Stigma structure and receptivity in papaya (Carica papaya L.)
Autor(a) principal: | |
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Data de Publicação: | 2021 |
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=S0001-37652021000101505 |
Resumo: | Abstract The objective of this study was to evaluate the stigma morphoanatomy and receptivity in ten promising papaya accessions, to expand knowledge useful for genetic improvement of the culture. The morphoanatomy was analyzed by light and scanning electron microscopy, and the stigma receptivity was investigated by application of hydrogen peroxide and α-naphthyl-acetate with fast blue B salt, in pre-anthesis, anthesis and post-anthesis. The papaya accessions presented dry stigma surface, presence of one to six erect stigmatic lobes, with structures joined to the upper base of the style and covered with numerous elongated unicellular tubular papillae, distributed on both faces of the epidermis. The morphoanatomy had a similar pattern in all the accessions, differing only in the timing of floral development. The stigma receptivity in some accessions occurred even before floral opening, continuing with greater intensity in anthesis and post-anthesis. Pre-anthesis is the stage least propitious for controlled hybridizations due to the weak or absent stigmatic receptivity. The results obtained provide information on the floral stage that is most propitious for fertilization, as well as supporting future investigations of the botanical morphology of the species. |
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Stigma structure and receptivity in papaya (Carica papaya L.)Caricaceaefloral anthesishistologyhydrogen peroxideα-naphthyl-acetatescanning electron microscopyAbstract The objective of this study was to evaluate the stigma morphoanatomy and receptivity in ten promising papaya accessions, to expand knowledge useful for genetic improvement of the culture. The morphoanatomy was analyzed by light and scanning electron microscopy, and the stigma receptivity was investigated by application of hydrogen peroxide and α-naphthyl-acetate with fast blue B salt, in pre-anthesis, anthesis and post-anthesis. The papaya accessions presented dry stigma surface, presence of one to six erect stigmatic lobes, with structures joined to the upper base of the style and covered with numerous elongated unicellular tubular papillae, distributed on both faces of the epidermis. The morphoanatomy had a similar pattern in all the accessions, differing only in the timing of floral development. The stigma receptivity in some accessions occurred even before floral opening, continuing with greater intensity in anthesis and post-anthesis. Pre-anthesis is the stage least propitious for controlled hybridizations due to the weak or absent stigmatic receptivity. The results obtained provide information on the floral stage that is most propitious for fertilization, as well as supporting future investigations of the botanical morphology of the species.Academia Brasileira de Ciências2021-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652021000101505Anais da Academia Brasileira de Ciências v.93 n.1 2021reponame:Anais da Academia Brasileira de Ciências (Online)instname:Academia Brasileira de Ciências (ABC)instacron:ABC10.1590/0001-3765202120190605info:eu-repo/semantics/openAccessFERREIRA,JACQUELINE A.B.LEDO,CARLOS A.S.SOUZA,FERNANDA V.D.CONCEIÇÃO,JOSIMARE Q.ROSSI,MONICA L.SOUZA,EVERTON H.eng2021-03-24T00:00:00Zoai:scielo:S0001-37652021000101505Revistahttp://www.scielo.br/aabchttps://old.scielo.br/oai/scielo-oai.php||aabc@abc.org.br1678-26900001-3765opendoar:2021-03-24T00:00Anais da Academia Brasileira de Ciências (Online) - Academia Brasileira de Ciências (ABC)false |
dc.title.none.fl_str_mv |
Stigma structure and receptivity in papaya (Carica papaya L.) |
title |
Stigma structure and receptivity in papaya (Carica papaya L.) |
spellingShingle |
Stigma structure and receptivity in papaya (Carica papaya L.) FERREIRA,JACQUELINE A.B. Caricaceae floral anthesis histology hydrogen peroxide α-naphthyl-acetate scanning electron microscopy |
title_short |
Stigma structure and receptivity in papaya (Carica papaya L.) |
title_full |
Stigma structure and receptivity in papaya (Carica papaya L.) |
title_fullStr |
Stigma structure and receptivity in papaya (Carica papaya L.) |
title_full_unstemmed |
Stigma structure and receptivity in papaya (Carica papaya L.) |
title_sort |
Stigma structure and receptivity in papaya (Carica papaya L.) |
author |
FERREIRA,JACQUELINE A.B. |
author_facet |
FERREIRA,JACQUELINE A.B. LEDO,CARLOS A.S. SOUZA,FERNANDA V.D. CONCEIÇÃO,JOSIMARE Q. ROSSI,MONICA L. SOUZA,EVERTON H. |
author_role |
author |
author2 |
LEDO,CARLOS A.S. SOUZA,FERNANDA V.D. CONCEIÇÃO,JOSIMARE Q. ROSSI,MONICA L. SOUZA,EVERTON H. |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
FERREIRA,JACQUELINE A.B. LEDO,CARLOS A.S. SOUZA,FERNANDA V.D. CONCEIÇÃO,JOSIMARE Q. ROSSI,MONICA L. SOUZA,EVERTON H. |
dc.subject.por.fl_str_mv |
Caricaceae floral anthesis histology hydrogen peroxide α-naphthyl-acetate scanning electron microscopy |
topic |
Caricaceae floral anthesis histology hydrogen peroxide α-naphthyl-acetate scanning electron microscopy |
description |
Abstract The objective of this study was to evaluate the stigma morphoanatomy and receptivity in ten promising papaya accessions, to expand knowledge useful for genetic improvement of the culture. The morphoanatomy was analyzed by light and scanning electron microscopy, and the stigma receptivity was investigated by application of hydrogen peroxide and α-naphthyl-acetate with fast blue B salt, in pre-anthesis, anthesis and post-anthesis. The papaya accessions presented dry stigma surface, presence of one to six erect stigmatic lobes, with structures joined to the upper base of the style and covered with numerous elongated unicellular tubular papillae, distributed on both faces of the epidermis. The morphoanatomy had a similar pattern in all the accessions, differing only in the timing of floral development. The stigma receptivity in some accessions occurred even before floral opening, continuing with greater intensity in anthesis and post-anthesis. Pre-anthesis is the stage least propitious for controlled hybridizations due to the weak or absent stigmatic receptivity. The results obtained provide information on the floral stage that is most propitious for fertilization, as well as supporting future investigations of the botanical morphology of the species. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-01-01 |
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=S0001-37652021000101505 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652021000101505 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/0001-3765202120190605 |
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.93 n.1 2021 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 |
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1754302869747531776 |