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Biblioteca(s): |
Embrapa Amapá. |
Data corrente: |
20/12/2007 |
Data da última atualização: |
13/10/2022 |
Tipo da produção científica: |
Artigo de Divulgação na Mídia |
Autoria: |
COSTA, N. de L. |
Afiliação: |
NEWTON DE LUCENA COSTA, CPAF-AP. |
Título: |
Leguminosas de múltiplo uso na Amazônia Ocidental. |
Ano de publicação: |
2007 |
Fonte/Imprenta: |
ClicNews, 03 jan. 2007. |
Páginas: |
1 p. |
Idioma: |
Português |
Conteúdo: |
Extensas áreas da Amazônia Ocidental apresentam solos de baixa e média fertilidade natural, onde predominam o modelo de agricultura itinerante, caracterizado pelo binômio derruba e queima. Aliado a outros fatores, é notável o declínio gradual da produtividade das culturas anuais e/ou perenes, reflexo da diminuição da fertilidade do solo, perdas de matéria orgânica, infestação de plantas invasoras e a deficiente reciclagem de nutrientes no solo, o que contribui para o abandono de áreas agrícolas ou sua transformação em pastagens. Desse modo, torna-se necessário o desenvolvimento de sistemas agrícolas mais sustentáveis sob o ponto de vista técnico, econômico, social e ambiental... |
Palavras-Chave: |
Leguminosas de multiplo uso. |
Categoria do assunto: |
-- |
URL: |
https://www.clicnews.com.br/agropecuaria/view.htm?id=55046
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Marc: |
LEADER 01075naa a2200145 a 4500 001 1350601 005 2022-10-13 008 2007 bl --- 0-- u #d 100 1 $aCOSTA, N. de L. 245 $aLeguminosas de múltiplo uso na Amazônia Ocidental. 260 $c2007 300 $a1 p. 520 $aExtensas áreas da Amazônia Ocidental apresentam solos de baixa e média fertilidade natural, onde predominam o modelo de agricultura itinerante, caracterizado pelo binômio derruba e queima. Aliado a outros fatores, é notável o declínio gradual da produtividade das culturas anuais e/ou perenes, reflexo da diminuição da fertilidade do solo, perdas de matéria orgânica, infestação de plantas invasoras e a deficiente reciclagem de nutrientes no solo, o que contribui para o abandono de áreas agrícolas ou sua transformação em pastagens. Desse modo, torna-se necessário o desenvolvimento de sistemas agrícolas mais sustentáveis sob o ponto de vista técnico, econômico, social e ambiental... 653 $aLeguminosas de multiplo uso 773 $tClicNews, 03 jan. 2007.
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![](/consulta/web/img/deny.png) | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Florestas. |
Data corrente: |
13/05/2020 |
Data da última atualização: |
05/01/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
TAHERI, S.; DECAËNS, T.; CUNHA, L.; BROWN, G. G.; SILVA, E. da; BARTZ, M. L. C.; BARETTA, D.; DUPONT, L. |
Afiliação: |
Sorbonne Universite; Universite de Montpellier; University of South Wales; GEORGE GARDNER BROWN, CNPF; Universidade Positivo; Universidade do Estado de Santa Catarina; Universite Paris. |
Título: |
Genetic evidence of multiple introductions and mixed reproductive strategy in the peregrine earthworm Pontoscolex corethrurus. |
Ano de publicação: |
2020 |
Fonte/Imprenta: |
Biological Invasions, v. 22, p. 2545-2557, 2020. |
DOI: |
DOI 10.1007/s10530-020-02270-0 |
Idioma: |
Inglês |
Conteúdo: |
Pontoscolex corethrurus is a well-known invasive earthworm in tropical zone which is believed to have originated from the Guayana Shield in South America and was described as parthenogenetic. A recent phylogenetic study revealed four cryptic species in the P. corethrurus complex (L1, L2, L3 and L4), among them L1 was particularly widespread and was proposed as P. corethrurus sensu stricto. Here, our aims were to investigate the genetic variation of P. corethrurus L1 in its presumed native and introduced ranges and to examine its reproductive strategy. An extensive dataset of 478 cytochrome oxidase I gene (COI) sequences, obtained in specimens sampled all around the world, revealed a weak COI haplotype diversity with one major haplotype (H1) present in 76% of the specimens. Analyses of the genetic variation of 12 L1 populations were done using both nuclear (226 AFLP profiles) and mitochondrial (269 COI sequences) genetic information. The high AFLP genotype diversity at the worldwide scale and the fact that no genotype was shared among populations, allowed to reject the ?super-clone? invasion hypothesis. Moreover, a similar level of mean genetic diversity indices were observed between the introduced and native ranges, a pattern explained by a history of multiple introductions of specimens from different parts of the world. At last, occurrence of identical AFLPs genotypes (i.e. clones) in several population confirmed asexual reproduction, but recombination was also revealed by gametic equilibrium analysis in some populations suggesting that P. corethrurus L1 may have a mixed reproductive strategy. MenosPontoscolex corethrurus is a well-known invasive earthworm in tropical zone which is believed to have originated from the Guayana Shield in South America and was described as parthenogenetic. A recent phylogenetic study revealed four cryptic species in the P. corethrurus complex (L1, L2, L3 and L4), among them L1 was particularly widespread and was proposed as P. corethrurus sensu stricto. Here, our aims were to investigate the genetic variation of P. corethrurus L1 in its presumed native and introduced ranges and to examine its reproductive strategy. An extensive dataset of 478 cytochrome oxidase I gene (COI) sequences, obtained in specimens sampled all around the world, revealed a weak COI haplotype diversity with one major haplotype (H1) present in 76% of the specimens. Analyses of the genetic variation of 12 L1 populations were done using both nuclear (226 AFLP profiles) and mitochondrial (269 COI sequences) genetic information. The high AFLP genotype diversity at the worldwide scale and the fact that no genotype was shared among populations, allowed to reject the ?super-clone? invasion hypothesis. Moreover, a similar level of mean genetic diversity indices were observed between the introduced and native ranges, a pattern explained by a history of multiple introductions of specimens from different parts of the world. At last, occurrence of identical AFLPs genotypes (i.e. clones) in several population confirmed asexual reproduction, but recombination was also revealed by ... Mostrar Tudo |
Palavras-Chave: |
Genetic diversity; Soil macrofauna; Tropical invasive species. |
Thesaurus NAL: |
Founder effect; Genetic recombination; Parthenogenesis. |
Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
Marc: |
LEADER 02500naa a2200289 a 4500 001 2122302 005 2021-01-05 008 2020 bl uuuu u00u1 u #d 024 7 $aDOI 10.1007/s10530-020-02270-0$2DOI 100 1 $aTAHERI, S. 245 $aGenetic evidence of multiple introductions and mixed reproductive strategy in the peregrine earthworm Pontoscolex corethrurus.$h[electronic resource] 260 $c2020 520 $aPontoscolex corethrurus is a well-known invasive earthworm in tropical zone which is believed to have originated from the Guayana Shield in South America and was described as parthenogenetic. A recent phylogenetic study revealed four cryptic species in the P. corethrurus complex (L1, L2, L3 and L4), among them L1 was particularly widespread and was proposed as P. corethrurus sensu stricto. Here, our aims were to investigate the genetic variation of P. corethrurus L1 in its presumed native and introduced ranges and to examine its reproductive strategy. An extensive dataset of 478 cytochrome oxidase I gene (COI) sequences, obtained in specimens sampled all around the world, revealed a weak COI haplotype diversity with one major haplotype (H1) present in 76% of the specimens. Analyses of the genetic variation of 12 L1 populations were done using both nuclear (226 AFLP profiles) and mitochondrial (269 COI sequences) genetic information. The high AFLP genotype diversity at the worldwide scale and the fact that no genotype was shared among populations, allowed to reject the ?super-clone? invasion hypothesis. Moreover, a similar level of mean genetic diversity indices were observed between the introduced and native ranges, a pattern explained by a history of multiple introductions of specimens from different parts of the world. At last, occurrence of identical AFLPs genotypes (i.e. clones) in several population confirmed asexual reproduction, but recombination was also revealed by gametic equilibrium analysis in some populations suggesting that P. corethrurus L1 may have a mixed reproductive strategy. 650 $aFounder effect 650 $aGenetic recombination 650 $aParthenogenesis 653 $aGenetic diversity 653 $aSoil macrofauna 653 $aTropical invasive species 700 1 $aDECAËNS, T. 700 1 $aCUNHA, L. 700 1 $aBROWN, G. G. 700 1 $aSILVA, E. da 700 1 $aBARTZ, M. L. C. 700 1 $aBARETTA, D. 700 1 $aDUPONT, L. 773 $tBiological Invasions$gv. 22, p. 2545-2557, 2020.
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