Application of principal component analysis to identify pollen subtypes in Miconia (Melastomataceae)
Keywords:
Miconia, PCA, Pollen, pollen subtypes, stenopalynousAbstract
Ceballos, Sergio J.; María E. García; Alber to C. Slanis; Nora J. F. Reyes. 2014. “Application of principal component analysis to identify pollen subtypes in Miconia (Melastomataceae)”. Lilloa 51 (2). Miconia Ruiz et Pav. inhabits forest regions being represented in Argentina by 10 species. The aim of this study was to identify possible pollen subtypes in the Argentine species of Miconia. Previous studies found that the genus is stenopalynous. Pollen grains of each species were measured with an optical microscope and a PCA was conducted based on a matrix of species versus morphometric variables of pollen grains. Two components were selected because these explained together 77% of the total variation in the data. Most of the variables were correlated with component 1. Three pollen subtypes were defined in the genus, but four of the species could not be included in any of them because they presented intermediated characters. It was concluded that multivariate analysis is a possible tool that helps to differentiate pollen subtypes within stenopalynous genera
Downloads
References
Barth M. O., Barbosa A. F. 1975. Catálogo sistemático dos polens das plantas arbóreas do Brasil Meridional XIX - Melastomataceae. Memórias do Instituto Oswaldo Cruz 73: 39-60.
Ceballos S. J., García M. E., Slanis A. C., Reyes N. J. F. 2012. Morfología polínica de las especies argentinas de Miconia (Melastomataceae). Ameghiniana Suplemento Resúmenes 49 (4): 129.
Di Rienzo J. A., Casanoves F., Balzarini M. G., Gonzalez L., Tablada M., Robledo C. W. 2008. InfoStat, versión 2008. Grupo InfoStat, Facultad de Ciencias Agropecuarias, Universidad Nacional de Córdoba, Argentina.
Erdtman G. 1952. Pollen Morphology and Plant Taxonomy: Angiosperms. Almqivst & Wiksells, Uppsala, Stockolm. 533 pp.
Erdtman G. 1960. The acetolysis method - a revised description. Svensk Botanisk Tidskrift 54: 561-564.
García M. E., Varela R. O., Reyes N. J. F., Prado F. E., González J. A. 2011. Análisis exploratorio de características morfométricas del polen de 15 variedades de quinoa (Chenopodium quinoa Willd.) aplicando componentes principales. Lilloa 48 (1): 11-16.
Goldenberg R. 2000. O Gênero Miconia Ruiz et Pav. (Melastomataceae). I. Listagens analíticas, II Revisao Taxonômica da Seção Hypoxanthus (Rich Ex DC) Hook. f. Tese de Doutorado. Universidade Estadual de Campinas.
Mambrín M. V., Avanza M. M., Ferrucci M. S.. 2010. Análisis morfológico y morfométrico del polen de Corchorus, Heliocarpus, Luehea, Mollia y Triumffeta (Malvaceae, Grewioideae) en la región austral de América del Sur. Darwiniana 48 (1): 45-58.
Mercado Gómez J. D., Solano Flórez L., Sánchez Montaño L. R. 2007. Morfología polínica para especies de 5 géneros de Melastomataceae registradas para Norte de Santandes, (Colombia). Bistua 5 (1): 71-86.
Punt W., Hoen P. P., Blackmore S., Le Thomas A. 2007. Glossary of pollen and spore terminology. Review of Palaeobotany and Palynology 143(1): 1-81.
Sáenz Laín C. 2004. Glosario de términos palinológicos. Lazaroa 25: 93-112.
Slanis A. C., Goldenberg R. 2011. Notas sobre el género Miconia (Melastomataceae) en la Argentina. Darwiniana 49 (1): 99-103.
Uribe A. F., Fonnegra G. R. 1979. Importancia de la forma, estructura y tamaño del polen en la determinación de la familia Melastomataceae. Universidad de Antioquía. Actualidades Biológicas 8 (27-28): 3-9.
Wodehouse R. 1935. Pollen grains. Mc Graw-Hill Book Company. New York & London, 559 pp.
