Botanical aspects of Heteropterys umbellata (Malpighiaceae): a cytological and palynological approach
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Anais da Academia Brasileira de Ciências (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652010000400009 |
Resumo: | The genus Heteropterys is one of the major genera in Malpighiaceae. However, few cytological and palynological studies were reported. The present work described for the first time the chromosome number, heterochromatin pattern, meiotic behavior, pollen viability and palynological aspects of Heteropterys ubellata, a very spread species. One large Brazilian population was evaluated using conventional techniques for meiotic studies and acetolyse to access the pollen morphology. The species showed 2n = 20 chromosomes, normal meiotic development and viable pollens. Great blocks of heterochromatin were observed around the centromers. DAPI staining was positive for centroeric heterochroatin, hile CMA3 ark as observed just at terinal regions of one pair of hoologues chromosomes. This result and the presence of one chromosome pair attached to the nucleoli during the pachytene and diakinesis suggested the presence of only one pair of NORs. Palynological analysis revealed that pollen grains are apolar, 6 porate and with colpoids associated to all pores. The pollen content was positive for the starch test, and the exine was rugulate with little psilate regions. |
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Botanical aspects of Heteropterys umbellata (Malpighiaceae): a cytological and palynological approachchromosome numberheterochromatin patternHeteropterys umbellataMalpighiaceaemeiosispollen viabilityThe genus Heteropterys is one of the major genera in Malpighiaceae. However, few cytological and palynological studies were reported. The present work described for the first time the chromosome number, heterochromatin pattern, meiotic behavior, pollen viability and palynological aspects of Heteropterys ubellata, a very spread species. One large Brazilian population was evaluated using conventional techniques for meiotic studies and acetolyse to access the pollen morphology. The species showed 2n = 20 chromosomes, normal meiotic development and viable pollens. Great blocks of heterochromatin were observed around the centromers. DAPI staining was positive for centroeric heterochroatin, hile CMA3 ark as observed just at terinal regions of one pair of hoologues chromosomes. This result and the presence of one chromosome pair attached to the nucleoli during the pachytene and diakinesis suggested the presence of only one pair of NORs. Palynological analysis revealed that pollen grains are apolar, 6 porate and with colpoids associated to all pores. The pollen content was positive for the starch test, and the exine was rugulate with little psilate regions.Academia Brasileira de Ciências2010-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652010000400009Anais da Academia Brasileira de Ciências v.82 n.4 2010reponame:Anais da Academia Brasileira de Ciências (Online)instname:Academia Brasileira de Ciências (ABC)instacron:ABC10.1590/S0001-37652010000400009info:eu-repo/semantics/openAccessSousa,Saulo M.Reis,Aryane C.Gomes,Shaiany S.L.Bernardo,Karina B.Salimena,Fátima R.G.Viccini,Lyderson F.eng2011-02-28T00:00:00Zoai:scielo:S0001-37652010000400009Revistahttp://www.scielo.br/aabchttps://old.scielo.br/oai/scielo-oai.php||aabc@abc.org.br1678-26900001-3765opendoar:2011-02-28T00:00Anais da Academia Brasileira de Ciências (Online) - Academia Brasileira de Ciências (ABC)false |
dc.title.none.fl_str_mv |
Botanical aspects of Heteropterys umbellata (Malpighiaceae): a cytological and palynological approach |
title |
Botanical aspects of Heteropterys umbellata (Malpighiaceae): a cytological and palynological approach |
spellingShingle |
Botanical aspects of Heteropterys umbellata (Malpighiaceae): a cytological and palynological approach Sousa,Saulo M. chromosome number heterochromatin pattern Heteropterys umbellata Malpighiaceae meiosis pollen viability |
title_short |
Botanical aspects of Heteropterys umbellata (Malpighiaceae): a cytological and palynological approach |
title_full |
Botanical aspects of Heteropterys umbellata (Malpighiaceae): a cytological and palynological approach |
title_fullStr |
Botanical aspects of Heteropterys umbellata (Malpighiaceae): a cytological and palynological approach |
title_full_unstemmed |
Botanical aspects of Heteropterys umbellata (Malpighiaceae): a cytological and palynological approach |
title_sort |
Botanical aspects of Heteropterys umbellata (Malpighiaceae): a cytological and palynological approach |
author |
Sousa,Saulo M. |
author_facet |
Sousa,Saulo M. Reis,Aryane C. Gomes,Shaiany S.L. Bernardo,Karina B. Salimena,Fátima R.G. Viccini,Lyderson F. |
author_role |
author |
author2 |
Reis,Aryane C. Gomes,Shaiany S.L. Bernardo,Karina B. Salimena,Fátima R.G. Viccini,Lyderson F. |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Sousa,Saulo M. Reis,Aryane C. Gomes,Shaiany S.L. Bernardo,Karina B. Salimena,Fátima R.G. Viccini,Lyderson F. |
dc.subject.por.fl_str_mv |
chromosome number heterochromatin pattern Heteropterys umbellata Malpighiaceae meiosis pollen viability |
topic |
chromosome number heterochromatin pattern Heteropterys umbellata Malpighiaceae meiosis pollen viability |
description |
The genus Heteropterys is one of the major genera in Malpighiaceae. However, few cytological and palynological studies were reported. The present work described for the first time the chromosome number, heterochromatin pattern, meiotic behavior, pollen viability and palynological aspects of Heteropterys ubellata, a very spread species. One large Brazilian population was evaluated using conventional techniques for meiotic studies and acetolyse to access the pollen morphology. The species showed 2n = 20 chromosomes, normal meiotic development and viable pollens. Great blocks of heterochromatin were observed around the centromers. DAPI staining was positive for centroeric heterochroatin, hile CMA3 ark as observed just at terinal regions of one pair of hoologues chromosomes. This result and the presence of one chromosome pair attached to the nucleoli during the pachytene and diakinesis suggested the presence of only one pair of NORs. Palynological analysis revealed that pollen grains are apolar, 6 porate and with colpoids associated to all pores. The pollen content was positive for the starch test, and the exine was rugulate with little psilate regions. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-12-01 |
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=S0001-37652010000400009 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652010000400009 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0001-37652010000400009 |
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 |
Academia Brasileira de Ciências |
publisher.none.fl_str_mv |
Academia Brasileira de Ciências |
dc.source.none.fl_str_mv |
Anais da Academia Brasileira de Ciências v.82 n.4 2010 reponame:Anais da Academia Brasileira de Ciências (Online) instname:Academia Brasileira de Ciências (ABC) instacron:ABC |
instname_str |
Academia Brasileira de Ciências (ABC) |
instacron_str |
ABC |
institution |
ABC |
reponame_str |
Anais da Academia Brasileira de Ciências (Online) |
collection |
Anais da Academia Brasileira de Ciências (Online) |
repository.name.fl_str_mv |
Anais da Academia Brasileira de Ciências (Online) - Academia Brasileira de Ciências (ABC) |
repository.mail.fl_str_mv |
||aabc@abc.org.br |
_version_ |
1754302857675276288 |