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Pollen and seed flow patterns of Carapa guianensis Aublet. (Meliaceae) in two types of Amazonian forest Genet. Mol. Biol.
Martins,Karina; Raposo,Andréa; Klimas,Christie A; Veasey,Elizabeth A; Kainer,Karen; Wadt,Lúcia Helena O.
Various factors affect spatial genetic structure in plant populations, including adult density and primary and secondary seed dispersal mechanisms. We evaluated pollen and seed dispersal distances and spatial genetic structure of Carapa guianensis Aublet. (Meliaceae) in occasionally inundated and terra firme forest environments that differed in tree densities and secondary seed dispersal agents. We used parentage analysis to obtain contemporary gene flow estimates and assessed the spatial genetic structure of adults and juveniles. Despite the higher density of adults (diameter at breast height ; 25 cm) and spatial aggregation in occasionally inundated forest, the average pollen dispersal distance was similar in both types of forest (195 ± 106min terra...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Gene flow; Parentage analysis; Scatterhoarding; Seed dispersal; Spatial genetic structure.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000500017
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DNA fingerprinting of water yam (Dioscorea alata) cultivars in Brazil based on microsatellite markers Horticultura Brasileira
Siqueira,Marcos VBM; Dequigiovanni,Gabriel; Corazon-Guivin,Mike A; Feltran,José C; Veasey,Elizabeth A.
This study aimed to fingerprint 36 water yam (Dioscorea alata) accessions using microsatellite markers. Ten accessions were collected in local markets from several municipalities in Brazil, eight were obtained from the 'Instituto Agronômico de Campinas' (IAC) germplasm collection and eighteen were collected directly from growers from São Paulo state. A total of nine microsatellite loci were used in the analysis. Loci revealed high polymorphism verified by elevated PIC values (0.57-0.77), and by high gene diversity and Shannon-Wiener indices (0.69 and 1.29 on average, respectively). The accessions were classified into two groups based on clustering analysis. One group contained mostly accessions from the IAC collection, including a commercial cultivar...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Dioscorea alata; Commercial varieties; Genetic diversity; Germplasm collection; SSR.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362012000400015
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