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Darwiniana
Article . 2011
Data sources: DOAJ
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CONICET Digital
Article . 2011
License: CC BY NC SA
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EL POLEN DE LAS ESPECIES ARGENTINAS DE TROPAEOLUM (TROPAEOLACEAE)

Authors: Garralla, Silvina Susana; Bulacio, Eva;

EL POLEN DE LAS ESPECIES ARGENTINAS DE TROPAEOLUM (TROPAEOLACEAE)

Abstract

En este trabajo se analizan las características polínicas de Tropaeolum argentinum, T. atrocapillare, T. capillare, T. incisum, T. meyeri, T. patagonicum, T. pentaphyllum, T. polyphyllum, T. porifolium, T. trialata, T. tuberosum subsp. silvestre, T. warmingianum subesp. warmingianum y T. willinkii con la finalidad de aportar datos para la delimitación de estas especies. Las observaciones, conteos y mediciones de los granos de polen se realizaron con microscopio óptico y microscopio electrónico de barrido. El estudio de los taxones pone de manifiesto que se trata de un género estenopalínico. Los granos son isopolares, bilaterales, radiosimétricos o bisimétricos, pequeños a medianos, con ámbito triangular a subcircular, ánguloaperturados, dicolporados, tricolporados o tetracolporados. La exina es tectada, perforada, con un retículo supratectal heterobrocado, angustimurado. Se discuten diferencias palinológicas entre los taxones y se brinda una clave palinológica para su diferenciación.

We analyzed pollen morphology of Tropaeolum argentinum, T. atrocapillare, T. capillare, T. incisum, T. meyeri, T. patagonicum, T. pentaphyllum, T. polyphyllum, T. porifolium, T. trialata, T. tuberosum subsp. silvestre, T. warmingianum subesp. warmingianum and T. willinkii to provide supplementary data for the delimitation of these species. Observations, counting and measuring of pollen grains were carried out under optical and scanning electron microscopes. This study points out that Tropaeolum is a stenopalynous genus. Grains are isopolar or isopolar bilateral, radiosymmetric or bisymmetric, small to medium-sized, triangular to subcircular, anguloaperturate, dicolporate, tricolporate or tetracolporate. The exine is tectate, perforate with reticulum supratectate, heterobrochate, angustimurate. Differences among the taxa are discussed, and a palynological key for the Argentinean species of Tropaeolum is presented.

Fil: Garralla, Silvina Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Centro de Ecología Aplicada del Litoral. Universidad Nacional del Nordeste. Centro de Ecología Aplicada del Litoral; Argentina

Fil: Bulacio, Eva. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo; Argentina

Country
Argentina
Keywords

Polen, QH301-705.5, Science, Q, Argentina, Botany, Tropaeolaceae, Tropaeolum, pollen, https://purl.org/becyt/ford/1.6, QK1-989, Biology (General), https://purl.org/becyt/ford/1

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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