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Registro completo
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Biblioteca (s) : |
INIA Tacuarembó. |
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Fecha : |
21/02/2014 |
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Actualizado : |
22/02/2014 |
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Afiliación : |
Ministerio de Agricultura y Pesca |
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Título : |
Análisis económico de los sistemas de producción tradicional y mejorado del área basáltica del Uruguay |
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Fecha de publicación : |
1974 |
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Fuente / Imprenta : |
Montevideo (Uruguay): MAP; DGEA; DIEA, 1974. |
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Páginas : |
169p. |
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Serie : |
Serie Técnica (MAP) |
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Idioma : |
Español |
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Thesagro : |
ANALISIS ECONOMICO; CAPITAL; EQUIPO; FACTORES DE PRODUCCION; INSUMOS AGRICOLAS; PRECIOS; PRODUCCION ANIMAL; PRODUCCION DE PIENSOS; PROGRAMACION LINEAL; RENTABILIDAD; SUELO BASALTICO; URUGUAY. |
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Asunto categoría : |
-- |
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Marc : |
LEADER 00737nam a2200253 a 4500
001 1016445
005 2014-02-22
008 1974 bl uuuu u00u1 u #d
245 $aAnálisis económico de los sistemas de producción tradicional y mejorado del área basáltica del Uruguay
260 $aMontevideo (Uruguay): MAP; DGEA; DIEA$c1974
300 $a169p.
490 $aSerie Técnica (MAP)
650 $aANALISIS ECONOMICO
650 $aCAPITAL
650 $aEQUIPO
650 $aFACTORES DE PRODUCCION
650 $aINSUMOS AGRICOLAS
650 $aPRECIOS
650 $aPRODUCCION ANIMAL
650 $aPRODUCCION DE PIENSOS
650 $aPROGRAMACION LINEAL
650 $aRENTABILIDAD
650 $aSUELO BASALTICO
650 $aURUGUAY
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INIA Tacuarembó (TBO) |
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Registro completo
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Biblioteca (s) : |
INIA Treinta y Tres. |
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Fecha actual : |
23/07/2020 |
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Actualizado : |
23/07/2020 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
Internacional - -- |
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Autor : |
GUIDO, A.; QUIÑONES, A.; PEREIRA, A.L.; SILVA, E.R. DA |
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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. |
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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?]. |
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Fecha de publicación : |
2020 |
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Fuente / Imprenta : |
Ecología Austral, Agosto 2020, v. 30, p. 295-303. |
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Idioma : |
Inglés |
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Notas : |
History article: Recibido: 12 de Diciembre de 2019//Aceptado: 27 de Abril de 2020. |
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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 |
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Palabras claves : |
BERMUDAGRASS; CAPIM ANNONI; FITOTOXINAS; GRAMILLA; INVASION; LOVEGRASS; PASTIZALES DEL RIO DE LA PLATA; PHYTOTOXINS; RIO DE LA PLATA GRASSLANDS. |
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Asunto categoría : |
H60 Malezas y escardas |
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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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