Floral and reproductive biology of Alcantarea nahoumii (Bromeliaceae), a vulnerable endemic species of the Atlantic Forest
ABSTRACT Alcantarea nahoumii occurs exclusively in the state of Bahia, Brazil, and is classified as vulnerable due to deforestation and frequent fires in the region. Knowledge of floral and reproductive biology is fundamental to understanding ecological interactions, as well as the reproductive succ...
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| Format: | Article |
| Language: | English |
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Sociedade Botânica do Brasil
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| Series: | Acta Botânica Brasílica |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000400665&lng=en&tlng=en |
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| author | Maria Josirene Souza Moreira Bastos Lucimário Pereira Bastos Everton Hilo de Souza Taliane Leila Soares Daniel Vieira Morais Fernanda Vidigal Duarte de Souza Maria Angélica Pereira de Carvalho Costa |
| author_facet | Maria Josirene Souza Moreira Bastos Lucimário Pereira Bastos Everton Hilo de Souza Taliane Leila Soares Daniel Vieira Morais Fernanda Vidigal Duarte de Souza Maria Angélica Pereira de Carvalho Costa |
| author_sort | Maria Josirene Souza Moreira Bastos |
| collection | DOAJ |
| description | ABSTRACT Alcantarea nahoumii occurs exclusively in the state of Bahia, Brazil, and is classified as vulnerable due to deforestation and frequent fires in the region. Knowledge of floral and reproductive biology is fundamental to understanding ecological interactions, as well as the reproductive success of plant species. The objective of this study was to evaluate the floral and reproductive biology of A. nahoumii in an Atlantic Forest fragment with regard to phenology, pollen viability, stigma receptivity, pollination ecology and reproductive systems, all of which are important parameters for of the development of conservation strategies for the species. Anthesis is diurnal and heterogeneous, starting at 6:30 a.m. and lasting until 8:00 a.m. Highest germination percentages and greatest pollen tube lengths were obtained in BK culture medium. Histochemical tests revealed high pollen viability (89.71 %). Stigma receptivity occurred during anthesis and lasted for up to 24 hours after floral opening. Alcantarea nahoumii exhibited preferential allogamy and self-compatibility, and required a pollinator to production of viable seeds. Sixteen species of pollinators were observed visiting A. nahoumii, among which were five hummingbird species. Even though its reproductive system is efficient, this bromeliad remains threatened mainly due to habitat fragmentation caused by deforestation, burning and predatory extractivism. |
| first_indexed | 2024-12-22T17:41:47Z |
| format | Article |
| id | doaj.art-bb6978c2279d42b0b2a28e79247107ad |
| institution | Directory Open Access Journal |
| issn | 1677-941X |
| language | English |
| last_indexed | 2024-12-22T17:41:47Z |
| publisher | Sociedade Botânica do Brasil |
| record_format | Article |
| series | Acta Botânica Brasílica |
| spelling | doaj.art-bb6978c2279d42b0b2a28e79247107ad2022-12-21T18:18:24ZengSociedade Botânica do BrasilActa Botânica Brasílica1677-941X31466567610.1590/0102-33062017abb0102S0102-33062017000400665Floral and reproductive biology of Alcantarea nahoumii (Bromeliaceae), a vulnerable endemic species of the Atlantic ForestMaria Josirene Souza Moreira BastosLucimário Pereira BastosEverton Hilo de SouzaTaliane Leila SoaresDaniel Vieira MoraisFernanda Vidigal Duarte de SouzaMaria Angélica Pereira de Carvalho CostaABSTRACT Alcantarea nahoumii occurs exclusively in the state of Bahia, Brazil, and is classified as vulnerable due to deforestation and frequent fires in the region. Knowledge of floral and reproductive biology is fundamental to understanding ecological interactions, as well as the reproductive success of plant species. The objective of this study was to evaluate the floral and reproductive biology of A. nahoumii in an Atlantic Forest fragment with regard to phenology, pollen viability, stigma receptivity, pollination ecology and reproductive systems, all of which are important parameters for of the development of conservation strategies for the species. Anthesis is diurnal and heterogeneous, starting at 6:30 a.m. and lasting until 8:00 a.m. Highest germination percentages and greatest pollen tube lengths were obtained in BK culture medium. Histochemical tests revealed high pollen viability (89.71 %). Stigma receptivity occurred during anthesis and lasted for up to 24 hours after floral opening. Alcantarea nahoumii exhibited preferential allogamy and self-compatibility, and required a pollinator to production of viable seeds. Sixteen species of pollinators were observed visiting A. nahoumii, among which were five hummingbird species. Even though its reproductive system is efficient, this bromeliad remains threatened mainly due to habitat fragmentation caused by deforestation, burning and predatory extractivism.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000400665&lng=en&tlng=enBromeliaceaefloral visitorsnectarpollen viabilityreproductive systemsstigma receptivity |
| spellingShingle | Maria Josirene Souza Moreira Bastos Lucimário Pereira Bastos Everton Hilo de Souza Taliane Leila Soares Daniel Vieira Morais Fernanda Vidigal Duarte de Souza Maria Angélica Pereira de Carvalho Costa Floral and reproductive biology of Alcantarea nahoumii (Bromeliaceae), a vulnerable endemic species of the Atlantic Forest Acta Botânica Brasílica Bromeliaceae floral visitors nectar pollen viability reproductive systems stigma receptivity |
| title | Floral and reproductive biology of Alcantarea nahoumii (Bromeliaceae), a vulnerable endemic species of the Atlantic Forest |
| title_full | Floral and reproductive biology of Alcantarea nahoumii (Bromeliaceae), a vulnerable endemic species of the Atlantic Forest |
| title_fullStr | Floral and reproductive biology of Alcantarea nahoumii (Bromeliaceae), a vulnerable endemic species of the Atlantic Forest |
| title_full_unstemmed | Floral and reproductive biology of Alcantarea nahoumii (Bromeliaceae), a vulnerable endemic species of the Atlantic Forest |
| title_short | Floral and reproductive biology of Alcantarea nahoumii (Bromeliaceae), a vulnerable endemic species of the Atlantic Forest |
| title_sort | floral and reproductive biology of alcantarea nahoumii bromeliaceae a vulnerable endemic species of the atlantic forest |
| topic | Bromeliaceae floral visitors nectar pollen viability reproductive systems stigma receptivity |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000400665&lng=en&tlng=en |
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