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Registro Completo |
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
16/01/2008 |
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Data da última atualização: |
16/07/2018 |
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Autoria: |
GOMES, C. N.; CARVALHO, S. P. de; JESUS, A. M. S.; CUSTÓDIO, T. N. |
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Afiliação: |
Carlos Nick Gomes, Universidade Federal de Lavras - UFLA/Departamento de Agricultura; Samuel Pereira de Carvalho, Universidade Federal de Lavras - UFLA/Departamento de Agricultura; Adriana Madeira Santos Jesus, Universidade Federal de Lavras - UFLA/Departamento de Agricultura; Telde Natel Custódio, Universidade Federal de Lavras - UFLA/Departamento de Agricultura. |
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Título: |
Caracterização morfoagronômica e coeficientes de trilha de caracteres componentes da produção em mandioca |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 42, n. 8, p. 1121-1130, ago. 2007 |
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Idioma: |
Português |
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Notas: |
Título em inglês: Morphoagronomic characterization and path analysis of production components in cassava clones. |
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Conteúdo: |
Os objetivos deste trabalho foram caracterizar agronomicamente cem clones de mandioca (Manihot esculenta Crantz) e calcular os coeficientes de trilha entre a produção de raízes tuberosas e cinco componentes da produção, de modo a auxiliar na seleção de clones superiores. O experimento foi conduzido em área experimental da Universidade Federal de Lavras, em 2005 e 2006. Cem clones de mandioca foram avaliados em delineamento látice quadrado 10x10. A unidade experimental foi constituída por quatro plantas espaçadas de 1,0x0,6 m. As análises estatísticas foram realizadas considerando-se as oito características individualmente, utilizando-se o teste de Scott-Knott para agrupamento das médias. Os clones 87 e 88 mostraram-se promissores tanto para serem utilizados em cruzamentos quanto para fixação como novas cultivares em virtude do excelente desempenho nas características comprimento, número e produção de raízes tuberosas por planta. A análise de trilha mostrou que o número de raízes por planta e o peso total da parte aérea podem ser utilizados como critérios na seleção indireta para produção de raízes tuberosas em mandioca. |
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Palavras-Chave: |
análise de trilha; indirect selection; path analysis; produção de raízes tuberosas; seleção indireta; storage root production. |
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Thesagro: |
Manihot Esculenta. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/106849/1/Caracterizacao.pdf
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Marc: |
LEADER 02076naa a2200253 a 4500
001 1122786
005 2018-07-16
008 2007 bl uuuu u00u1 u #d
100 1 $aGOMES, C. N.
245 $aCaracterização morfoagronômica e coeficientes de trilha de caracteres componentes da produção em mandioca
260 $c2007
500 $aTítulo em inglês: Morphoagronomic characterization and path analysis of production components in cassava clones.
520 $aOs objetivos deste trabalho foram caracterizar agronomicamente cem clones de mandioca (Manihot esculenta Crantz) e calcular os coeficientes de trilha entre a produção de raízes tuberosas e cinco componentes da produção, de modo a auxiliar na seleção de clones superiores. O experimento foi conduzido em área experimental da Universidade Federal de Lavras, em 2005 e 2006. Cem clones de mandioca foram avaliados em delineamento látice quadrado 10x10. A unidade experimental foi constituída por quatro plantas espaçadas de 1,0x0,6 m. As análises estatísticas foram realizadas considerando-se as oito características individualmente, utilizando-se o teste de Scott-Knott para agrupamento das médias. Os clones 87 e 88 mostraram-se promissores tanto para serem utilizados em cruzamentos quanto para fixação como novas cultivares em virtude do excelente desempenho nas características comprimento, número e produção de raízes tuberosas por planta. A análise de trilha mostrou que o número de raízes por planta e o peso total da parte aérea podem ser utilizados como critérios na seleção indireta para produção de raízes tuberosas em mandioca.
650 $aManihot Esculenta
653 $aanálise de trilha
653 $aindirect selection
653 $apath analysis
653 $aprodução de raízes tuberosas
653 $aseleção indireta
653 $astorage root production
700 1 $aCARVALHO, S. P. de
700 1 $aJESUS, A. M. S.
700 1 $aCUSTÓDIO, T. N.
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 42, n. 8, p. 1121-1130, ago. 2007
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Registro original: |
Embrapa Unidades Centrais (AI-SEDE) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
18/09/2008 |
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Data da última atualização: |
18/09/2008 |
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Autoria: |
JANA, U.; REPELLIN, A.; BAROT, S.; BLOUIN, M.; LAVELLE, P.; ZUILY-FODIL, Y. |
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Título: |
Earthworm impact on the model plant Arabidopsis thaliana plasticity. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
In: INTERNATIONAL COLLOQUIUM ON SOIL ZOOLOGY, 15; INTERNATIONAL COLLOQUIUM ON APTERYGOTA, 12., 2008, Curitiba. Biodiversity, conservation and sustainabele management of soil animal: abstracts. Colombo: Embrapa Florestas. Editors: George Gardner Brown; Klaus Dieter Sautter; Renato Marques; Amarildo Pasini. 1 CD-ROM. |
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Idioma: |
Inglês |
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Conteúdo: |
Plants exhibit phenotypic plasticity in response to changes in their environment, such as soil
composition, presence of pathogens or soil engineers like earthworms. Worms are known to
improve plant growth. However, the extent of worm effects depends on plant species, worm and
soil types. To date, plant plasticity in response of earthworms has essentially been assessed
through measurements of biomass production.
In the present work, we propose a new approach to study earthworm effects on plant plasticity in
which plant phenotypic variations are correlated with variations in the expression levels of several
genes involved in cellular division and responses to stress. To do so, an original experimental
setup was designed in which as many parameters as possible were tightly controlled. Individual
Arabidopsis thaliana plants were grown with (or without) Aporrectodea caliginosa earthworms
in two types of soil, a rich one or a poor soil almost free of organic matter and nitrogen.
In the poor soil, plant phenotype was typical of nitrogen-starved plants, with a reduced aerial
biomass production and an over-developed root system. However, earthworms restored
vegetative and reproductive biomass production to the levels observed in the rich soil. In leaves,
this seemed to correspond to increased cell divisions and enhanced defence against reactive
oxygen species. Regardless of soil quality, worms significantly decreased length and biomass
of the root systems, suggesting an improvement of plant mineral uptake. This hypothesis was
confirmed by plant C:N analyses that revealed general N enrichment in all plants. Furthermore,
worms decreased ammonium contents in both soils whereas they strongly increased nitrogen
content in the poor soil.
These experiments clearly showed effects of worms on soil mineral status and on nutrient uptake
in plants leading to better resource allocation MenosPlants exhibit phenotypic plasticity in response to changes in their environment, such as soil
composition, presence of pathogens or soil engineers like earthworms. Worms are known to
improve plant growth. However, the extent of worm effects depends on plant species, worm and
soil types. To date, plant plasticity in response of earthworms has essentially been assessed
through measurements of biomass production.
In the present work, we propose a new approach to study earthworm effects on plant plasticity in
which plant phenotypic variations are correlated with variations in the expression levels of several
genes involved in cellular division and responses to stress. To do so, an original experimental
setup was designed in which as many parameters as possible were tightly controlled. Individual
Arabidopsis thaliana plants were grown with (or without) Aporrectodea caliginosa earthworms
in two types of soil, a rich one or a poor soil almost free of organic matter and nitrogen.
In the poor soil, plant phenotype was typical of nitrogen-starved plants, with a reduced aerial
biomass production and an over-developed root system. However, earthworms restored
vegetative and reproductive biomass production to the levels observed in the rich soil. In leaves,
this seemed to correspond to increased cell divisions and enhanced defence against reactive
oxygen species. Regardless of soil quality, worms significantly decreased length and biomass
of the root systems, suggesting an improvement o... Mostrar Tudo |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02641naa a2200181 a 4500
001 1314858
005 2008-09-18
008 2008 bl uuuu u00u1 u #d
100 1 $aJANA, U.
245 $aEarthworm impact on the model plant Arabidopsis thaliana plasticity.
260 $c2008
520 $aPlants exhibit phenotypic plasticity in response to changes in their environment, such as soil composition, presence of pathogens or soil engineers like earthworms. Worms are known to improve plant growth. However, the extent of worm effects depends on plant species, worm and soil types. To date, plant plasticity in response of earthworms has essentially been assessed through measurements of biomass production. In the present work, we propose a new approach to study earthworm effects on plant plasticity in which plant phenotypic variations are correlated with variations in the expression levels of several genes involved in cellular division and responses to stress. To do so, an original experimental setup was designed in which as many parameters as possible were tightly controlled. Individual Arabidopsis thaliana plants were grown with (or without) Aporrectodea caliginosa earthworms in two types of soil, a rich one or a poor soil almost free of organic matter and nitrogen. In the poor soil, plant phenotype was typical of nitrogen-starved plants, with a reduced aerial biomass production and an over-developed root system. However, earthworms restored vegetative and reproductive biomass production to the levels observed in the rich soil. In leaves, this seemed to correspond to increased cell divisions and enhanced defence against reactive oxygen species. Regardless of soil quality, worms significantly decreased length and biomass of the root systems, suggesting an improvement of plant mineral uptake. This hypothesis was confirmed by plant C:N analyses that revealed general N enrichment in all plants. Furthermore, worms decreased ammonium contents in both soils whereas they strongly increased nitrogen content in the poor soil. These experiments clearly showed effects of worms on soil mineral status and on nutrient uptake in plants leading to better resource allocation
700 1 $aREPELLIN, A.
700 1 $aBAROT, S.
700 1 $aBLOUIN, M.
700 1 $aLAVELLE, P.
700 1 $aZUILY-FODIL, Y.
773 $tIn: INTERNATIONAL COLLOQUIUM ON SOIL ZOOLOGY, 15; INTERNATIONAL COLLOQUIUM ON APTERYGOTA, 12., 2008, Curitiba. Biodiversity, conservation and sustainabele management of soil animal: abstracts. Colombo: Embrapa Florestas. Editors: George Gardner Brown; Klaus Dieter Sautter; Renato Marques; Amarildo Pasini. 1 CD-ROM.
Download
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