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Germination characteristics of Syngonanthus seeds (Eriocaulaceae) in campos rupestres vegetation in south-eastern Brazil

Published online by Cambridge University Press:  30 November 2010

Patrícia G. Oliveira  and
Queila S. Garcia
Patrícia G. Oliveira
Affiliation:
Laboratório de Fisiologia Vegetal, Departamento de Botânica, ICB, Universidade Federal de Minas Gerais (UFMG), Av. Antônio Carlos, 6627, Pampulha, Caixa Postal 486, CEP31270-970, Belo Horizonte, MG, Brazil
Queila S. Garcia*
Affiliation:
Laboratório de Fisiologia Vegetal, Departamento de Botânica, ICB, Universidade Federal de Minas Gerais (UFMG), Av. Antônio Carlos, 6627, Pampulha, Caixa Postal 486, CEP31270-970, Belo Horizonte, MG, Brazil
*
*Correspondence Fax: +55 31 3409 2671 Email: [email protected]
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Abstract

The present study evaluated the size and germination characteristics of seeds of seven species of Syngonanthus (distributed among four sections) that occur in different microhabitats in campos rupestres vegetation in Minas Gerais State, to determine if (1) the germination responses of the various species characterize a single germination pattern for the genus; and (2) there is a correlation between the germination characteristics and the geographic distribution as well as the microhabitat of the different species. The experiments were undertaken with recently collected seeds exposed to a 12-h photoperiod and continuous darkness, at constant temperatures of 10–40°C (at intervals of 5°C) in germination chambers. The results indicated the existence of a pattern of reduced seed size and light requirements for germination within the genus. The geographic distribution of different species of the genus cannot be explained by the responses of seed germination to different temperatures, but suggests some relationship to their edaphic microhabitats. Therefore, germination characteristics of the populations studied may have been selected to colonize specific environments at different soil water conditions.

Keywords

dormancygeographic distributionlightseed sizesoil water statustemperature
Type
Research Article
Information
Seed Science Research , Volume 21 , Issue 1 , March 2011 , pp. 39 - 45
Copyright
Copyright © Cambridge University Press 2010

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References

Abreu, M.E.P. and Garcia, Q.S. (2005) Efeito da luz e da temperatura na germinação de sementes de quatro espécies de Xyris L. (Xyridaceae) ocorrentes na Serra do Cipó, MG, Brasil. Acta Botanica Brasilica 19, 149–154.CrossRefGoogle Scholar
Andrade, M.J.G. (2007) Filogenia e taxonomia em Eriocaulaceae neotropicais. Dissertação, Universidade Estadual de Feira de Santana, Bahia, Brasil.Google Scholar
Angosto, T. and Matilla, A.J. (1993) Variations in seeds of three endemic leguminous species at different altitudes. Physiologia Plantarum 87, 329–334.CrossRefGoogle Scholar
Baskin, J.M. and Baskin, C.C. (1988) Germination ecophysiology of herbaceous plant species in a temperature region. American Journal of Botany 75, 286–305.CrossRefGoogle Scholar
Benech-Arnold, R. and Sánchez, R.A. (1995) Modeling weed seed germination. pp. 545–566in Kigel, J.; Galili, G. (Eds) Seed development and germination. New York, Academic Press.Google Scholar
Bewley, J.D. and Black, M. (1994) Seeds. Physiology of development and germination (2nd edition). London, Plenum Press.CrossRefGoogle Scholar
Conover, W.J. (1999) Practical nonparametric statistics (3rd edition). New York, John Wiley and Sons.Google Scholar
Ekstan, B., Johannessson, R. and Milberg, M.P. (1999) The effect of light and number of diurnal temperature fluctuations on germination of Phragmites australis. Seed Science Research 9, 165–170.CrossRefGoogle Scholar
Ellison, A.M. (2001) Interspecific and intraspecific variation in seed size and germination requirements of Sarracenia (Sarraceniaceae). American Journal of Botany 88, 429–437.CrossRefGoogle ScholarPubMed
Garcia, Q.S. and Diniz, I.S.S. (2003) Comportamento germinativo de três espécies de Vellozia da Serra do Cipó (MG). Acta Botanica Brasilica 17, 487–494.CrossRefGoogle Scholar
Garcia, Q.S., Jacobi, C.M. and Ribeiro, B.A. (2007) Resposta germinativa de duas espécies de Vellozia (Velloziaceae) dos ‘campos rupestres’ de Minas Gerais. Acta Botanica Brasilica 21, 451–456.CrossRefGoogle Scholar
Giulietti, A.M. and Hensold, N.C. (1991) Synonymization of the genera Comanthera and Carptotepala with Syngonanthus (Eriocaulaceae). Annals of the Missouri Botanical Garden 78, 273–295.CrossRefGoogle Scholar
Giulietti, N., Giulietti, A.M., Pirani, J.R. and Menezes, N.L. (1988) Estudos de sempre-vivas, importância econômica do extrativismo em Minas Gerais, Brasil. Acta Botanica Brasilica 1, 179–194.CrossRefGoogle Scholar
Giulietti, A.M., Harley, R.M., Queiróz, L.P., Wanderley, M.G.L. and Pirani, J.R. (2000) Caracterização e endemismos nos campos rupestres da Cadeia do Espinhaço. pp. 311–318in Cavalcnti, T.B.; Walter, B.M.T. (Eds) Tópicos Anuais em Botânica. Brasília, Embrapa Recursos Genéticos.Google Scholar
Giulietti, A.M., Harley, R.M., Queiróz, L.P., Wanderley, M.G.L. and Van den Berg, C. (2005) Biodiversity and conservation of plants in Brazil. Conservation Biology 19, 632–639.CrossRefGoogle Scholar
Hilhorst, H.W.M. (2008) Definition and hypotheses of seed dormancy. pp. 50–71in Bradford, K.J.; Nonogaki, H. (Eds) Seed development, dormancy and germination. Annual Plant Reviews. Vol. 27. Sheffield, UK, Blackwell Publishing.Google Scholar
Hughes, L., Dunlop, M., French, K., Leishman, M.R., Rice, B., Rodgerson, L. and Westoby, M. (1994) Predicting dispersal spectra: a minimal set of hypotheses based on plant attribute. Journal of Ecology 82, 933–950.CrossRefGoogle Scholar
Kigel, J. (1995) Seed germination in arid and semiarid regions. pp. 645–699in Kigel, J.; Galili, G. (Eds) Seed development and germination. New York, Academic Press.Google Scholar
Labouriau, L.G. (1983) A Germinação das Sementes. Washington, DC, Secretaria Geral da Organização dos Estados Americanos.Google Scholar
Leishman, M.R. and Westoby, M. (1994) The role of large seed size in shaded conditions; experimental evidence. Functional Ecology 8, 205–214.CrossRefGoogle Scholar
Mabberley, D.J. (1987) The plant book. Cambridge, UK, Cambridge University Press.Google Scholar
Marques, A.R., Garcia, Q.S., Resende, J.L.P. and Fernandes, G.W. (2000) Variations in leaf characteristics of two species of Miconia in the Brazilian cerrado under different light intensities. Tropical Ecology 41, 47–60.Google Scholar
Menezes, N.Z. and Giulietti, A.M. (2000) Campos rupestres. pp. 65–73 in Mendonça, M.P.; Lins, L.V. (Org.) Lista vermelha das espécies ameaçadas de extinção da flora de Minas Gerais. Belo Horizonte, Brasil, Fundação Biodiversitas e Fundação ZooBotãnica de Belo Horizonte.Google Scholar
Mercier, H. and Guerreiro-Filho, O. (1989) Germinação de Pleurostima fanniei Menezes, P. rogieri (Hort, ex Moore and Ayres) Menezes e Vellozia alata L.B. Smith (Velloziaceae) sob diferentes condições de temperatura. Hoehnea 16, 195–202.Google Scholar
Milberg, P., Anderson, L. and Thompson, K. (2000) Large-seeded species are less dependent on light for germination than small-seeded ones. Seed Science Research 10, 99–104.CrossRefGoogle Scholar
Oliveira, P.G. and Garcia, Q.S. (2005) Efeito da luz e da temperatura na germinação de sementes de Syngonanthus elegantulus Ruhland, S. elegans (Bong.) Ruhland e S. venustus Silveira (Eriocaulaceae). Acta Botanica Brasílica 19, 639–645.CrossRefGoogle Scholar
Pinto, L.C.M. (1996) Quantikov – Um analisador microestruturral para o ambiente Windows. Doctoral thesis, University of São Paulo (USP), São Paulo, Brazil.Google Scholar
Probert, R.J. (1992) The role of temperature in germination ecophysiology. pp. 285–325in Fenner, M. (Ed.) The ecology of regeneration in plant communities. Wallingford, UK, CAB International.Google Scholar
Ruhland, W. (1903) Eriocaulaceae. pp. 1–294in Engler, I. (Ed.) Das Pflanzenreich. Leipzig, Wilhelm Engelmann.Google Scholar
Sá e Carvalho, C.G. and Ribeiro, M.C. (1994a) Efeitos do armazenamento e de reguladores de crescimento na germinação de Paepalanthus speciosus, Eriocaulaceae. Revista Brasileira de Botânica 17, 61–65.Google Scholar
Sá e Carvalho, C.G. and Ribeiro, M.C. (1994b) Efeitos de choques térmicos na germinação de Paepalanthus speciosus Koern. (Eriocaulaceae). Acta Botanica Brasilica 8, 205–211.CrossRefGoogle Scholar
Scatena, V.L., Lemos, F.J.P. and Lima, A.A.A. (1996) Morfologia do desenvolvimento pós-seminal de Syngonanthus elegans e S. niveus (Eriocaulaceae). Acta Botanica Brasilica 10, 85–91.CrossRefGoogle Scholar
Schmidt, I.B, Figueiredo, I.B, Borghett, F. and Scariot, A. (2008) Produção e germinação de sementes de ‘capim dourado’, Syngonanthus nitens (Bong.) Ruhland (Eriocaulaceae): implicações para o manejo. Acta Botanica Brasilica 22, 37–42.CrossRefGoogle Scholar
Schütz, W. and Rave, G. (1999) The effect of cold stratification and light on the seed germination of temperate sedges (Carex) from various habitats and implications for regenerative strategies. Plant Ecology 144, 215–230.CrossRefGoogle Scholar
Sheldon, J.C. (1974) The behaviour of seeds in soil: III. The influence of seed morphology and the behaviour of seedlings on the establishment of plants from surface-lying seeds. Journal of Ecology 62, 7–66.CrossRefGoogle Scholar
Specht, C.E. and Keller, E.R.J. (1997) Temperature requirements for seed germination in species of the genus Allium L. Genetic Resources and Crop Evolution 44, 509–517.CrossRefGoogle Scholar
Stricker, D. (2008) BrightStat.com: Free statistics online. Computer Methods and Programs in Biomedicine 92, 135–143.CrossRefGoogle ScholarPubMed
Thompson, P.A. (1973) Geographical adaptation of seeds. pp. 31–58in Heydecker, W. (Ed.) Seed ecology. London, Butterworths.Google Scholar
Thompson, K. and Grime, J.P. (1983) A comparative study of germination responses to diurnally-fluctuating temperatures. Journal of Applied Ecology 20, 141–156.CrossRefGoogle Scholar
Unesco. (2005) Available athttp://portal.unesco.org/science/en/ev.php-URL_ID=6943URL_DO=DO_TOPIC&URL_SECTION=201.html (accessed 23 November 2010).Google Scholar
Van Assche, J., Van Nerum, D. and Darius, P. (2002) The comparative germination ecology of nine Rumex species. Plant Ecology 159, 131–142.CrossRefGoogle Scholar
Villalobos, A.E. and Peláez, D. (2001) Influences of temperature and water stress on germination and establishment of Prosopis caldenia Burk. Journal of Arid Environments 49, 321–328.CrossRefGoogle Scholar
Wanderley, M.G.L. (1992) Estudos taxonômicos no gênero Xyris L. (Xyridaceae) da Serra do Cipó, Minas Gerais, Brasil. Dissertation, Instituto de Biociências de São Paulo.Google Scholar