Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/49013
Título: Sex allocation in aquatic ferns: the role of body size
Palavras-chave: Resource allocation
Salvinia
Fern
Pandeiros River
Megasporangia
Microsporangia
Data do documento: Jul-2021
Editor: Wiley
Citação: COELHO, F. F. et al. Sex allocation in aquatic ferns: the role of body size. Plant Species Biology, [S.l.], v. 36, n. 3, p. 425-435, July 2021.
Resumo: Patterns of resource allocation reflect the plastic strategies that result from different selective pressures imposed by the environment. However, biomass allocation can be limited by architectural restrictions that change with the plant size. Our knowledge about sex allocation in heterosporous aquatic ferns remains scarce and studies on the reproductive strategies of these plants may yield valuable information regarding the evolutionary history of heterospory. Here, we investigate resources allocation, both in number and in biomass, to produce megasporangia and microsporangia among three species of Salvinia with different body sizes. Salvinia oblongifolia, S. auriculata and S. minima were collected in temporary ponds on the floodplain of the Pandeiros River in Brazil. We counted megasporangia and microsporangia, and measured their dry mass in each ramet. We also measured the total vegetative biomass and total reproductive biomass of each ramet in each species. Resource allocation to megasporangia production is associated with the specific body size of each species. However, the allocation for microsporangia production was higher in the species with intermediate size, which probably may be related to the drought event. The total reproductive biomass of each species was not dependent on the total vegetative biomass, but despite a similar reproductive effort, species differ on which sex is prioritized in the allocation process. Our results provide the first data about the processes underlying the sex allocation of Salvinia in the floodplains. The production of sori is size dependent in each Salvinia species and is shaped by drought, an intense selective pressure in temporary wet habitats.
URI: https://esj-journals.onlinelibrary.wiley.com/doi/abs/10.1111/1442-1984.12324
http://repositorio.ufla.br/jspui/handle/1/49013
Aparece nas coleções:DBI - Artigos publicados em periódicos

Arquivos associados a este item:
Não existem arquivos associados a este item.


Os itens no repositório estão protegidos por copyright, com todos os direitos reservados, salvo quando é indicado o contrário.