Stigma structure and receptivity in papaya (Carica papaya L.)

Detalhes bibliográficos
Autor(a) principal: FERREIRA,JACQUELINE A.B.
Data de Publicação: 2021
Outros Autores: LEDO,CARLOS A.S., SOUZA,FERNANDA V.D., CONCEIÇÃO,JOSIMARE Q., ROSSI,MONICA L., SOUZA,EVERTON H.
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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spelling 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
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dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652021000101505
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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
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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
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