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Registro Completo |
Biblioteca(s): |
Embrapa Algodão. |
Data corrente: |
03/01/2018 |
Data da última atualização: |
03/01/2018 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
COSTA, J. C. F. da; SILVA, D. J. da; SOUTO, A. G. de L.; SOFIATTI, V.; ROSADO, L. D. S.; LIMA NETO, A. J. de; SANTOS, C. E. M. dos. |
Afiliação: |
JUSSARA CRISTINA FIRMINO da COSTA, UFV; DEMETRIUS JOSÉ da SILVA, UFPB; ANTÔNIO GUSTAVO de LUNA SOUTO, UFV; VALDINEI SOFIATTI, CNPA; LUCIANA DOMICIANO SILVA ROSADO, UFV; ANTONIO JOÃO de LIMA NETO, UFV; CARLOS EDUARDO MAGALHÃES dos SANTOS, UFV. |
Título: |
Physiological aspects in cotton cultivars in response to application leaf gibberellic acid. |
Ano de publicação: |
2017 |
Fonte/Imprenta: |
African Journal of Agricultural Research, v.12, n. 4, p. 270-278, Jan. 2017. |
ISSN: |
1991-637X |
DOI: |
10.5897/AJAR2016.11663 |
Idioma: |
Inglês |
Conteúdo: |
The cotton plant is a species of the Malvaceae family and is relevant to the Brazilian and world economy, mainly because of the textile fiber. However, there was an increase in cotton production because it is necessary for the use of inputs or stimulants, such as the use of gibberellic acid, which has contributed in improving the physiological processes of plants. The study aimed to evaluate the effects of gibberellic acid doses and foliar application on the physiological aspects of different cotton cultivars. The experiment was conducted under field conditions in 5 × 3 factorial scheme, corresponding to five doses of gibberellic acid (0, 0.01, 0.02, 0.04 and 0.06 mg L-1) and three cultivars upland cotton (BRS 8H, BRS Rubi and BRS Safira) in the design of randomized blocks, three replications and 25 plants per plot. The photosynthetic pigments, which are represented by the contents of chlorophyll a and b, total, carotenoid and relative water content in the sheet were determined. In BRS 8H the chlorophyll levels were high, 287.914 ?mol m-2 to 468.796 ?mol m-2 being the treatments without and sprayed with 0.06 mg L-1 GA3, with 62.82% increase. The application of 0.06 mg L-1 GA3 generally promotes increased levels of photosynthetic pigments and relative water content in cotton leaves. The cotton BRS 8H was the culture that best meets the application of gibberellic acid. |
Palavras-Chave: |
Pigmentos fotossintéticos. |
Thesagro: |
Ácido giberélico; Algodão; Carotenóide; Clorofila; Gossypium hirsutum. |
Thesaurus Nal: |
Carotenoids; Chlorophyll; Cotton; Gibberellic acid; Pigments. |
Categoria do assunto: |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/170248/1/Physiological-aspects-....pdf
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Marc: |
LEADER 02411naa a2200349 a 4500 001 2084140 005 2018-01-03 008 2017 bl uuuu u00u1 u #d 022 $a1991-637X 024 7 $a10.5897/AJAR2016.11663$2DOI 100 1 $aCOSTA, J. C. F. da 245 $aPhysiological aspects in cotton cultivars in response to application leaf gibberellic acid.$h[electronic resource] 260 $c2017 520 $aThe cotton plant is a species of the Malvaceae family and is relevant to the Brazilian and world economy, mainly because of the textile fiber. However, there was an increase in cotton production because it is necessary for the use of inputs or stimulants, such as the use of gibberellic acid, which has contributed in improving the physiological processes of plants. The study aimed to evaluate the effects of gibberellic acid doses and foliar application on the physiological aspects of different cotton cultivars. The experiment was conducted under field conditions in 5 × 3 factorial scheme, corresponding to five doses of gibberellic acid (0, 0.01, 0.02, 0.04 and 0.06 mg L-1) and three cultivars upland cotton (BRS 8H, BRS Rubi and BRS Safira) in the design of randomized blocks, three replications and 25 plants per plot. The photosynthetic pigments, which are represented by the contents of chlorophyll a and b, total, carotenoid and relative water content in the sheet were determined. In BRS 8H the chlorophyll levels were high, 287.914 ?mol m-2 to 468.796 ?mol m-2 being the treatments without and sprayed with 0.06 mg L-1 GA3, with 62.82% increase. The application of 0.06 mg L-1 GA3 generally promotes increased levels of photosynthetic pigments and relative water content in cotton leaves. The cotton BRS 8H was the culture that best meets the application of gibberellic acid. 650 $aCarotenoids 650 $aChlorophyll 650 $aCotton 650 $aGibberellic acid 650 $aPigments 650 $aÁcido giberélico 650 $aAlgodão 650 $aCarotenóide 650 $aClorofila 650 $aGossypium hirsutum 653 $aPigmentos fotossintéticos 700 1 $aSILVA, D. J. da 700 1 $aSOUTO, A. G. de L. 700 1 $aSOFIATTI, V. 700 1 $aROSADO, L. D. S. 700 1 $aLIMA NETO, A. J. de 700 1 $aSANTOS, C. E. M. dos 773 $tAfrican Journal of Agricultural Research$gv.12, n. 4, p. 270-278, Jan. 2017.
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Embrapa Algodão (CNPA) |
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Registro Completo
Biblioteca(s): |
Embrapa Florestas. |
Data corrente: |
18/09/2008 |
Data da última atualização: |
18/09/2008 |
Autoria: |
JANA, U.; REPELLIN, A.; BAROT, S.; BLOUIN, M.; LAVELLE, P.; ZUILY-FODIL, Y. |
Título: |
Earthworm impact on the model plant Arabidopsis thaliana plasticity. |
Ano de publicação: |
2008 |
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. |
Idioma: |
Inglês |
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 |
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.
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