Pollen Morphological and Morphometric Analysis in Species of the Aeschynomeneae and Adesmieae Tribes (Faboideae: Fabaceae)

Elsa C. Lattar; Griselda Bóbeda; Lucía M. Zini

doi:10.1080/01916122.2019.1589594

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24 January 2020 Pollen Morphological and Morphometric Analysis in Species of the Aeschynomeneae and Adesmieae Tribes (Faboideae: Fabaceae)

Elsa C. Lattar, Griselda Bóbeda, Lucía M. Zini

Author Affiliations +

Elsa C. Lattar,^1,2,*,** Griselda Bóbeda,^3,*** Lucía M. Zini^2,****

¹aCátedra de Morfología de Plantas Vasculares. Facultad de Ciencias Agrarias, Universidad Nacional de
²cInstituto de Botánica del Nordeste (UNNE-CONICET), Corrientes, Argentina
³bCátedra de Cálculo Estadístico. Facultad de Ciencias Agrarias, Universidad Nacional del Nordeste, C

^*CONTACT Elsa C. Lattar elsilattar@gmail.com Facultad de Ciencias Agrarias (FCA-UNNE), Instituto de Botánica del Nordeste (IBONE-UNNE-CONICET), Corrientes, Argentina.
^**Elsa Clorinda Lattar is a research professor of the Facultad de Ciencias Agrarias of the Universidad Nacional del Nordeste (FCA-UNNE) and at the Instituto de Botánica del Nordeste (IBONE-UNNE-CONICET). She is a professor of vascular plant morphology. She graduated from the Universidad del Nordeste with an MA in biology in 2008, and was awarded a PhD from the Universidad Nacional de Córdoba in 2014. Her research is focused on morphology, floral embryology and palynology of the Malvaceae, Linaceae, and Rutaceae among other families of interest.
^***Griselda Rita Romina Bóbeda is a research professor of the Facultad de Ciencias Agrarias of the Universidad Nacional del Nordeste (FCA-UNNE). She is a professor of statistical calculation and biometrics of the Mathematics Department. She graduated with an agronomist degree from Universidad Nacional del Nordeste in 2010. Her research focus is on biometrics in the area of biological and agricultural sciences.
^****Lucía Melisa Zini is a research assistant in the Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) at the Instituto de Botánica del Nordeste, Corrientes, Argentina. She graduated from the Universidad del Nordeste with an MA in biology in 2011, and from the Universidad Nacional del Nordeste with a PhD in 2016. Her research area is morphology, floral anatomy and palynology in Nympheaceae, Sapindaceae, Rosaceae and Caricaceae.

Palynology, 44(1):187-194 (2020). https://doi.org/10.1080/01916122.2019.1589594

Abstract

The aim of this study was to analyse the pollen morphological diversity among 19 species of the Adesmieae and Aeschynomeneae tribes with the purpose of evaluating their importance for the taxonomical delimitation of the Argentinean species and their systematic significance. Observations and measurements were performed on acetolysed pollen grains. The samples were examined under light and scanning electron microscopes. Principal component analysis (PCA) and conglomerate analysis were performed for quantitative morphological variables. The tribe Adesmieae is stenopalynous while the tribe Aeschynomeneae is eurypalynous; their pollen grains are 3-colporate, and they have lolongate, circular or lalongate endoapertures, semitectate-reticulate or tectate-perforate, fossulate, supra-rugulate exine, small to large size, and suboblate to prolate shapes. A key was made to identify and distinguish species of Adesmia, Aeschynomene, Chaetocalyx, Discolobium, and Poiretia. Exine sculpture and structure, presene of operculum, exine thickness, pollen shape, endoaperture shape, and pollen size all had taxonomic importance to distinguish the species inhabiting Argentina. The groupings recognised in recent classifications are hard to delimit on the basis of the palynological knowledge at this time since there are different pollen types but various of them occur among the three subclades. A framework for future evolutionary analyses within the dalbergioid clade is thus provided.

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Elsa C. Lattar, Griselda Bóbeda, and Lucía M. Zini "Pollen Morphological and Morphometric Analysis in Species of the Aeschynomeneae and Adesmieae Tribes (Faboideae: Fabaceae)," Palynology 44(1), 187-194, (24 January 2020). https://doi.org/10.1080/01916122.2019.1589594

Published: 24 January 2020

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