Germination and morphological characterization of the fruits, seeds, and seedlings of Pilosocereus gounellei
Autor(a) principal: | |
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Data de Publicação: | 2012 |
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=S0100-84042012000100003 |
Resumo: | The present work examined the germination and morphology of the fruits and seeds of the cactus Pilosocereus gounellei (xique-xique) and describeb the different stages of seedling growth. Germination tests examined the effects of combinations of two illumination regimes (a 12 hour photoperiod and total darkness) and three temperature regimes (25, 30, and 20-30 ºC) on the seeds of this species. Germination counts were made daily until the 16th day after sowing and the germination percentage and velocity index, and average germination time were evaluated. Descriptions of seed morphology considered both their external and internal aspects. The processes of germination and seedling growth were evaluated during 150 days and eight developmental stages were identified based on morphological changes. The fruits of the xique-xique cactus are 40.67 ± 4.40 mm long and 48.09 ± 3.23 mm in diameter, weigh 53.85 ± 10.03 g, and contain 3713 ± 689.50 seeds. Alternating temperatures of 20-30 ºC together with a photoperiod of 12 hours of light resulted in the highest seed germination rate. The seeds are positively photoblastic and germination is epigeal and fanerocotyledonary. Seedling growth is slow, but at 150 days after sowing the plants had developed epicotyls, large numbers of thorns, and the whole plant averaged 59.56 mm in height. |
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Brazilian Journal of Botany |
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Germination and morphological characterization of the fruits, seeds, and seedlings of Pilosocereus gounelleiCactaceaemorphologyseedling growthThe present work examined the germination and morphology of the fruits and seeds of the cactus Pilosocereus gounellei (xique-xique) and describeb the different stages of seedling growth. Germination tests examined the effects of combinations of two illumination regimes (a 12 hour photoperiod and total darkness) and three temperature regimes (25, 30, and 20-30 ºC) on the seeds of this species. Germination counts were made daily until the 16th day after sowing and the germination percentage and velocity index, and average germination time were evaluated. Descriptions of seed morphology considered both their external and internal aspects. The processes of germination and seedling growth were evaluated during 150 days and eight developmental stages were identified based on morphological changes. The fruits of the xique-xique cactus are 40.67 ± 4.40 mm long and 48.09 ± 3.23 mm in diameter, weigh 53.85 ± 10.03 g, and contain 3713 ± 689.50 seeds. Alternating temperatures of 20-30 ºC together with a photoperiod of 12 hours of light resulted in the highest seed germination rate. The seeds are positively photoblastic and germination is epigeal and fanerocotyledonary. Seedling growth is slow, but at 150 days after sowing the plants had developed epicotyls, large numbers of thorns, and the whole plant averaged 59.56 mm in height.Sociedade Botânica de São Paulo2012-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042012000100003Brazilian Journal of Botany v.35 n.1 2012reponame:Brazilian Journal of Botanyinstname:Sociedade Botânica de São Paulo (SBSP)instacron:SBSP10.1590/S0100-84042012000100003info:eu-repo/semantics/openAccessAbud,Haynna FernandesGonçalves,Nayara RobertoPereira,Magnum de SousaPereira,Diego de SousaReis,Rodrigo de Góes EsperonBezerra,Antonio Marcos Esmeraldoeng2013-06-05T00:00:00Zoai:scielo:S0100-84042012000100003Revistahttps://www.scielo.br/j/rbb/ONGhttps://old.scielo.br/oai/scielo-oai.phpbrazbot@gmail.com||brazbot@gmail.com1806-99590100-8404opendoar:2013-06-05T00:00Brazilian Journal of Botany - Sociedade Botânica de São Paulo (SBSP)false |
dc.title.none.fl_str_mv |
Germination and morphological characterization of the fruits, seeds, and seedlings of Pilosocereus gounellei |
title |
Germination and morphological characterization of the fruits, seeds, and seedlings of Pilosocereus gounellei |
spellingShingle |
Germination and morphological characterization of the fruits, seeds, and seedlings of Pilosocereus gounellei Abud,Haynna Fernandes Cactaceae morphology seedling growth |
title_short |
Germination and morphological characterization of the fruits, seeds, and seedlings of Pilosocereus gounellei |
title_full |
Germination and morphological characterization of the fruits, seeds, and seedlings of Pilosocereus gounellei |
title_fullStr |
Germination and morphological characterization of the fruits, seeds, and seedlings of Pilosocereus gounellei |
title_full_unstemmed |
Germination and morphological characterization of the fruits, seeds, and seedlings of Pilosocereus gounellei |
title_sort |
Germination and morphological characterization of the fruits, seeds, and seedlings of Pilosocereus gounellei |
author |
Abud,Haynna Fernandes |
author_facet |
Abud,Haynna Fernandes Gonçalves,Nayara Roberto Pereira,Magnum de Sousa Pereira,Diego de Sousa Reis,Rodrigo de Góes Esperon Bezerra,Antonio Marcos Esmeraldo |
author_role |
author |
author2 |
Gonçalves,Nayara Roberto Pereira,Magnum de Sousa Pereira,Diego de Sousa Reis,Rodrigo de Góes Esperon Bezerra,Antonio Marcos Esmeraldo |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Abud,Haynna Fernandes Gonçalves,Nayara Roberto Pereira,Magnum de Sousa Pereira,Diego de Sousa Reis,Rodrigo de Góes Esperon Bezerra,Antonio Marcos Esmeraldo |
dc.subject.por.fl_str_mv |
Cactaceae morphology seedling growth |
topic |
Cactaceae morphology seedling growth |
description |
The present work examined the germination and morphology of the fruits and seeds of the cactus Pilosocereus gounellei (xique-xique) and describeb the different stages of seedling growth. Germination tests examined the effects of combinations of two illumination regimes (a 12 hour photoperiod and total darkness) and three temperature regimes (25, 30, and 20-30 ºC) on the seeds of this species. Germination counts were made daily until the 16th day after sowing and the germination percentage and velocity index, and average germination time were evaluated. Descriptions of seed morphology considered both their external and internal aspects. The processes of germination and seedling growth were evaluated during 150 days and eight developmental stages were identified based on morphological changes. The fruits of the xique-xique cactus are 40.67 ± 4.40 mm long and 48.09 ± 3.23 mm in diameter, weigh 53.85 ± 10.03 g, and contain 3713 ± 689.50 seeds. Alternating temperatures of 20-30 ºC together with a photoperiod of 12 hours of light resulted in the highest seed germination rate. The seeds are positively photoblastic and germination is epigeal and fanerocotyledonary. Seedling growth is slow, but at 150 days after sowing the plants had developed epicotyls, large numbers of thorns, and the whole plant averaged 59.56 mm in height. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-01-01 |
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=S0100-84042012000100003 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042012000100003 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0100-84042012000100003 |
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.35 n.1 2012 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 |
_version_ |
1754734840732712960 |