism in Vaucheria geminata |
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| Authors: | Kataoka Hironao |
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| Institution: | Department of Biology, Faculty of Science, Osaka University Toyonaka, Osaka 560, Japan |
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| Abstract: | Second positive and negative phototropism are found in Vaucheriageminata when the light intensity is very high. The dose-responsecurve of this alga resembles those obtained with Avena coleoptiles,suggesting that the phototropism of both plants occurs througha common initial process.
1 Present address: Institute for Agricultural Research, TohokuUniversity, Sendai 980, Japan. (Received October 13, 1976; ) |
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