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Campo DCValorIdioma
dc.creatorMedeiros, Jessica Cristina Carvalho-
dc.creatorSilva, Josiane Carvalho Fonseca-
dc.creatorResende, Tamiris da Silveira Campos-
dc.creatorTeodoro, Grazielle Sales-
dc.creatorPereira, Fabrício José-
dc.creatorCoelho, Flávia de Freitas-
dc.date.accessioned2019-03-19T13:27:15Z-
dc.date.available2019-03-19T13:27:15Z-
dc.date.issued2018-
dc.identifier.citationMEDEIROS, J. C. C. et al. Ramet versus sporocarp production in the aquatic fern Salvinia auriculata (Salviniaceae): the role of shading. Australian Journal of Botany, [S.l.], v. 66, n. 7, p. 583-588, 2018. DOI: 10.1071/BT18062.pt_BR
dc.identifier.urihttp://www.publish.csiro.au/BT/BT18062pt_BR
dc.identifier.urihttp://repositorio.ufla.br/jspui/handle/1/33218-
dc.description.abstractAquatic plants exposed to environmental changes exhibit plastic responses, resulting in functional adjustments to reduce stress effects. Lack of light can limit plant development and can affect biomass allocation and reproduction, stressing plants and sometimes halting their growth. Shading techniques have been used to control the excessive growth of weed plants, such as the aquatic fern Salvinia auriculata Aublet that can form dense mats on the water surface, causing problems in water use. We used shading nets in a greenhouse experiment to evaluate the effect of shade on the biomass of S. auriculata, and to determine if the fern changes its allocation of biomass to sexual (sporocarps) or asexual (buds) reproduction under different shade levels (full-sun control, 35% shade, and 70% shade). Under shade conditions, ramet biomass decreased and no sporocarps were produced, although the number of buds increased. Production of structures for sexual reproduction incurs a high energy cost, so S. auriculata invested in bud production (clonal reproduction). The differing energy requirements resulted in a significant trade-off between bud and sporocarp production. In conclusion, our study indicated that shading is not an efficient control technique for S. auriculata since it did not affect the clonal reproduction, a strategy that accelerates colonisation and facilitates rapid spread.pt_BR
dc.languageen_USpt_BR
dc.publisherCSIRO Publishingpt_BR
dc.rightsrestrictAccesspt_BR
dc.sourceAustralian Journal of Botanypt_BR
dc.subjectAsexual reproductionpt_BR
dc.subjectEnvironmental adaptationpt_BR
dc.subjectFern biologypt_BR
dc.subjectPlant propagationpt_BR
dc.subjectPlant stress tolerancept_BR
dc.subjectReproductive ecologypt_BR
dc.titleRamet versus sporocarp production in the aquatic fern Salvinia auriculata (Salviniaceae): the role of shadingpt_BR
dc.typeArtigopt_BR
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