%0 Journal Article
%T Mating system in Myracrodruon urundeuva (Anarcadiaceae): implications for conservation genetics
%A Gaino
%A Ana Paula Silva Campos
%A Moraes
%A Mario Luiz Teixeira de
%A Moreira
%A Juliana Prado
%A Cardin
%A Laila Toniol
%A Moraes
%A Marcela Aparecida
%A Silva
%A Alexandre Marques da
%A Freitas
%A Miguel Luiz Menezes
%A Sebbenn
%A Alexandre Magno
%J Brazilian Journal of Botany
%D 2011
%I Scientific Electronic Library Online
%R 10.1590/S0100-84042011000400008
%X the aims of this study were to investigate the mating system of a fragmented population of the dioecious tropical tree myracrodruon urundeuva allem£¿o, using five microsatellite loci and the mixed mating and correlated mating models. the study was conducted in the esta£¿£¿o ecol¨®gica de paulo de farias (436 ha), where the population occupies about 142 ha. the mating system was estimated using 514 open-pollinated offspring, collected from 30 seed-trees. estimates of the multilocus outcrossing rate confirm that the species is dioecious (tm = 1.0). low levels of mating among relatives were detected in the population (1 - ts = 0.020). the estimate of paternity correlation (rp(m)) indicated that offsprings were composed of mixtures of half-sibs and full-sibs, with the latter occurring at a low frequency (average of 0.148). the estimated coancestry coefficient within families (¦È = 0.147) was larger and the effective population size (ne(v)) was lower (ne(v) = 2.98) than expected in progenies from panmictic populations (¦È = 0.125, ne(v) = 4, respectively). in terms of conservation, the results indicate that to retain an effective population size of 150, is necessary to collect seeds from at least 50 seed-trees.
%K correlated matings
%K fragmentation
%K microsatellite
%K variance effective population size.
%U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S0100-84042011000400008&lng=en&nrm=iso&tlng=en