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Allozymic Markers and Genetic Characterization of a Natural Population of Vriesea friburgensis var. Paludosa, a Bromeliad from the Atlantic Forest

Published online by Cambridge University Press:  12 February 2007

G. M. Alves ,
A. R. Filho ,
A. Puchalski ,
M. S. Reis ,
R. O. Nodari  and
M. R. Guerra
G. M. Alves
Affiliation:
Núcleo de Pesquisas em Florestas Tropicais, Departamento de Fitotecnia, Centro de Ciências Agrárias, Universidade Federal de Santa Catarina, C.P. 476, Florianópolis, SC 88040-900, Brazil
A. R. Filho
Affiliation:
Núcleo de Pesquisas em Florestas Tropicais, Departamento de Fitotecnia, Centro de Ciências Agrárias, Universidade Federal de Santa Catarina, C.P. 476, Florianópolis, SC 88040-900, Brazil
A. Puchalski
Affiliation:
Núcleo de Pesquisas em Florestas Tropicais, Departamento de Fitotecnia, Centro de Ciências Agrárias, Universidade Federal de Santa Catarina, C.P. 476, Florianópolis, SC 88040-900, Brazil
M. S. Reis
Affiliation:
Núcleo de Pesquisas em Florestas Tropicais, Departamento de Fitotecnia, Centro de Ciências Agrárias, Universidade Federal de Santa Catarina, C.P. 476, Florianópolis, SC 88040-900, Brazil
R. O. Nodari
Affiliation:
Núcleo de Pesquisas em Florestas Tropicais, Departamento de Fitotecnia, Centro de Ciências Agrárias, Universidade Federal de Santa Catarina, C.P. 476, Florianópolis, SC 88040-900, Brazil
M. R. Guerra*
Affiliation:
Núcleo de Pesquisas em Florestas Tropicais, Departamento de Fitotecnia, Centro de Ciências Agrárias, Universidade Federal de Santa Catarina, C.P. 476, Florianópolis, SC 88040-900, Brazil
*
* Corresponding author. E-mail: mpguerra@cca.ufsc.br
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Abstract

A natural population of Vriesea friburgensis var. paludosa was genetically and demographically characterized. Four selected enzymatic systems were used. In total, 10 allozymic loci were analysed. The proportion of polymorphic loci was 70% and the number of alleles per locus was 2.3· The mean observed and expected heterozygosities were 0.234 and 0.226, respectively. An excess of heterozygotes was revealed by the value of the fixation index (—0.035). These indices showed the presence of high levels of genetic diversity in the population studied. A demographic survey revealed almost six times more vegetative than sexually reproductive plants. Reproductive plants were found only in clusters. The genetic diversity exhibited by this population, associated with vegetative as well as sexual propagation, resulting in clusters or colonies, would allow the employment of a sustainable management strategy for species conservation as well as its exploitation as an ornamental.

Keywords

bromeliadconservationgenetic characterizationmanagementnatural populationsVriesea friburgensis
Type
Research Article
Information
Plant Genetic Resources , Volume 2 , Issue 1 , April 2004 , pp. 23 - 28
Copyright
© NIAB 2004

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