Anther, ovule and embryological characters in Velloziaceae in relation to the systematics of Pandanales

Detalhes bibliográficos
Autor(a) principal: Sajo, Maria das Graças [UNESP]
Data de Publicação: 2011
Outros Autores: Mello-Silva, Renato, Rudall, Paula J.
Tipo de documento: Capítulo de livro
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1017/CBO9781139002950.014
http://hdl.handle.net/11449/232315
Resumo: Velloziaceae are a monocot family of five genera and c. 250 species (Mello-Silva, 2009). The family is now assigned to the order Pandanales, a small but morphologically diverse monocot order of five families: Cyclanthaceae, Pandanaceae, Stemonaceae (including Pentastemona Steenis), Triuridaceae and Velloziaceae (APG III, 2009). Within Velloziaceae, three genera occur in South America, of which two are endemic to Brazil (Barbacenia Vand., Vellozia Vand.) and the third is Andean (Barbaceniopsis L.B.Sm.). A fourth genus, Xerophyta Juss., grows in tropical Africa and the fifth, Acanthochlamys P.C.Kao, is endemic to China. In this chapter, we present new data on the anther, ovule and embryology of Velloziaceae in the context of ongoing related studies on floral evolution (e.g. Sajo et al., 2010) and the systematics of Pandanales (Furness and Rudall, 2006; Rudall and Bateman, 2006). Earlier studies on ovule and seed development and androecial features were used to delimit the genera of Velloziaceae (Menezes, 1976, 1980). Embryological features of Pandanales are currently poorly known, though some studies suggest that they are potentially systematically useful. For example, Cheah and Stone (1975) reported an unusual megagametophyte in some Pandanus species, in which nucellar nuclei migrate into the developing embryo sac, and tapetum type is unusually variable within Pandanales (Furness and Rudall, 2006).
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spelling Anther, ovule and embryological characters in Velloziaceae in relation to the systematics of PandanalesVelloziaceae are a monocot family of five genera and c. 250 species (Mello-Silva, 2009). The family is now assigned to the order Pandanales, a small but morphologically diverse monocot order of five families: Cyclanthaceae, Pandanaceae, Stemonaceae (including Pentastemona Steenis), Triuridaceae and Velloziaceae (APG III, 2009). Within Velloziaceae, three genera occur in South America, of which two are endemic to Brazil (Barbacenia Vand., Vellozia Vand.) and the third is Andean (Barbaceniopsis L.B.Sm.). A fourth genus, Xerophyta Juss., grows in tropical Africa and the fifth, Acanthochlamys P.C.Kao, is endemic to China. In this chapter, we present new data on the anther, ovule and embryology of Velloziaceae in the context of ongoing related studies on floral evolution (e.g. Sajo et al., 2010) and the systematics of Pandanales (Furness and Rudall, 2006; Rudall and Bateman, 2006). Earlier studies on ovule and seed development and androecial features were used to delimit the genera of Velloziaceae (Menezes, 1976, 1980). Embryological features of Pandanales are currently poorly known, though some studies suggest that they are potentially systematically useful. For example, Cheah and Stone (1975) reported an unusual megagametophyte in some Pandanus species, in which nucellar nuclei migrate into the developing embryo sac, and tapetum type is unusually variable within Pandanales (Furness and Rudall, 2006).Departamento de Botânica Instituto de Biociências UNESPInstituto de Biociências Universidade de São PauloJodrell Laboratory Royal Botanic Gardens, KewDepartamento de Botânica Instituto de Biociências UNESPUniversidade Estadual Paulista (UNESP)Universidade de São Paulo (USP)Royal Botanic GardensSajo, Maria das Graças [UNESP]Mello-Silva, RenatoRudall, Paula J.2022-04-29T11:29:22Z2022-04-29T11:29:22Z2011-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/bookPart304-314http://dx.doi.org/10.1017/CBO9781139002950.014Early Events in Monocot Evolution, p. 304-314.http://hdl.handle.net/11449/23231510.1017/CBO9781139002950.0142-s2.0-84906826938Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengEarly Events in Monocot Evolutioninfo:eu-repo/semantics/openAccess2022-04-29T11:29:22Zoai:repositorio.unesp.br:11449/232315Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T15:15:13.889832Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Anther, ovule and embryological characters in Velloziaceae in relation to the systematics of Pandanales
title Anther, ovule and embryological characters in Velloziaceae in relation to the systematics of Pandanales
spellingShingle Anther, ovule and embryological characters in Velloziaceae in relation to the systematics of Pandanales
Sajo, Maria das Graças [UNESP]
title_short Anther, ovule and embryological characters in Velloziaceae in relation to the systematics of Pandanales
title_full Anther, ovule and embryological characters in Velloziaceae in relation to the systematics of Pandanales
title_fullStr Anther, ovule and embryological characters in Velloziaceae in relation to the systematics of Pandanales
title_full_unstemmed Anther, ovule and embryological characters in Velloziaceae in relation to the systematics of Pandanales
title_sort Anther, ovule and embryological characters in Velloziaceae in relation to the systematics of Pandanales
author Sajo, Maria das Graças [UNESP]
author_facet Sajo, Maria das Graças [UNESP]
Mello-Silva, Renato
Rudall, Paula J.
author_role author
author2 Mello-Silva, Renato
Rudall, Paula J.
author2_role author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (UNESP)
Universidade de São Paulo (USP)
Royal Botanic Gardens
dc.contributor.author.fl_str_mv Sajo, Maria das Graças [UNESP]
Mello-Silva, Renato
Rudall, Paula J.
description Velloziaceae are a monocot family of five genera and c. 250 species (Mello-Silva, 2009). The family is now assigned to the order Pandanales, a small but morphologically diverse monocot order of five families: Cyclanthaceae, Pandanaceae, Stemonaceae (including Pentastemona Steenis), Triuridaceae and Velloziaceae (APG III, 2009). Within Velloziaceae, three genera occur in South America, of which two are endemic to Brazil (Barbacenia Vand., Vellozia Vand.) and the third is Andean (Barbaceniopsis L.B.Sm.). A fourth genus, Xerophyta Juss., grows in tropical Africa and the fifth, Acanthochlamys P.C.Kao, is endemic to China. In this chapter, we present new data on the anther, ovule and embryology of Velloziaceae in the context of ongoing related studies on floral evolution (e.g. Sajo et al., 2010) and the systematics of Pandanales (Furness and Rudall, 2006; Rudall and Bateman, 2006). Earlier studies on ovule and seed development and androecial features were used to delimit the genera of Velloziaceae (Menezes, 1976, 1980). Embryological features of Pandanales are currently poorly known, though some studies suggest that they are potentially systematically useful. For example, Cheah and Stone (1975) reported an unusual megagametophyte in some Pandanus species, in which nucellar nuclei migrate into the developing embryo sac, and tapetum type is unusually variable within Pandanales (Furness and Rudall, 2006).
publishDate 2011
dc.date.none.fl_str_mv 2011-01-01
2022-04-29T11:29:22Z
2022-04-29T11:29:22Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/bookPart
format bookPart
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1017/CBO9781139002950.014
Early Events in Monocot Evolution, p. 304-314.
http://hdl.handle.net/11449/232315
10.1017/CBO9781139002950.014
2-s2.0-84906826938
url http://dx.doi.org/10.1017/CBO9781139002950.014
http://hdl.handle.net/11449/232315
identifier_str_mv Early Events in Monocot Evolution, p. 304-314.
10.1017/CBO9781139002950.014
2-s2.0-84906826938
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Early Events in Monocot Evolution
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 304-314
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
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