Data/hora: 09/06/2024 04:34:39

Provedor de dados: 	Genetics and Molecular Biology	
País: 	Brazil	
Título: 	Mating system in a neotropical tree species, Senna multijuga (Fabaceae)	
Autores: 	Ribeiro,Renata Acácio; Lovato,Maria Bernadete.	
Data: 	2004-01-01	
Ano: 	2004	
Palavras-chave: 	Isozymes; Mating systems; Neotropical tree; Senna multijuga.	
Resumo: 	Senna multijuga is a pioneer tropical tree species that occurs mainly in the Brazilian Atlantic forest. We investigated the mating system of two populations of S. multijuga, one located in a reserve area (RD1) and the other (RD2) about 15 km away. The mating system parameters were estimated using the mixed mating model (software MLTR). The two populations had significantly different outcrossing rates, with population RD2 having a high rate (t m = 0.838) and population RD1, a lower rate (t m = 0.540). The values of t s were different between the two populations and also lower than those of t m. Significant t m - t s estimates indicated that biparental inbreeding contributed to the apparent selfing rate in these populations. The correlation of paternity was significant in population RD2 (r p = 0.309), suggesting that the progeny were more closely related than inferred by the observed outcrossing rate. The estimates of correlation of paternity, biparental inbreeding and the significant differences in pollen and ovule allele frequencies indicated that population RD2 is genetically substructured. For a pioneer species such as S. multijuga, selfing can be an important strategy for occupying open areas.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572004000300018	
Editor: 	Sociedade Brasileira de Genética	
Relação: 	10.1590/S1415-47572004000300018	
Formato: 	text/html	
Fonte: 	Genetics and Molecular Biology  v.27 n.3 2004	
Fonte: 	info:eu-repo/semantics/openAccess