Abstract
A discussion of sexual reproduction in seagrasses should begin with an examination of their origin and include a comparison with their closest freshwater relatives (i.e. the comparative method). There were no marine plants until angiosperms colonized marine coastal waters sometime in the Cretaceous, which is the earliest date of seagrass fossils (i.e. >100 × 106 years ago; den Hartog, 1970; Larkum and den Hartog, 1989). Prior to that time, bacteria and protists (i.e. algae) were the only marine photosynthetic organisms, as embryophytic plants had evolved earlier as a terrestrial group (Niklas, 1997; Dawes, 1998).
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Ackerman, J.D. (2007). Sexual Reproduction of Seagrasses: Pollination in the Marine Context. In: SEAGRASSES: BIOLOGY, ECOLOGYAND CONSERVATION. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-2983-7_4
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