Reproductive biology of the protandrous Ferdinandusa speciosa Pohl (Rubiaceae) in Southeastern Brazil
Autor(a) principal: | |
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Data de Publicação: | 2001 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Journal of Botany |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042001000200006 |
Resumo: | A study of the floral biology and the breeding system of Ferdinandusa speciosa Pohl (Rubiaceae) was carried out from March to September 1996 in Uberlândia, MG, central Brazil. This species is a shrub or small tree that occurs in swampy edges of gallery forests. The two studied populations flowered somewhat asynchronously from March to July. The tubular flowers are red, approximately 4.7 cm long and last for two days. They are protandrous and the pollen is available one day before the stigma becomes receptive. The beginning of anthesis and the opening of the stigmatic lips occur at dusk. The nectar is secreted during both the male and the female phases, with concentration of sugars greater in the male phase. The flowers are pollinated by two hummingbird species, Chlorostilbon aureoventris and Phaethornis pretrei. Ferdinandusa speciosa is a self-compatible, non-apomictic species, with low fruit production under natural conditions in the populations studied. No differences were found between fruit set of self- and cross-pollinated flowers, nor in the pollen tube growth rate in the pistils of these flowers. The seeds formed by cross-pollination are larger, heavier and show a higher percentage of germination than those formed by self-pollination, which indicates inbreeding depression. This result suggests that, although the species is self-compatible, cross-pollination may be advantageous. |
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Reproductive biology of the protandrous Ferdinandusa speciosa Pohl (Rubiaceae) in Southeastern BrazilFerdinandusahummingbirdpollinationprotandryRubiaceaeA study of the floral biology and the breeding system of Ferdinandusa speciosa Pohl (Rubiaceae) was carried out from March to September 1996 in Uberlândia, MG, central Brazil. This species is a shrub or small tree that occurs in swampy edges of gallery forests. The two studied populations flowered somewhat asynchronously from March to July. The tubular flowers are red, approximately 4.7 cm long and last for two days. They are protandrous and the pollen is available one day before the stigma becomes receptive. The beginning of anthesis and the opening of the stigmatic lips occur at dusk. The nectar is secreted during both the male and the female phases, with concentration of sugars greater in the male phase. The flowers are pollinated by two hummingbird species, Chlorostilbon aureoventris and Phaethornis pretrei. Ferdinandusa speciosa is a self-compatible, non-apomictic species, with low fruit production under natural conditions in the populations studied. No differences were found between fruit set of self- and cross-pollinated flowers, nor in the pollen tube growth rate in the pistils of these flowers. The seeds formed by cross-pollination are larger, heavier and show a higher percentage of germination than those formed by self-pollination, which indicates inbreeding depression. This result suggests that, although the species is self-compatible, cross-pollination may be advantageous.Sociedade Botânica de São Paulo2001-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042001000200006Brazilian Journal of Botany v.24 n.2 2001reponame:Brazilian Journal of Botanyinstname:Sociedade Botânica de São Paulo (SBSP)instacron:SBSP10.1590/S0100-84042001000200006info:eu-repo/semantics/openAccessCASTRO,CIBELE CARDOSO DEOLIVEIRA,PAULO EUGÊNIO ALVES MACEDO DEeng2001-08-02T00:00:00Zoai:scielo:S0100-84042001000200006Revistahttps://www.scielo.br/j/rbb/ONGhttps://old.scielo.br/oai/scielo-oai.phpbrazbot@gmail.com||brazbot@gmail.com1806-99590100-8404opendoar:2001-08-02T00:00Brazilian Journal of Botany - Sociedade Botânica de São Paulo (SBSP)false |
dc.title.none.fl_str_mv |
Reproductive biology of the protandrous Ferdinandusa speciosa Pohl (Rubiaceae) in Southeastern Brazil |
title |
Reproductive biology of the protandrous Ferdinandusa speciosa Pohl (Rubiaceae) in Southeastern Brazil |
spellingShingle |
Reproductive biology of the protandrous Ferdinandusa speciosa Pohl (Rubiaceae) in Southeastern Brazil CASTRO,CIBELE CARDOSO DE Ferdinandusa hummingbird pollination protandry Rubiaceae |
title_short |
Reproductive biology of the protandrous Ferdinandusa speciosa Pohl (Rubiaceae) in Southeastern Brazil |
title_full |
Reproductive biology of the protandrous Ferdinandusa speciosa Pohl (Rubiaceae) in Southeastern Brazil |
title_fullStr |
Reproductive biology of the protandrous Ferdinandusa speciosa Pohl (Rubiaceae) in Southeastern Brazil |
title_full_unstemmed |
Reproductive biology of the protandrous Ferdinandusa speciosa Pohl (Rubiaceae) in Southeastern Brazil |
title_sort |
Reproductive biology of the protandrous Ferdinandusa speciosa Pohl (Rubiaceae) in Southeastern Brazil |
author |
CASTRO,CIBELE CARDOSO DE |
author_facet |
CASTRO,CIBELE CARDOSO DE OLIVEIRA,PAULO EUGÊNIO ALVES MACEDO DE |
author_role |
author |
author2 |
OLIVEIRA,PAULO EUGÊNIO ALVES MACEDO DE |
author2_role |
author |
dc.contributor.author.fl_str_mv |
CASTRO,CIBELE CARDOSO DE OLIVEIRA,PAULO EUGÊNIO ALVES MACEDO DE |
dc.subject.por.fl_str_mv |
Ferdinandusa hummingbird pollination protandry Rubiaceae |
topic |
Ferdinandusa hummingbird pollination protandry Rubiaceae |
description |
A study of the floral biology and the breeding system of Ferdinandusa speciosa Pohl (Rubiaceae) was carried out from March to September 1996 in Uberlândia, MG, central Brazil. This species is a shrub or small tree that occurs in swampy edges of gallery forests. The two studied populations flowered somewhat asynchronously from March to July. The tubular flowers are red, approximately 4.7 cm long and last for two days. They are protandrous and the pollen is available one day before the stigma becomes receptive. The beginning of anthesis and the opening of the stigmatic lips occur at dusk. The nectar is secreted during both the male and the female phases, with concentration of sugars greater in the male phase. The flowers are pollinated by two hummingbird species, Chlorostilbon aureoventris and Phaethornis pretrei. Ferdinandusa speciosa is a self-compatible, non-apomictic species, with low fruit production under natural conditions in the populations studied. No differences were found between fruit set of self- and cross-pollinated flowers, nor in the pollen tube growth rate in the pistils of these flowers. The seeds formed by cross-pollination are larger, heavier and show a higher percentage of germination than those formed by self-pollination, which indicates inbreeding depression. This result suggests that, although the species is self-compatible, cross-pollination may be advantageous. |
publishDate |
2001 |
dc.date.none.fl_str_mv |
2001-06-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042001000200006 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042001000200006 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0100-84042001000200006 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Botânica de São Paulo |
publisher.none.fl_str_mv |
Sociedade Botânica de São Paulo |
dc.source.none.fl_str_mv |
Brazilian Journal of Botany v.24 n.2 2001 reponame:Brazilian Journal of Botany instname:Sociedade Botânica de São Paulo (SBSP) instacron:SBSP |
instname_str |
Sociedade Botânica de São Paulo (SBSP) |
instacron_str |
SBSP |
institution |
SBSP |
reponame_str |
Brazilian Journal of Botany |
collection |
Brazilian Journal of Botany |
repository.name.fl_str_mv |
Brazilian Journal of Botany - Sociedade Botânica de São Paulo (SBSP) |
repository.mail.fl_str_mv |
brazbot@gmail.com||brazbot@gmail.com |
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1754734837760000000 |