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Biblioteca (s) : |
INIA Treinta y Tres. |
Fecha : |
23/07/2020 |
Actualizado : |
23/07/2020 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Autor : |
GUIDO, A.; QUIÑONES, A.; PEREIRA, A.L.; SILVA, E.R. DA |
Afiliación : |
ANACLARA GUIDO BOLIOLI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; AMPARO QUIÑONES DELLEPIANE, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ANA LAURA PEREIRA AMATO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ELIANE REGINA DA SILVA, Universidade Federal do Río Grande do Sul, Instituto de Biociencias, Depto. de botanica. Porto Alegre, RS, Brazil. |
Título : |
Are the invasive grasses Cynodon dactylon and Eragrostis plana more phytotoxic than a co-occurring native? [¿Las gramíneas invasoras Cynodon dactylon y Eragrostis plana son más fitotóxicas que una nativa coexistente?]. |
Fecha de publicación : |
2020 |
Fuente / Imprenta : |
Ecología Austral, Agosto 2020, v. 30, p. 295-303. |
Idioma : |
Inglés |
Notas : |
History article: Recibido: 12 de Diciembre de 2019//Aceptado: 27 de Abril de 2020. |
Contenido : |
ABSTRACT. Allelopathy, the release of phytotoxins by plants, may be a key mechanism by which an invasive species displaces residents. However, methodological procedures are still questioned in the literature. We evaluated the phytotoxic effects of Cynodon dactylon and Eragrostis plana, the most invasive grasses of the Río de la Plata grasslands. Although allelopathy has been claimed as one of the possible mechanisms involved in the establishment and impact of these species, no empirical evidence has convincingly supported it. We performed a germination experiment to assess the effect of both invasive species on Eragrostis bahiensis, a native grass from the region. We used aqueous extracts from fresh and dry leaves of three donor species: two invasive (C. dactylon and E. plana) and one co-occurring native from the introduced range (Coelorachis selloana). This approach allows to relativize the invasive species effect from resident species, according to the novel weapon hypothesis. As a result, only aqueous extracts from dried leaves inhibited the germination and early growth of E. bahiensis. The magnitude of these effects varied between donor species, but there was no consensus to conclude both invasive species had greater effects. Cynodon dactylon caused the strongest inhibitory effect on E. bahiensis. However, the native C. selloana also presented a potent inhibitory effect, stronger than the well-known invasive E. plana. Thus, the role of allelopathy on E. plana invasion in the Río de la Plata grasslands should be questioned. Finally, we addressed some suggestions for improving experimental design for testing the novelty of phytotoxic effects in the introduced range. MenosABSTRACT. Allelopathy, the release of phytotoxins by plants, may be a key mechanism by which an invasive species displaces residents. However, methodological procedures are still questioned in the literature. We evaluated the phytotoxic effects of Cynodon dactylon and Eragrostis plana, the most invasive grasses of the Río de la Plata grasslands. Although allelopathy has been claimed as one of the possible mechanisms involved in the establishment and impact of these species, no empirical evidence has convincingly supported it. We performed a germination experiment to assess the effect of both invasive species on Eragrostis bahiensis, a native grass from the region. We used aqueous extracts from fresh and dry leaves of three donor species: two invasive (C. dactylon and E. plana) and one co-occurring native from the introduced range (Coelorachis selloana). This approach allows to relativize the invasive species effect from resident species, according to the novel weapon hypothesis. As a result, only aqueous extracts from dried leaves inhibited the germination and early growth of E. bahiensis. The magnitude of these effects varied between donor species, but there was no consensus to conclude both invasive species had greater effects. Cynodon dactylon caused the strongest inhibitory effect on E. bahiensis. However, the native C. selloana also presented a potent inhibitory effect, stronger than the well-known invasive E. plana. Thus, the role of allelopathy on E. plana invasion in... Presentar Todo |
Palabras claves : |
BERMUDAGRASS; CAPIM ANNONI; FITOTOXINAS; GRAMILLA; INVASION; LOVEGRASS; PASTIZALES DEL RIO DE LA PLATA; PHYTOTOXINS; RIO DE LA PLATA GRASSLANDS. |
Asunto categoría : |
H60 Malezas y escardas |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/14556/1/Guido-2020.pdf
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Marc : |
LEADER 02683naa a2200277 a 4500 001 1061234 005 2020-07-23 008 2020 bl uuuu u00u1 u #d 100 1 $aGUIDO, A. 245 $aAre the invasive grasses Cynodon dactylon and Eragrostis plana more phytotoxic than a co-occurring native? [¿Las gramíneas invasoras Cynodon dactylon y Eragrostis plana son más fitotóxicas que una nativa coexistente?].$h[electronic resource] 260 $c2020 500 $aHistory article: Recibido: 12 de Diciembre de 2019//Aceptado: 27 de Abril de 2020. 520 $aABSTRACT. Allelopathy, the release of phytotoxins by plants, may be a key mechanism by which an invasive species displaces residents. However, methodological procedures are still questioned in the literature. We evaluated the phytotoxic effects of Cynodon dactylon and Eragrostis plana, the most invasive grasses of the Río de la Plata grasslands. Although allelopathy has been claimed as one of the possible mechanisms involved in the establishment and impact of these species, no empirical evidence has convincingly supported it. We performed a germination experiment to assess the effect of both invasive species on Eragrostis bahiensis, a native grass from the region. We used aqueous extracts from fresh and dry leaves of three donor species: two invasive (C. dactylon and E. plana) and one co-occurring native from the introduced range (Coelorachis selloana). This approach allows to relativize the invasive species effect from resident species, according to the novel weapon hypothesis. As a result, only aqueous extracts from dried leaves inhibited the germination and early growth of E. bahiensis. The magnitude of these effects varied between donor species, but there was no consensus to conclude both invasive species had greater effects. Cynodon dactylon caused the strongest inhibitory effect on E. bahiensis. However, the native C. selloana also presented a potent inhibitory effect, stronger than the well-known invasive E. plana. Thus, the role of allelopathy on E. plana invasion in the Río de la Plata grasslands should be questioned. Finally, we addressed some suggestions for improving experimental design for testing the novelty of phytotoxic effects in the introduced range. 653 $aBERMUDAGRASS 653 $aCAPIM ANNONI 653 $aFITOTOXINAS 653 $aGRAMILLA 653 $aINVASION 653 $aLOVEGRASS 653 $aPASTIZALES DEL RIO DE LA PLATA 653 $aPHYTOTOXINS 653 $aRIO DE LA PLATA GRASSLANDS 700 1 $aQUIÑONES, A. 700 1 $aPEREIRA, A.L. 700 1 $aSILVA, E.R. DA 773 $tEcología Austral, Agosto 2020$gv. 30, p. 295-303.
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INIA Treinta y Tres (TT) |
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Registro completo
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Biblioteca (s) : |
INIA Treinta y Tres. |
Fecha actual : |
05/09/2017 |
Actualizado : |
05/07/2019 |
Tipo de producción científica : |
Capítulo en Libro Técnico-Científico |
Autor : |
PÉREZ DE VIDA, F.; BLANCO, P.H.; VARGAS, J. |
Afiliación : |
FERNANDO BLAS PEREZ DE VIDA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; PEDRO HORACIO BLANCO BARRAL, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; JOSE EDUARDO VARGAS MANCUELLO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
Evaluación final de cultivares: Paso de la Laguna, época 1. |
Fecha de publicación : |
2017 |
Fuente / Imprenta : |
In: Zorrilla, G.; Martínez, S.; Saravia, H. (Eds.) Arroz 2017. Montevideo (UY): INIA, 2017. |
Páginas : |
p. 8-10. |
Serie : |
(INIA Serie Técnica; 233) |
ISBN : |
978-9974-38-381-4 |
ISSN : |
1688-9266 |
DOI : |
http://doi.org/10.35676/INIA/ST.233 |
Idioma : |
Español |
Palabras claves : |
GERMOPLASMA ELITE; INTERACCIÓN GENOTIPO-AMBIENTE. |
Thesagro : |
RENDIMIENTO. |
Asunto categoría : |
F30 Genética vegetal y fitomejoramiento |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/7454/1/ST-233-p.8-10.pdf
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Marc : |
LEADER 00738naa a2200229 a 4500 001 1057516 005 2019-07-05 008 2017 bl uuuu u00u1 u #d 020 $a978-9974-38-381-4 022 $a1688-9266 024 7 $ahttp://doi.org/10.35676/INIA/ST.233$2DOI 100 1 $aPÉREZ DE VIDA, F. 245 $aEvaluación final de cultivares$bPaso de la Laguna, época 1.$h[electronic resource] 260 $c2017 300 $ap. 8-10. 490 $a(INIA Serie Técnica; 233) 650 $aRENDIMIENTO 653 $aGERMOPLASMA ELITE 653 $aINTERACCIÓN GENOTIPO-AMBIENTE 700 1 $aBLANCO, P.H. 700 1 $aVARGAS, J. 773 $tIn: Zorrilla, G.; Martínez, S.; Saravia, H. (Eds.) Arroz 2017. Montevideo (UY): INIA, 2017.
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