Please use this identifier to cite or link to this item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1168051
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dc.contributor.authorLAMEGO, F. P.
dc.contributor.authorCARATTI, F. C.
dc.contributor.authorROMA-BURGOS, N.
dc.contributor.authorSCHERNER, A.
dc.contributor.authorZABALA-PARDO, D.
dc.contributor.authorAVILA, L. A.
dc.contributor.authorBASTIANI, M. O.
dc.date.accessioned2024-10-14T18:53:50Z-
dc.date.available2024-10-14T18:53:50Z-
dc.date.created2024-10-14
dc.date.issued2023
dc.identifier.citationAdvances in Weed Science, v. 41, 2023.
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1168051-
dc.descriptionAbstract: Background: Eragrostis plana , introduced from South Africa, is the most important invasive perennial weed in the grasslands of Southern Brazil (“Pampa biome”), becoming a threat in neighboring countries. How temperature, light, and water potential affect seed germination is poorly understood but essential to understand its invasiveness and dissemination. Objective: This study characterized the seed germination of E. plana from locations in the Brazilian Bioma Pampa under different conditions. Methods: Seed germination was evaluated by using a time-to-event model across a wide range of temperatures (15 to 45C), light (total darkness or 12-h light), and water potentials (0, -0.08, -0.2, -0.25, -0.5, -0.75, -1, and -1.5 MPa). Results: E. plana seeds did not germinate below 15C and at water potential lower than -0.75 MPa. Among populations, the highest germination was at 40C (> 90%). The base temperature for germination ranged from 12.3 to 15.6C across populations. E. plana did not germinate more than 40% at 25C, except for one population (Caçapava do Sul), with a germination capacity of 73%. Light is a requirement for a fraction of the seeds as darkness inhibits the germination of a fraction of the seeds as well. Conclusions: E. plana could adapt to cooler temperatures, as shown by the ability of the Caçapava do Sul population to germinate at low temperatures. This ability for seed germination help to explain why E. plana has successfully invaded the rangelands of Southern Brazil, spreading around neighboring countries. Management strategies have to be urgently adopted to avoid its dissemination abroad.
dc.language.isoeng
dc.rightsopenAccess
dc.subjectInvasividade
dc.subjectBioma pampa
dc.subjectInvasiveness
dc.subjectTough lovegrass
dc.titleFactors affecting seed germination of Eragrostis plana populations.
dc.typeArtigo de periódico
dc.subject.thesagroErva Daninha
dc.subject.thesagroEragrostis Plana
dc.subject.thesagroPastagem
dc.subject.thesagroPastagem Nativa
dc.subject.thesagroCapim
dc.subject.thesagroPotencial Hídrico
dc.subject.nalthesaurusRangelands
dc.subject.nalthesaurusWater potential
riaa.ainfo.id1168051
riaa.ainfo.lastupdate2024-10-14
dc.contributor.institutionFABIANE PINTO LAMEGO, CPACT
dc.contributor.institutionFERNANDA C. CARATTI, UNIVERSIDADE FEDERAL DE PELOTASeng
dc.contributor.institutionNILDA ROMA-BURGOS, UNIVERSITY OF ARKANSASeng
dc.contributor.institutionANANDA SCHERNER, UNIVERSIDADE FEDERAL DE PELOTASeng
dc.contributor.institutionDIANA ZABALA-PARDO, UNIVERSIDADE FEDERAL DE PELOTASeng
dc.contributor.institutionLUIS A. AVILA, UNIVERSIDADE FEDERAL DE PELOTASeng
dc.contributor.institutionMARLON O. BASTIANI, UNIVERSIDADE FEDERAL DE PELOTAS.eng
Appears in Collections:Artigo em periódico indexado (CPACT)

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