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2. Floating aquatic macrophytes Azolla

172. Floating aquatic macrophytes AzollaFloating aquatic macrophytes are defined as plants that float on the water surface, usually with submerged roots. Floating species are generally not dependent on soil or water spp. are heterosporous free- Floating freshwater ferns that live symbiotically with Anabaena azollae, a nitrogen-fixing blue-green algae. These plants have been of particular interest to botanists and Asian agronomists because of their association with blue-green algae and their rapid growth in nitrogen deficient habitats (Islam and Haque, 1986). The genus Azolla includes six species distributed widely throughout temperate, sub-tropical and tropical regions of the world. It is not clear whether the symbiont is the same in the various Azolla spp.

17 2. Floating aquatic macrophytes – Azolla Floating aquatic macrophytes are defined as plants that float on the water surface, usually with submerged roots.

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  Surfaces, Aquatic, Floating, Floating aquatic macrophytes azolla, Macrophytes, Azolla

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