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Registro Completo |
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Biblioteca(s): |
Embrapa Clima Temperado. |
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Data corrente: |
02/12/2020 |
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Data da última atualização: |
02/12/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SILVA, M. de S. A. da; YAMASHITA, O. M.; ROSSI, A. A. B.; CONCENÇO, G.; CARVALHO, M. A. C. de; SÁ, M. E. de. |
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Afiliação: |
MARCIA DE SOUZA ALMEIDA DA SILVA, UNIVERSIDADE DO ESTADO DE MATO GROSSO; OSCAR MITSUO YAMASHITA, UNIVERSIDADE DO ESTADO DE MATO GROSSO; ANA APARECIDA BANDINI ROSSI, UNIVERSIDADE DO ESTADO DE MATO GROSSO; GERMANI CONCENCO, CPACT; MARCO ANTONIO CAMILLO DE CARVALHO, UNIVERSIDADE DO ESTADO DE MATO GROSSO; MARCO EUSTÁQUIO DE SÁ, UNIVERSIDADE ESTADUAL PAULISTA JÚLIO DE MESQUITA FILHO. |
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Título: |
Influence of light and temperature on seed germination of macroptilium lathyroides. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
South American Journal Of Basic Education, Technical And Technological, Rio Branco, v. 7, n. 1, p. 311-324, jan/abr. 2020. |
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ISSN: |
2446-4821 |
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Idioma: |
Inglês |
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Conteúdo: |
Macroptiliumlathyroidesé uma espécie da família Fabaceae, nativa das Guianas, Brasil e Paraguai. É uma planta ruderal medianamente frequente em quase todo o país, infestando principalmente pomares, beira de estradas, gramados e terrenos baldios. As sementesforam coletadas em lavouras de soja infestadas por esta planta em Batayporã (MS). Posteriormente foram reproduzidas em ambiente protegido pertencente á UNEMAT -Alta Floresta -MT. Buscou-se avaliar o efeito da luz e da temperatura sobre a capacidade germinativa das sementes.Para o ensaio, as sementes foram submetidas à presença e ausência de luz nas temperaturas fixas 20, 25, 30, 35 e 40 oC e alternadas 15/25, 20/30, 25/35 e 25/40 oC. O delineamento utilizado foi inteiramente ao acaso, com quatro repetições de 25 sementes. Foram contadas diariamente as sementes germinadas, e no final de 10 dias, determinou-se IVG, percentual germinativo, comprimento da parte aérea, comprimento radicular e massa seca. Sementes de M. lathyroides, completam o processo de germinação de forma rápida e uniforme em temperaturas constantes entre 20 e 30 °C, e em temperaturas alternadas entre 15/25, 20/30 e 25/35 ºC. Temperatura de 40 ºC ocasiona atraso neste processo. As sementes desta espécie germinam tanto na presença como em ausência de luminosidade, sendo, portanto, considerada fotoblástica positiva ?preferencial?. |
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Palavras-Chave: |
Planta daninha. |
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Thesagro: |
Leguminosa; Soja. |
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Thesaurus Nal: |
Macroptilium lathyroides. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/218561/1/Silva-etal-2-2020.pdf
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Marc: |
LEADER 02159naa a2200241 a 4500
001 2127431
005 2020-12-02
008 2020 bl uuuu u00u1 u #d
022 $a2446-4821
100 1 $aSILVA, M. de S. A. da
245 $aInfluence of light and temperature on seed germination of macroptilium lathyroides.$h[electronic resource]
260 $c2020
520 $aMacroptiliumlathyroidesé uma espécie da família Fabaceae, nativa das Guianas, Brasil e Paraguai. É uma planta ruderal medianamente frequente em quase todo o país, infestando principalmente pomares, beira de estradas, gramados e terrenos baldios. As sementesforam coletadas em lavouras de soja infestadas por esta planta em Batayporã (MS). Posteriormente foram reproduzidas em ambiente protegido pertencente á UNEMAT -Alta Floresta -MT. Buscou-se avaliar o efeito da luz e da temperatura sobre a capacidade germinativa das sementes.Para o ensaio, as sementes foram submetidas à presença e ausência de luz nas temperaturas fixas 20, 25, 30, 35 e 40 oC e alternadas 15/25, 20/30, 25/35 e 25/40 oC. O delineamento utilizado foi inteiramente ao acaso, com quatro repetições de 25 sementes. Foram contadas diariamente as sementes germinadas, e no final de 10 dias, determinou-se IVG, percentual germinativo, comprimento da parte aérea, comprimento radicular e massa seca. Sementes de M. lathyroides, completam o processo de germinação de forma rápida e uniforme em temperaturas constantes entre 20 e 30 °C, e em temperaturas alternadas entre 15/25, 20/30 e 25/35 ºC. Temperatura de 40 ºC ocasiona atraso neste processo. As sementes desta espécie germinam tanto na presença como em ausência de luminosidade, sendo, portanto, considerada fotoblástica positiva ?preferencial?.
650 $aMacroptilium lathyroides
650 $aLeguminosa
650 $aSoja
653 $aPlanta daninha
700 1 $aYAMASHITA, O. M.
700 1 $aROSSI, A. A. B.
700 1 $aCONCENÇO, G.
700 1 $aCARVALHO, M. A. C. de
700 1 $aSÁ, M. E. de
773 $tSouth American Journal Of Basic Education, Technical And Technological, Rio Branco$gv. 7, n. 1, p. 311-324, jan/abr. 2020.
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Embrapa Clima Temperado (CPACT) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agrobiologia. Para informações adicionais entre em contato com cnpab.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
15/10/2003 |
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Data da última atualização: |
15/10/2003 |
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Autoria: |
SIQUEIRA, J. O.; SAGGIN JÚNIOR, O. J. |
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Título: |
Dependency on arbuscular mycorrhizal fungi and responsiveness of some Brazilian native woody species. |
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Ano de publicação: |
2001 |
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Fonte/Imprenta: |
Mycorrhiza, New York, v. 11, p. 245-255, 2001. |
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Idioma: |
Inglês |
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Conteúdo: |
Arbuscular mycorrhiza (AM) associations are of great importance in forest ecology and land rehabilitation in the tropics, but information on AM susceptibility, host dependence, and host responsiveness to the fungi is scarce. The present study was carried out under greenhouse conditions in a low-fertility soil with 29 woody species. There were very large differences between plant species in AM colonization, responsiveness to inoculation, mycorrhizal dependency and efficiency of phosphorus (P) uptake. All of these parameters were influenced by available soil p in solution. AM colonization ranged from zero in several non-mycotrophic species to >60% in the highly mycotrophic ones. Ten species (34% of the total) were found to be mycorrhiza- independent or non-mycotrophic, whereas the rest were highly to very highly dependent. The level of p above which there was no AM effect, defined here as the T' value, allowed distinction between AM dependence and responsiveness of the host and was very efficient for separating species according to these traits. Mycorrhizal responsiveness and dependency were not related and some species were responsive to increased p in the soil solution only when mycorrhizal. Efficiency of p uptake was affected by AM and by p levels. Some species exhibited a high efficiency independent of AM, while others were very inefficient even at high P. Despite differences between species, in most cases AM growth enhancement was nutritionally mediated. Differences in AM responsiveness and dependency as well as the importance of these concepts for reforestation technology in the tropics are discussed. MenosArbuscular mycorrhiza (AM) associations are of great importance in forest ecology and land rehabilitation in the tropics, but information on AM susceptibility, host dependence, and host responsiveness to the fungi is scarce. The present study was carried out under greenhouse conditions in a low-fertility soil with 29 woody species. There were very large differences between plant species in AM colonization, responsiveness to inoculation, mycorrhizal dependency and efficiency of phosphorus (P) uptake. All of these parameters were influenced by available soil p in solution. AM colonization ranged from zero in several non-mycotrophic species to >60% in the highly mycotrophic ones. Ten species (34% of the total) were found to be mycorrhiza- independent or non-mycotrophic, whereas the rest were highly to very highly dependent. The level of p above which there was no AM effect, defined here as the T' value, allowed distinction between AM dependence and responsiveness of the host and was very efficient for separating species according to these traits. Mycorrhizal responsiveness and dependency were not related and some species were responsive to increased p in the soil solution only when mycorrhizal. Efficiency of p uptake was affected by AM and by p levels. Some species exhibited a high efficiency independent of AM, while others were very inefficient even at high P. Despite differences between species, in most cases AM growth enhancement was nutritionally mediated. Differences in AM... Mostrar Tudo |
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Palavras-Chave: |
Tropical forest. |
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Thesagro: |
Floresta Tropical; Micorriza Vesicular Arbuscular. |
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Thesaurus NAL: |
vesicular arbuscular mycorrhizae. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02207naa a2200181 a 4500
001 1624560
005 2003-10-15
008 2001 bl --- 0-- u #d
100 1 $aSIQUEIRA, J. O.
245 $aDependency on arbuscular mycorrhizal fungi and responsiveness of some Brazilian native woody species.
260 $c2001
520 $aArbuscular mycorrhiza (AM) associations are of great importance in forest ecology and land rehabilitation in the tropics, but information on AM susceptibility, host dependence, and host responsiveness to the fungi is scarce. The present study was carried out under greenhouse conditions in a low-fertility soil with 29 woody species. There were very large differences between plant species in AM colonization, responsiveness to inoculation, mycorrhizal dependency and efficiency of phosphorus (P) uptake. All of these parameters were influenced by available soil p in solution. AM colonization ranged from zero in several non-mycotrophic species to >60% in the highly mycotrophic ones. Ten species (34% of the total) were found to be mycorrhiza- independent or non-mycotrophic, whereas the rest were highly to very highly dependent. The level of p above which there was no AM effect, defined here as the T' value, allowed distinction between AM dependence and responsiveness of the host and was very efficient for separating species according to these traits. Mycorrhizal responsiveness and dependency were not related and some species were responsive to increased p in the soil solution only when mycorrhizal. Efficiency of p uptake was affected by AM and by p levels. Some species exhibited a high efficiency independent of AM, while others were very inefficient even at high P. Despite differences between species, in most cases AM growth enhancement was nutritionally mediated. Differences in AM responsiveness and dependency as well as the importance of these concepts for reforestation technology in the tropics are discussed.
650 $avesicular arbuscular mycorrhizae
650 $aFloresta Tropical
650 $aMicorriza Vesicular Arbuscular
653 $aTropical forest
700 1 $aSAGGIN JÚNIOR, O. J.
773 $tMycorrhiza, New York$gv. 11, p. 245-255, 2001.
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Embrapa Agrobiologia (CNPAB) |
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