Data/hora: 06/06/2024 16:21:31

Biblioteca(s): | Embrapa Amazônia Oriental; Embrapa Florestas.
Data corrente: | 06/11/2009
Data da última atualização: | 16/11/2022
Autoria: | CARNEIRO, F. da S.; DEGEN, B.; KANASHIRO, M.; LACERDA, A. E. B. de; SEBBENN, A. M.
Afiliação: | FRANCIMARY DA SILVA CARNEIRO, CPATU; BERND DEGEN, INSTITUTE FÜR FORSTGENETIK; MILTON KANASHIRO, CPATU; ANDRE EDUARDO BISCAIA DE LACERDA, CNPF; ALEXANDRE MAGNO SEBBENN, INSTITUTO FLORESTAL DE SÃO PAULO.
Título: | High levels of pollen dispersal detected through paternity analysis from a continuous Symphonia globulifera population in the Brazilian Amazon.
Ano de publicação: | 2009
Fonte/Imprenta: | Forest Ecology and Management, v. 258, n. 7, p. 1260-1266, Sep. 2009.
DOI: | 10.1016/j.foreco.2009.06.019
Idioma: | Inglês
Conteúdo: | In this study, six highly polymorphic microsatellite loci and a categorical paternity analysis approach were used to investigate the contemporary pollen gene flow in the neotropical tree species Symphonia globulifera. Data for this study were taken from a 500 ha experimental plot in a dense terra firme forest in the Eastern Brazilian Amazon and included the mapping and genotyping of 161 reproductive trees, representing more than 90% of all adult trees, and the collection of 748 open-pollinated seeds from 56 seed-trees over two field seasons (2002 and 2003). High levels of pollen immigration from outside of the study plot were detected in both sampled seed-years (?49%) suggesting long distance pollen gene flow. Low levels of self-fertilization were also detected (?2%). The analysis showed long distance pollen dispersal occurred within the study area in both 2002 (? = 907 ± 652 m SD) and 2003 (? = 963 ± 542 m SD). Patterns of pollen dispersal distance within the plot were also found to be shorter than the distances between potential male parents and seed-trees. This result indicates that the distance between trees does not explain the identified pollen dispersal pattern. Our results support the hypothesis that animal pollinated species occurring in low-density populations can disperse pollen in long distances, despite the very dense nature of the forest.
Palavras-Chave: | Brasil.
Thesagro: | Dispersão; Pólen; Symphonia Globulifera.
Thesaurus Nal: | Amazonia.

Categoria do assunto:

--
K Ciência Florestal e Produtos de Origem Vegetal

Registro original: | Embrapa Amazônia Oriental (CPATU)

Exemplares:

CNPF - (46097-1) - UPC - AP - DD -  -  -  - DIS
CPATU - (43281-1) - UPC - AP - DD -  -  -  - DIS