Viability of pollen grains and stigma receptivity in desert rose
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFMG |
Texto Completo: | https://doi.org/10.1590/2447-536X.v28i1.2402 http://hdl.handle.net/1843/59539 |
Resumo: | Adenium obesum (Forssk.) Roem. & Schult., popularly known as desert rose, has become a valuable ornamental plant. In floriculture, the production of hybrids is prioritized. Hence, knowledge on floral biology and sexual reproduction of the target species is fundamental. The objectives of this study were: (1) to test sucrose concentrations and temperatures for in vitro germination of A. obesum pollen grains; (2) to identify the effect of temperature on the viability of A. obesum pollen grains; and (3) to evaluate the viability of pollen grains and stigma receptivity in pre-anthesis, at flower opening, and 72 h post-flower opening in three accessions of A. obesum. A significant relationship between temperatures and sucrose concentrations was observed in the in vitro germination test. The highest percentage of in vitro germination of pollen grains, 39.81%, was observed at an estimated temperature of 26.05 °C. Desert rose accessions maintained in biochemical oxygen demand (BOD) chambers at 30 °C during a 16-h light photoperiod showed faster flowering, and temperatures ≥ 25 °C induced pollen grain viability percentages above 69%. Temperature is one of the most important abiotic factors, influencing mainly in pollen germination, pollen tube growing and in efficiency fertilization. The ICA-wd accession stood out and can be considered a pollen donor in artificial pollination. The stigmas of flowers were receptive from a day before flower opening until three days after. The two parameters presented above, stigma receptivity and pollen viability, allow inferences about the appropriate time for successful pollination and subsequent fertilization in desert roses. |
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2023-10-17T16:44:03Z2023-10-17T16:44:03Z20222819298https://doi.org/10.1590/2447-536X.v28i1.24022447-536Xhttp://hdl.handle.net/1843/59539Adenium obesum (Forssk.) Roem. & Schult., popularly known as desert rose, has become a valuable ornamental plant. In floriculture, the production of hybrids is prioritized. Hence, knowledge on floral biology and sexual reproduction of the target species is fundamental. The objectives of this study were: (1) to test sucrose concentrations and temperatures for in vitro germination of A. obesum pollen grains; (2) to identify the effect of temperature on the viability of A. obesum pollen grains; and (3) to evaluate the viability of pollen grains and stigma receptivity in pre-anthesis, at flower opening, and 72 h post-flower opening in three accessions of A. obesum. A significant relationship between temperatures and sucrose concentrations was observed in the in vitro germination test. The highest percentage of in vitro germination of pollen grains, 39.81%, was observed at an estimated temperature of 26.05 °C. Desert rose accessions maintained in biochemical oxygen demand (BOD) chambers at 30 °C during a 16-h light photoperiod showed faster flowering, and temperatures ≥ 25 °C induced pollen grain viability percentages above 69%. Temperature is one of the most important abiotic factors, influencing mainly in pollen germination, pollen tube growing and in efficiency fertilization. The ICA-wd accession stood out and can be considered a pollen donor in artificial pollination. The stigmas of flowers were receptive from a day before flower opening until three days after. The two parameters presented above, stigma receptivity and pollen viability, allow inferences about the appropriate time for successful pollination and subsequent fertilization in desert roses.Adenium obesum (Forssk.) Roem. & Schult, conhecida popularmente como rosa-do-deserto, tem se tornado uma opção valiosa para o setor de plantas ornamentais. Na floricultura, a produção de híbridos é priorizada, para isso, o conhecimento da biologia floral e da reprodução sexuada da espécie é fundamental. Objetivou-se com o presente estudo: (1) testar concentrações de sacarose e temperaturas na germinação in vitro de grãos de pólen de Adenium obesum; (2) identificar o efeito da temperatura na viabilidade de grãos de pólen de Adenium obesum e; (3) avaliar a viabilidade dos grãos de pólen e receptividade estigmática pré-antese, abertura floral e 72 horas pós-abertura floral em três acessos de Adenium obesum. Interação significativa entre temperaturas e concentrações de sacarose foi observada no teste de germinação in vitro. A maior porcentagem de germinação in vitro dos grãos de pólen, 39,81% foi observada na temperatura estimada de 26,05 °C. Os acessos de rosa-do-deserto mantidos em B.O.D. sob temperatura de 30 °C e fotoperíodo de 16 horas de luz apresentaram florescimento mais rápido e as temperaturas ≥ 25 °C indicaram porcentagens de viabilidade dos grãos de pólen acima de 69%. A temperatura é um dos fatores abióticos mais importantes, influencia a germinação dos grãos de pólen, crescimento do tubo polínico e pode afetar a fertilização. O acesso ICA-bd destacou-se e pode ser considerado como doador de pólen em polinizações artificiais. O estigma das flores encontrou-se receptivo desde um dia antes da abertura das flores até três dias após a flor abrir. Os dois parâmetros apresentados acima, receptividade estigmática e viabilidade polínica, permitem fazer inferências importantes sobre os momentos mais apropriados para a polinização e subsequente fertilização na rosa-do-deserto.CNPq - Conselho Nacional de Desenvolvimento Científico e TecnológicoFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas GeraisCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível SuperiorengUniversidade Federal de Minas GeraisUFMGBrasilICA - INSTITUTO DE CIÊNCIAS AGRÁRIASOrnamental HorticulturePlantas ornamentaisFlores - CultivoSacaroseGerminaçãoViability of pollen grains and stigma receptivity in desert roseViabilidade de grão de pólen e receptividade do estigma em rosa-do-desertoinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttps://www.scielo.br/j/oh/a/JDC4Y6MS6m95rY6cYc85WYN/abstract/?lang=en#Cristiane Gonçalves SouzaSabrina Maihave Barbosa RamosSilvia NietscheClivia Carolina Fiorilo PossobomElka Fabiana Aparecida AlmeidaMarlon Cristian Toledo Pereirainfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFMGinstname:Universidade Federal de Minas Gerais (UFMG)instacron:UFMGLICENSELicense.txtLicense.txttext/plain; charset=utf-82042https://repositorio.ufmg.br/bitstream/1843/59539/1/License.txtfa505098d172de0bc8864fc1287ffe22MD51ORIGINALViability of pollen grains and stigma receptivity in Desert Rose.pdfViability of pollen grains and stigma receptivity in Desert Rose.pdfapplication/pdf2521668https://repositorio.ufmg.br/bitstream/1843/59539/2/Viability%20of%20pollen%20grains%20and%20stigma%20receptivity%20in%20Desert%20Rose.pdf60af2e70c86c53c04c8d53e30b7d8201MD521843/595392023-10-17 19:20:15.692oai:repositorio.ufmg.br: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Repositório de PublicaçõesPUBhttps://repositorio.ufmg.br/oaiopendoar:2023-10-17T22:20:15Repositório Institucional da UFMG - Universidade Federal de Minas Gerais (UFMG)false |
dc.title.pt_BR.fl_str_mv |
Viability of pollen grains and stigma receptivity in desert rose |
dc.title.alternative.pt_BR.fl_str_mv |
Viabilidade de grão de pólen e receptividade do estigma em rosa-do-deserto |
title |
Viability of pollen grains and stigma receptivity in desert rose |
spellingShingle |
Viability of pollen grains and stigma receptivity in desert rose Cristiane Gonçalves Souza Plantas ornamentais Flores - Cultivo Sacarose Germinação |
title_short |
Viability of pollen grains and stigma receptivity in desert rose |
title_full |
Viability of pollen grains and stigma receptivity in desert rose |
title_fullStr |
Viability of pollen grains and stigma receptivity in desert rose |
title_full_unstemmed |
Viability of pollen grains and stigma receptivity in desert rose |
title_sort |
Viability of pollen grains and stigma receptivity in desert rose |
author |
Cristiane Gonçalves Souza |
author_facet |
Cristiane Gonçalves Souza Sabrina Maihave Barbosa Ramos Silvia Nietsche Clivia Carolina Fiorilo Possobom Elka Fabiana Aparecida Almeida Marlon Cristian Toledo Pereira |
author_role |
author |
author2 |
Sabrina Maihave Barbosa Ramos Silvia Nietsche Clivia Carolina Fiorilo Possobom Elka Fabiana Aparecida Almeida Marlon Cristian Toledo Pereira |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Cristiane Gonçalves Souza Sabrina Maihave Barbosa Ramos Silvia Nietsche Clivia Carolina Fiorilo Possobom Elka Fabiana Aparecida Almeida Marlon Cristian Toledo Pereira |
dc.subject.other.pt_BR.fl_str_mv |
Plantas ornamentais Flores - Cultivo Sacarose Germinação |
topic |
Plantas ornamentais Flores - Cultivo Sacarose Germinação |
description |
Adenium obesum (Forssk.) Roem. & Schult., popularly known as desert rose, has become a valuable ornamental plant. In floriculture, the production of hybrids is prioritized. Hence, knowledge on floral biology and sexual reproduction of the target species is fundamental. The objectives of this study were: (1) to test sucrose concentrations and temperatures for in vitro germination of A. obesum pollen grains; (2) to identify the effect of temperature on the viability of A. obesum pollen grains; and (3) to evaluate the viability of pollen grains and stigma receptivity in pre-anthesis, at flower opening, and 72 h post-flower opening in three accessions of A. obesum. A significant relationship between temperatures and sucrose concentrations was observed in the in vitro germination test. The highest percentage of in vitro germination of pollen grains, 39.81%, was observed at an estimated temperature of 26.05 °C. Desert rose accessions maintained in biochemical oxygen demand (BOD) chambers at 30 °C during a 16-h light photoperiod showed faster flowering, and temperatures ≥ 25 °C induced pollen grain viability percentages above 69%. Temperature is one of the most important abiotic factors, influencing mainly in pollen germination, pollen tube growing and in efficiency fertilization. The ICA-wd accession stood out and can be considered a pollen donor in artificial pollination. The stigmas of flowers were receptive from a day before flower opening until three days after. The two parameters presented above, stigma receptivity and pollen viability, allow inferences about the appropriate time for successful pollination and subsequent fertilization in desert roses. |
publishDate |
2022 |
dc.date.issued.fl_str_mv |
2022 |
dc.date.accessioned.fl_str_mv |
2023-10-17T16:44:03Z |
dc.date.available.fl_str_mv |
2023-10-17T16:44:03Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/1843/59539 |
dc.identifier.doi.pt_BR.fl_str_mv |
https://doi.org/10.1590/2447-536X.v28i1.2402 |
dc.identifier.issn.pt_BR.fl_str_mv |
2447-536X |
url |
https://doi.org/10.1590/2447-536X.v28i1.2402 http://hdl.handle.net/1843/59539 |
identifier_str_mv |
2447-536X |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.none.fl_str_mv |
Ornamental Horticulture |
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info:eu-repo/semantics/openAccess |
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openAccess |
dc.publisher.none.fl_str_mv |
Universidade Federal de Minas Gerais |
dc.publisher.initials.fl_str_mv |
UFMG |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
ICA - INSTITUTO DE CIÊNCIAS AGRÁRIAS |
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Universidade Federal de Minas Gerais |
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UFMG |
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UFMG |
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