Biología floral de Passiflora foetida (Passifloraceae)

A reproductive experiment shows that Passiflora foetida is autocompatible. Observations of floral characteristics and visitors during anthesis, plus the analysis of pollen allowed identification of floral syndrome (melittophily) and functions for each visitor. Anthesis occurs from 6 to 11 AM. Three...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Amela García, M.T., Hoc, P.S.
Formato: JOUR
Materias:
Floral syndrome
Flower visitors
Passiflora
Pollinators
Reproductive system
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00347744_v46_n2_p191_AmelaGarcia
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00347744_v46_n2_p191_AmelaGarcia
record_format dspace
spelling todo:paper_00347744_v46_n2_p191_AmelaGarcia2023-10-03T14:46:18Z Biología floral de Passiflora foetida (Passifloraceae) Amela García, M.T. Hoc, P.S. Floral syndrome Flower visitors Passiflora Pollinators Reproductive system A reproductive experiment shows that Passiflora foetida is autocompatible. Observations of floral characteristics and visitors during anthesis, plus the analysis of pollen allowed identification of floral syndrome (melittophily) and functions for each visitor. Anthesis occurs from 6 to 11 AM. Three floral phases were identified: 1) stigmas above anthers, 2) stigmas at anther level, 3) stigmas above anthers; radii, petals and sepals become incurved. The stigmas are receptive during the whole anthesis. The concentration of sugars in nectar is 34%. The predominant color in the visible spectrum is white. The stamens and the gynoecium contrast against the limen and androgynophore in the UV spectrum, maybe a nectar guide. Three species of hymenopterans are the most frequent and constant visitors: Ptiloglossa tarsata (Colletidae) always contact the anthers and the stigmas while sucking nectar, carry a high percentage of P. foetida pollen and visit flowers in phases 1 and 2; they can be considered the main pollinators. Pseudaugochloropsis sp. (Halictidae) rarely contact anthers and stigmas while puncturing the limen to access nectar, and visit flowers in phases 2 and 3; they are nectar robbers that rarely pollinate. Augochlorella sp. (Halictidae) collect pollen without touching the stigmas and visit flowers in phases 2 and 3; they are pollen thieves. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00347744_v46_n2_p191_AmelaGarcia
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Floral syndrome
Flower visitors
Passiflora
Pollinators
Reproductive system
spellingShingle Floral syndrome
Flower visitors
Passiflora
Pollinators
Reproductive system
Amela García, M.T.
Hoc, P.S.
Biología floral de Passiflora foetida (Passifloraceae)
topic_facet Floral syndrome
Flower visitors
Passiflora
Pollinators
Reproductive system
description A reproductive experiment shows that Passiflora foetida is autocompatible. Observations of floral characteristics and visitors during anthesis, plus the analysis of pollen allowed identification of floral syndrome (melittophily) and functions for each visitor. Anthesis occurs from 6 to 11 AM. Three floral phases were identified: 1) stigmas above anthers, 2) stigmas at anther level, 3) stigmas above anthers; radii, petals and sepals become incurved. The stigmas are receptive during the whole anthesis. The concentration of sugars in nectar is 34%. The predominant color in the visible spectrum is white. The stamens and the gynoecium contrast against the limen and androgynophore in the UV spectrum, maybe a nectar guide. Three species of hymenopterans are the most frequent and constant visitors: Ptiloglossa tarsata (Colletidae) always contact the anthers and the stigmas while sucking nectar, carry a high percentage of P. foetida pollen and visit flowers in phases 1 and 2; they can be considered the main pollinators. Pseudaugochloropsis sp. (Halictidae) rarely contact anthers and stigmas while puncturing the limen to access nectar, and visit flowers in phases 2 and 3; they are nectar robbers that rarely pollinate. Augochlorella sp. (Halictidae) collect pollen without touching the stigmas and visit flowers in phases 2 and 3; they are pollen thieves.
format JOUR
author Amela García, M.T.
Hoc, P.S.
author_facet Amela García, M.T.
Hoc, P.S.
author_sort Amela García, M.T.
title Biología floral de Passiflora foetida (Passifloraceae)
title_short Biología floral de Passiflora foetida (Passifloraceae)
title_full Biología floral de Passiflora foetida (Passifloraceae)
title_fullStr Biología floral de Passiflora foetida (Passifloraceae)
title_full_unstemmed Biología floral de Passiflora foetida (Passifloraceae)
title_sort biología floral de passiflora foetida (passifloraceae)
url http://hdl.handle.net/20.500.12110/paper_00347744_v46_n2_p191_AmelaGarcia
work_keys_str_mv AT amelagarciamt biologiafloraldepassiflorafoetidapassifloraceae
AT hocps biologiafloraldepassiflorafoetidapassifloraceae
_version_ 1782030883142762496

Ejemplares similares