Title
Epidermal features and spikelet micromorphology in Oryza and related genera (Poaceae:Oryzeae)
Related Titles
Series:
Smithsonian contributions to botany, no. 91
By
Terrell, Edward E.
Peterson, Paul M.
Wergin, William P.
Type
Book
Material
Published material
Publication info
Washington, D.C, Smithsonian Institution Press, 2001
Notes
Using scanning electron microscopy, this study examines the spikelet morphology of sixteen species of Oryza, one species of Leersia, and one species each of the monotypic genera Porteresia and Rhynchoryza. A detailed discussion of the spikelet epidermal features and their relationship to the pedicel and cupule is presented. As the pedicel and cupule of species of Oryza are below the point of articulation of the spikelet, have similar epidermal features, and are free from the vascular cylinder that proceeds upward (distally) into the spikelet, we conclude that the pedicel cupules are not glumes but are merely expanded apices of the pedicels. An original data set of 14 morphological characters was used to perform parsimony and UPGMA analyses. Of these 14 characters, six describe the lemma, three describe the rachilla, two describe the glumes, two describe the articulation point and callus shape, and one describes the embryo. Our classification of Oryza recognizes three subgenera: Oryza subg. Oryza; O. subg. Brachyantha, new combination and status; and O. subg. Schlechteria, new combination and status. Within subgenus Oryza we recognize three sections: Oryza sect. Oryza (including O. ser. Oryza and O. ser. Latifoliae); O. sect. Ridleyanae; and O. sect. Padia.
Subjects
Grasses
,
Oryza
Call Number
QK1 .S2747 no. 91
Language
English
Identifiers
DOI:
https://doi.org/10.5962/bhl.title.103724
GPO:
0910-E
LCCN:
https://lccn.loc.gov/00069811
OCLC:
45620893
Wikidata:
https://www.wikidata.org/entity/Q51378566
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