Open AccessInbreeding depression in Vriesea gigantea , a perennial bromeliad from southern Brazil
Author(s) -
SAMPAIO JAMILLA ALVES TRINDADE,
PAGGI GECELE MATOS,
ZANELLA CAMILA MARTINI,
BRUXEL MANUELA,
PALMASILVA CLARISSE,
GOETZE MÁRCIA,
BÜTTOW MIRIAM VALLI,
BERED FERNANDA
Publication year - 2012
Publication title -
botanical journal of the linnean society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.872
H-Index - 68
eISSN - 1095-8339
pISSN - 0024-4074
DOI - 10.1111/j.1095-8339.2012.01240.x
Subject(s) - biology , selfing , inbreeding depression , outcrossing , gigantea , inbreeding , seed dispersal , mating system , genetic diversity , gene flow , population , outbreeding depression , ecology , biological dispersal , genetic variation , botany , mating , pollen , biochemistry , demography , sociology , gene
Inbreeding depression is a reduction of fitness in the progeny of closely related individuals and its effects are assigned to selfing or biparental inbreeding. Vriesea gigantea is a self‐compatible bromeliad species distributed in the Brazilian Atlantic rainforest and habitat destruction and fragmentation and collection have decreased the natural populations. We aim to describe the occurrence of inbreeding depression (δ) in three natural populations of V. gigantea and to correlate this phenomenon with previous studies of fertility, genetic diversity, population genetic structure, gene flow, mating system and seed dispersal in this species. Fifty‐four adult plants were sampled and 108 flowers were used for pollination treatments (selfing, outcrossing and control). For adult plants, we analysed plant and inflorescence height, flower numbers and seed set. In the progenies, evaluated parameters included seed germination and seedling survival rate. The results indicated low to moderate levels of inbreeding depression in V. gigantea (δ = 0.02 to 0.39), in agreement with molecular data from a previous study. Vriesea gigantea populations tolerate some degree of inbreeding, which is consistent with previous results on fertility, mating system, genetic diversity and gene flow. © 2012 The Linnean Society of London, Botanical Journal of the Linnean Society , 2012, 169 , 312–319.