Extrafloral Nectaries of Dioscorea rotundata Poir.: Their Structure and Secretions |
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| Authors: | GROUT B W W; WILLIAMS A |
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| Institution: | Department of Biology, Norrh East London Polytechnic Romford Road, London E15 4LZ
Department of Plant Biology, University of Birmingham P.O. Box 363, Birmingham, B15 2TT |
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| Abstract: | Extrafloral nectaries are to be found embedded in the leaf laminaof Dioscorea rotundata Poir., with a pore opening on to thelower leaf surface. The nectaries comprise small, densely cytoplasmiccells and are bounded by a layer of cells containing littleor no cytoplasm. Their secretion contains sucrose, fructoseand glucose with traces of galactose. Ninhydrin-positive compoundsare also present. Diosorra rotunrdata Poir, extrafloral nectaries, secretion, ultrastructure |
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