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Azolla-Anabaena Symbioses: Basic Biology, Use, and Prospects for the Future

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Part of the book series: Developments in Plant and Soil Sciences ((DPSS,volume 13))

Abstract

For the benefit of newcomers to the area of Azolla research some introductory material is presented. Azolla is a genus of free-floating, heterosporous aquatic pteridophytes. At present the genus usually is considered to contain six extant species in two sections. The subgenus Euazolla includes A. filiculoides Lamarck, A. caroliniana Willdenow, A. mexicana Presl and A. microphylla Kaulfuss, while the subgenus Rhizosperma includes A. pinnata R. Brown and A. nilotica DeCaisne. Species identification, which is in need of further assessment and possible revision, is based primarily upon features of the reproductive structures. The four new world species in the Euazolla are characterized by three megaspore floats while the two old world species in the Rhizosperma have nine megaspore floats.

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© 1984 Martinus Nijhoff/Dr W. Junk Publishers, Dordrecht

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Peters, G.A. (1984). Azolla-Anabaena Symbioses: Basic Biology, Use, and Prospects for the Future. In: Silver, W.S., Schröder, E.C. (eds) Practical Application of Azolla for Rice Production. Developments in Plant and Soil Sciences, vol 13. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-6201-9_1

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  • DOI: https://doi.org/10.1007/978-94-009-6201-9_1

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-94-009-6203-3

  • Online ISBN: 978-94-009-6201-9

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