Anther and pollen development in some species of Poaceae (Poales)
Anther and pollen development were studied in Olyra humilis Nees, Sucrea monophylla Soderstr, (Bambusoideae), Axonopus aureus P. Beauv., Paspalum polyphyllum Nees ex Trin. (Panicoideae), Eragrostis solida Nees, and Chloris elata Desv. (Chloridoideae). The objective of this study was to characterise,...
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| Format: | Article |
| Language: | English |
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Instituto Internacional de Ecologia
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| Series: | Brazilian Journal of Biology |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842010000200017&lng=en&tlng=en |
| _version_ | 1818931450818330624 |
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| author | AT. Nakamura HM. Longhi-Wagner VL. Scatena |
| author_facet | AT. Nakamura HM. Longhi-Wagner VL. Scatena |
| author_sort | AT. Nakamura |
| collection | DOAJ |
| description | Anther and pollen development were studied in Olyra humilis Nees, Sucrea monophylla Soderstr, (Bambusoideae), Axonopus aureus P. Beauv., Paspalum polyphyllum Nees ex Trin. (Panicoideae), Eragrostis solida Nees, and Chloris elata Desv. (Chloridoideae). The objective of this study was to characterise, embryologically, these species of subfamilies which are considered basal, intermediate and derivate, respectively. The species are similar to each other and to other Poaceae. They present the following characters: tetrasporangiate anthers; monocotyledonous-type anther wall development, endothecium showing annular thickenings, secretory tapetum; successive microsporogenesis; isobilateral tetrads; spheroidal, tricellular, monoporate pollen grains with annulus and operculum. Nevertheless, the exine patterns of the species studied are distinct. Olyra humilis and Sucrea monophylla (Bambusoideae) show a granulose pattern, whereas in the other species, it is insular. In addition, Axonopus aureus and Paspalum polyphyllum (Panicoideae) have a compactly insular spinule pattern, while Chloris elata and Eragrostis solida (Chloridoideae) show a sparsely insular spinule pattern. The exine ornamentation may be considered an important feature at the infrafamiliar level. |
| first_indexed | 2024-12-20T04:16:47Z |
| format | Article |
| id | doaj.art-92c48b49c8ed426ca8f1ab7775d330f2 |
| institution | Directory Open Access Journal |
| issn | 1678-4375 |
| language | English |
| last_indexed | 2024-12-20T04:16:47Z |
| publisher | Instituto Internacional de Ecologia |
| record_format | Article |
| series | Brazilian Journal of Biology |
| spelling | doaj.art-92c48b49c8ed426ca8f1ab7775d330f22022-12-21T19:53:45ZengInstituto Internacional de EcologiaBrazilian Journal of Biology1678-437570235136010.1590/S1519-69842010005000005S1519-69842010000200017Anther and pollen development in some species of Poaceae (Poales)AT. Nakamura0HM. Longhi-Wagner1VL. Scatena2Universidade Federal de LavrasUniversidade Federal do Rio Grande do SulUniversidade Estadual PaulistaAnther and pollen development were studied in Olyra humilis Nees, Sucrea monophylla Soderstr, (Bambusoideae), Axonopus aureus P. Beauv., Paspalum polyphyllum Nees ex Trin. (Panicoideae), Eragrostis solida Nees, and Chloris elata Desv. (Chloridoideae). The objective of this study was to characterise, embryologically, these species of subfamilies which are considered basal, intermediate and derivate, respectively. The species are similar to each other and to other Poaceae. They present the following characters: tetrasporangiate anthers; monocotyledonous-type anther wall development, endothecium showing annular thickenings, secretory tapetum; successive microsporogenesis; isobilateral tetrads; spheroidal, tricellular, monoporate pollen grains with annulus and operculum. Nevertheless, the exine patterns of the species studied are distinct. Olyra humilis and Sucrea monophylla (Bambusoideae) show a granulose pattern, whereas in the other species, it is insular. In addition, Axonopus aureus and Paspalum polyphyllum (Panicoideae) have a compactly insular spinule pattern, while Chloris elata and Eragrostis solida (Chloridoideae) show a sparsely insular spinule pattern. The exine ornamentation may be considered an important feature at the infrafamiliar level.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842010000200017&lng=en&tlng=enBambusoideaeChloridoideaeGramineaemicrosporogênesePanicoideae |
| spellingShingle | AT. Nakamura HM. Longhi-Wagner VL. Scatena Anther and pollen development in some species of Poaceae (Poales) Brazilian Journal of Biology Bambusoideae Chloridoideae Gramineae microsporogênese Panicoideae |
| title | Anther and pollen development in some species of Poaceae (Poales) |
| title_full | Anther and pollen development in some species of Poaceae (Poales) |
| title_fullStr | Anther and pollen development in some species of Poaceae (Poales) |
| title_full_unstemmed | Anther and pollen development in some species of Poaceae (Poales) |
| title_short | Anther and pollen development in some species of Poaceae (Poales) |
| title_sort | anther and pollen development in some species of poaceae poales |
| topic | Bambusoideae Chloridoideae Gramineae microsporogênese Panicoideae |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842010000200017&lng=en&tlng=en |
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