Reproductive biology of Pyrostegia venusta (Ker-Gawl.) Miers (Bignoniaceae) with special reference to seedlessness

Autores
Singh, Sweety; Chauhan, Seema; Galetto, Leonardo
Año de publicación
2009
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Pyrostegia venusta (Ker-Gawl.) Miers syn. Bignonia venusta (Bignoniaceae), commonly known as “orange trumpet creeper”, “flame vine” or “golden shower” bears large number of orange tubular flowers arranged in dichasial cyme. There are four didynamous stamens and the gynoecium is bicarpillary, syncarpous with bilocular ovary, long style and bilabiate stigma. Various floral-polymorphic features e.g. increased number of stamens and stigmatic lobes and heterostyly are recorded. Flowers open in the morning between 6.00–7.30 and remain open throughout the day and corolla abscises 12-14 h after anthesis. The flowers are protandrous as the stamens dehisce 1-2 h after their opening. A circular nectariferous tissue is present at the base of the ovary, secreting copious nectar throughout the life of flower. The stigma becomes receptive in the afternoon between 3.00 – 4.30 pm. However, the stigmatic lobes close down by various kinds of stimuli including self pollen, but reopens after some time. Only the honeybees, small bees and black ants visit the flowers, but are not effective pollinators as pollen grains on the stigmatic surface are either absent or only a few of them are present. Various hand pollination experiments conducted failed to produce fruits indicating that the plant is self-incompatible. The hand pollinated stigmatic surface shows only 2-3% pollen germination with small pollen tubes which fail to reach the ovules may be due to low temperature during the flowering period. Pollen-ovule ratio indicates that its facultative xenogamous nature.
Fil: Singh, Sweety. Dr. B.R. Ambedkar University. School of Life Sciences. Department of Botany; India
Fil: Chauhan, Seema. Dr. B.R. Ambedkar University. School of Life Sciences. Department of Botany; India
Fil: Galetto, Leonardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina
Materia
Biologia Reproductiva
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/21218
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/21218
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network_name_str CONICET Digital (CONICET)
spelling Reproductive biology of Pyrostegia venusta (Ker-Gawl.) Miers (Bignoniaceae) with special reference to seedlessnessSingh, SweetyChauhan, SeemaGaletto, LeonardoBiologia Reproductivahttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Pyrostegia venusta (Ker-Gawl.) Miers syn. Bignonia venusta (Bignoniaceae), commonly known as “orange trumpet creeper”, “flame vine” or “golden shower” bears large number of orange tubular flowers arranged in dichasial cyme. There are four didynamous stamens and the gynoecium is bicarpillary, syncarpous with bilocular ovary, long style and bilabiate stigma. Various floral-polymorphic features e.g. increased number of stamens and stigmatic lobes and heterostyly are recorded. Flowers open in the morning between 6.00–7.30 and remain open throughout the day and corolla abscises 12-14 h after anthesis. The flowers are protandrous as the stamens dehisce 1-2 h after their opening. A circular nectariferous tissue is present at the base of the ovary, secreting copious nectar throughout the life of flower. The stigma becomes receptive in the afternoon between 3.00 – 4.30 pm. However, the stigmatic lobes close down by various kinds of stimuli including self pollen, but reopens after some time. Only the honeybees, small bees and black ants visit the flowers, but are not effective pollinators as pollen grains on the stigmatic surface are either absent or only a few of them are present. Various hand pollination experiments conducted failed to produce fruits indicating that the plant is self-incompatible. The hand pollinated stigmatic surface shows only 2-3% pollen germination with small pollen tubes which fail to reach the ovules may be due to low temperature during the flowering period. Pollen-ovule ratio indicates that its facultative xenogamous nature.Fil: Singh, Sweety. Dr. B.R. Ambedkar University. School of Life Sciences. Department of Botany; IndiaFil: Chauhan, Seema. Dr. B.R. Ambedkar University. School of Life Sciences. Department of Botany; IndiaFil: Galetto, Leonardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; ArgentinaThe Society of Plant Reproductive Biology2009-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/21218Singh, Sweety; Chauhan, Seema; Galetto, Leonardo; Reproductive biology of Pyrostegia venusta (Ker-Gawl.) Miers (Bignoniaceae) with special reference to seedlessness; The Society of Plant Reproductive Biology; The Journal of Plant Reproductive Biology; 1; 1; 1-2009; 87-920975-42962249-7390CONICET DigitalCONICETenginfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:03:48Zoai:ri.conicet.gov.ar:11336/21218instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-10 13:03:49.044CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Reproductive biology of Pyrostegia venusta (Ker-Gawl.) Miers (Bignoniaceae) with special reference to seedlessness
title Reproductive biology of Pyrostegia venusta (Ker-Gawl.) Miers (Bignoniaceae) with special reference to seedlessness
spellingShingle Reproductive biology of Pyrostegia venusta (Ker-Gawl.) Miers (Bignoniaceae) with special reference to seedlessness
Singh, Sweety
Biologia Reproductiva
title_short Reproductive biology of Pyrostegia venusta (Ker-Gawl.) Miers (Bignoniaceae) with special reference to seedlessness
title_full Reproductive biology of Pyrostegia venusta (Ker-Gawl.) Miers (Bignoniaceae) with special reference to seedlessness
title_fullStr Reproductive biology of Pyrostegia venusta (Ker-Gawl.) Miers (Bignoniaceae) with special reference to seedlessness
title_full_unstemmed Reproductive biology of Pyrostegia venusta (Ker-Gawl.) Miers (Bignoniaceae) with special reference to seedlessness
title_sort Reproductive biology of Pyrostegia venusta (Ker-Gawl.) Miers (Bignoniaceae) with special reference to seedlessness
dc.creator.none.fl_str_mv Singh, Sweety
Chauhan, Seema
Galetto, Leonardo
author Singh, Sweety
author_facet Singh, Sweety
Chauhan, Seema
Galetto, Leonardo
author_role author
author2 Chauhan, Seema
Galetto, Leonardo
author2_role author
author
dc.subject.none.fl_str_mv Biologia Reproductiva
topic Biologia Reproductiva
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Pyrostegia venusta (Ker-Gawl.) Miers syn. Bignonia venusta (Bignoniaceae), commonly known as “orange trumpet creeper”, “flame vine” or “golden shower” bears large number of orange tubular flowers arranged in dichasial cyme. There are four didynamous stamens and the gynoecium is bicarpillary, syncarpous with bilocular ovary, long style and bilabiate stigma. Various floral-polymorphic features e.g. increased number of stamens and stigmatic lobes and heterostyly are recorded. Flowers open in the morning between 6.00–7.30 and remain open throughout the day and corolla abscises 12-14 h after anthesis. The flowers are protandrous as the stamens dehisce 1-2 h after their opening. A circular nectariferous tissue is present at the base of the ovary, secreting copious nectar throughout the life of flower. The stigma becomes receptive in the afternoon between 3.00 – 4.30 pm. However, the stigmatic lobes close down by various kinds of stimuli including self pollen, but reopens after some time. Only the honeybees, small bees and black ants visit the flowers, but are not effective pollinators as pollen grains on the stigmatic surface are either absent or only a few of them are present. Various hand pollination experiments conducted failed to produce fruits indicating that the plant is self-incompatible. The hand pollinated stigmatic surface shows only 2-3% pollen germination with small pollen tubes which fail to reach the ovules may be due to low temperature during the flowering period. Pollen-ovule ratio indicates that its facultative xenogamous nature.
Fil: Singh, Sweety. Dr. B.R. Ambedkar University. School of Life Sciences. Department of Botany; India
Fil: Chauhan, Seema. Dr. B.R. Ambedkar University. School of Life Sciences. Department of Botany; India
Fil: Galetto, Leonardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina
description Pyrostegia venusta (Ker-Gawl.) Miers syn. Bignonia venusta (Bignoniaceae), commonly known as “orange trumpet creeper”, “flame vine” or “golden shower” bears large number of orange tubular flowers arranged in dichasial cyme. There are four didynamous stamens and the gynoecium is bicarpillary, syncarpous with bilocular ovary, long style and bilabiate stigma. Various floral-polymorphic features e.g. increased number of stamens and stigmatic lobes and heterostyly are recorded. Flowers open in the morning between 6.00–7.30 and remain open throughout the day and corolla abscises 12-14 h after anthesis. The flowers are protandrous as the stamens dehisce 1-2 h after their opening. A circular nectariferous tissue is present at the base of the ovary, secreting copious nectar throughout the life of flower. The stigma becomes receptive in the afternoon between 3.00 – 4.30 pm. However, the stigmatic lobes close down by various kinds of stimuli including self pollen, but reopens after some time. Only the honeybees, small bees and black ants visit the flowers, but are not effective pollinators as pollen grains on the stigmatic surface are either absent or only a few of them are present. Various hand pollination experiments conducted failed to produce fruits indicating that the plant is self-incompatible. The hand pollinated stigmatic surface shows only 2-3% pollen germination with small pollen tubes which fail to reach the ovules may be due to low temperature during the flowering period. Pollen-ovule ratio indicates that its facultative xenogamous nature.
publishDate 2009
dc.date.none.fl_str_mv 2009-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/21218
Singh, Sweety; Chauhan, Seema; Galetto, Leonardo; Reproductive biology of Pyrostegia venusta (Ker-Gawl.) Miers (Bignoniaceae) with special reference to seedlessness; The Society of Plant Reproductive Biology; The Journal of Plant Reproductive Biology; 1; 1; 1-2009; 87-92
0975-4296
2249-7390
CONICET Digital
CONICET
url http://hdl.handle.net/11336/21218
identifier_str_mv Singh, Sweety; Chauhan, Seema; Galetto, Leonardo; Reproductive biology of Pyrostegia venusta (Ker-Gawl.) Miers (Bignoniaceae) with special reference to seedlessness; The Society of Plant Reproductive Biology; The Journal of Plant Reproductive Biology; 1; 1; 1-2009; 87-92
0975-4296
2249-7390
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv The Society of Plant Reproductive Biology
publisher.none.fl_str_mv The Society of Plant Reproductive Biology
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.993085

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