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Registro Completo |
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Biblioteca(s): |
Embrapa Hortaliças. |
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Data corrente: |
13/03/2012 |
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Data da última atualização: |
28/05/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
NASCIMENTO, W. M.; SILVA, P. P.; JUSTINO, E. V.; FREITAS, R. A. de. |
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Afiliação: |
WARLEY MARCOS NASCIMENTO, CNPH; RAQUEL ALVES DE FREITAS, SNTEEN T Mineiro. |
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Título: |
Physiological seed quality and stand establishment of hot pepper (Capsicum baccatum L. var. pendulum) under tropical conditions. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Acta Horticulturae, Wageningen, n. 898, p. 307-310, 2011. |
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Idioma: |
Inglês |
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Conteúdo: |
The hot pepper ?Dedo-De-Moça? (girl-finger) is one of the most consumed peppers in Brazil, mainly in the south and southeast regions. This hot pepper gives a mild pungency and is generally used as dried flakes or in sauce manufacturing. Farmers usually use their own seeds and establish the crops by transplanting. Thus, the seed quality, and hence stand establishment, are not always satisfactory due to compromised genetic purity, low seedling vigor and contamination of microorganisms. This paper describes seed technology to improve the physiological quality of hot pepper seeds in Brazil. ?Mari? hot-pepper fruits were harvested at different stages of maturation and seed were extracted from fruits by different methods. Seeds were also osmoconditioned and incubated for germination at different temperatures. Seeds of ?Mari? red hot pepper fruits had the best germination and vigor when harvested at approximately 60-70 days after anthesis. Seeds extracted mechanically provided better yield and better quality compared with those extracted manually. Osmoconditioning improved germination at high temperature (35°C). The results obtained in the different studies will be discussed. |
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Palavras-Chave: |
Análise fisiológica; Brasil; Capsucum baccatum pendulum. |
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Thesagro: |
Pimenta; Qualidade; Semente. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01897naa a2200229 a 4500
001 1918683
005 2024-05-28
008 2011 bl uuuu u00u1 u #d
100 1 $aNASCIMENTO, W. M.
245 $aPhysiological seed quality and stand establishment of hot pepper (Capsicum baccatum L. var. pendulum) under tropical conditions.$h[electronic resource]
260 $c2011
520 $aThe hot pepper ?Dedo-De-Moça? (girl-finger) is one of the most consumed peppers in Brazil, mainly in the south and southeast regions. This hot pepper gives a mild pungency and is generally used as dried flakes or in sauce manufacturing. Farmers usually use their own seeds and establish the crops by transplanting. Thus, the seed quality, and hence stand establishment, are not always satisfactory due to compromised genetic purity, low seedling vigor and contamination of microorganisms. This paper describes seed technology to improve the physiological quality of hot pepper seeds in Brazil. ?Mari? hot-pepper fruits were harvested at different stages of maturation and seed were extracted from fruits by different methods. Seeds were also osmoconditioned and incubated for germination at different temperatures. Seeds of ?Mari? red hot pepper fruits had the best germination and vigor when harvested at approximately 60-70 days after anthesis. Seeds extracted mechanically provided better yield and better quality compared with those extracted manually. Osmoconditioning improved germination at high temperature (35°C). The results obtained in the different studies will be discussed.
650 $aPimenta
650 $aQualidade
650 $aSemente
653 $aAnálise fisiológica
653 $aBrasil
653 $aCapsucum baccatum pendulum
700 1 $aSILVA, P. P.
700 1 $aJUSTINO, E. V.
700 1 $aFREITAS, R. A. de
773 $tActa Horticulturae, Wageningen$gn. 898, p. 307-310, 2011.
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Registro original: |
Embrapa Hortaliças (CNPH) |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
07/12/2015 |
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Data da última atualização: |
02/08/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 4 |
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Autoria: |
CARVALHO, J. de F. C.; CRUSIOL, L. G. T.; PERINI, L. J.; SIBALDELLI, R. N. R.; FERREIRA. L. C.; MARCELINO-GUIMARÃES, F. C.; NEPOMUCENO, A. L.; NEUMAIER, N.; FARIAS, J. R. B. |
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Afiliação: |
JOSIRLEY DE FÁTIMA CORRÊA CARVALHO, Pós-graduanda; LUIS GUILHERME TEIXEIRA CRUSIOL, Embrapa Soja; LUIZ JUNIOR PERINI, Embrapa Soja; RUBSON NATAL RIBEIRO SIBALDELLI, UTFPR; LEONARDO CESAR FERREIRA, Embrapa Soja; FRANCISMAR CORREA MARCELINO GUIMARA, CNPSO; ALEXANDRE LIMA NEPOMUCENO, SRI; NORMAN NEUMAIER, CNPSO; JOSE RENATO BOUCAS FARIAS, CNPSO. |
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Título: |
Phenotyping soybeans for drought responses using remote sensing techniques and non-destructive physiological analysis. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Global Science and Technology, v. 8, n. 2, p. 1-16, maio/ago. 2015. |
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ISSN: |
1984-3801 |
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DOI: |
10.14688/1984-3801/gst.v8n2p1-16 |
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Idioma: |
Inglês |
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Conteúdo: |
ABSTRACT: Water deficit is the major abiotic factor that limits crop productivity. Climate changes are likely to exacerbate drought stresses in the future. In the present work, we investigated the feasibility of using the Normalized Difference Vegetation Index (NDVI) combined with the canopy tempera ture and other physiological characteristics, such as chlorophyll content and gas exchange, to monitor soybean (Glycine max L. Merrill) plants differing in their drought response under glasshouse conditions. Additionally, the drought responses of the cultivars Embrapa 48 and BR 16 were assessed under conditions of natural drought, water deficit simulated by sheltering the plants from rain at the vegetative and reproductive periods and irrigation at field conditions. Remote sensing techniques could be used to initially assess the drought responses of soybean plants under controlled conditions. Additionally, we observed the relationship between the NDVI and several physiological characteristics, such as chlorophyll content, photosynthesis, stomatal conductance and transpiration. Therefore, the combination between remote sensing techniques and the assessment of physiological traits of plant materials at the same developmental stage and leaf areas is useful to accurately monitor cultivars presenting different drought responses. RESUMO: O déficit hídrico é o maior fator abiótico que limita a produtividade das culturas. As mudanças climáticas provavelmente agravarão os estresses hídricos no futuro. No presente trabalho, nós investigamos a viabilidade de uso do Índice de Vegetação por Diferença Normalizada (NDVI) combinado à temperatura do dossel e a outras características fisiológicas, tais como teor de clorofila e trocas gasosas, para monitorar plantas de soja (Glycine max L. Merrill) com respostas diferenciais à seca, sob condições de casa de vegetação. Adicionalmente, as respostas à seca das cultivares Embrapa 48 e BR 16 foram avaliadas sob condições de seca natural, déficit hídrico simulado abrigando - se as plantas da chuva nos períodos vegetativo e reprodutivo e irrigação sob condições de campo. Tecnologias de sensoriamento remoto puderam ser usadas para inicialmente avaliar as respostas à seca de plantas de soja sob condições controladas. Além disso, nós observamos a relação entre o NDVI e diversas características fisiológicas, tais como teor de clorofila, fotossíntese, condutância estomática e transpiração. Portanto, a combinação entre técnicas de sensoriamento remoto e a avaliação de características fisiológicas e materiais vegetais no mesmo estádio de desenvolvimento e áreas foliares é útil para monitorar precisamente cultivares apresentando diferentes respostas à seca. MenosABSTRACT: Water deficit is the major abiotic factor that limits crop productivity. Climate changes are likely to exacerbate drought stresses in the future. In the present work, we investigated the feasibility of using the Normalized Difference Vegetation Index (NDVI) combined with the canopy tempera ture and other physiological characteristics, such as chlorophyll content and gas exchange, to monitor soybean (Glycine max L. Merrill) plants differing in their drought response under glasshouse conditions. Additionally, the drought responses of the cultivars Embrapa 48 and BR 16 were assessed under conditions of natural drought, water deficit simulated by sheltering the plants from rain at the vegetative and reproductive periods and irrigation at field conditions. Remote sensing techniques could be used to initially assess the drought responses of soybean plants under controlled conditions. Additionally, we observed the relationship between the NDVI and several physiological characteristics, such as chlorophyll content, photosynthesis, stomatal conductance and transpiration. Therefore, the combination between remote sensing techniques and the assessment of physiological traits of plant materials at the same developmental stage and leaf areas is useful to accurately monitor cultivars presenting different drought responses. RESUMO: O déficit hídrico é o maior fator abiótico que limita a produtividade das culturas. As mudanças climáticas provavelmente agravarão os estresses hídric... Mostrar Tudo |
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Thesagro: |
Deficiência hídrica; Soja. |
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Thesaurus NAL: |
Plant-water relations; Soybeans. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/134964/1/v08n02a01.pdf
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Marc: |
LEADER 03689naa a2200289 a 4500
001 2030764
005 2017-08-02
008 2015 bl uuuu u00u1 u #d
022 $a1984-3801
024 7 $a10.14688/1984-3801/gst.v8n2p1-16$2DOI
100 1 $aCARVALHO, J. de F. C.
245 $aPhenotyping soybeans for drought responses using remote sensing techniques and non-destructive physiological analysis.$h[electronic resource]
260 $c2015
520 $aABSTRACT: Water deficit is the major abiotic factor that limits crop productivity. Climate changes are likely to exacerbate drought stresses in the future. In the present work, we investigated the feasibility of using the Normalized Difference Vegetation Index (NDVI) combined with the canopy tempera ture and other physiological characteristics, such as chlorophyll content and gas exchange, to monitor soybean (Glycine max L. Merrill) plants differing in their drought response under glasshouse conditions. Additionally, the drought responses of the cultivars Embrapa 48 and BR 16 were assessed under conditions of natural drought, water deficit simulated by sheltering the plants from rain at the vegetative and reproductive periods and irrigation at field conditions. Remote sensing techniques could be used to initially assess the drought responses of soybean plants under controlled conditions. Additionally, we observed the relationship between the NDVI and several physiological characteristics, such as chlorophyll content, photosynthesis, stomatal conductance and transpiration. Therefore, the combination between remote sensing techniques and the assessment of physiological traits of plant materials at the same developmental stage and leaf areas is useful to accurately monitor cultivars presenting different drought responses. RESUMO: O déficit hídrico é o maior fator abiótico que limita a produtividade das culturas. As mudanças climáticas provavelmente agravarão os estresses hídricos no futuro. No presente trabalho, nós investigamos a viabilidade de uso do Índice de Vegetação por Diferença Normalizada (NDVI) combinado à temperatura do dossel e a outras características fisiológicas, tais como teor de clorofila e trocas gasosas, para monitorar plantas de soja (Glycine max L. Merrill) com respostas diferenciais à seca, sob condições de casa de vegetação. Adicionalmente, as respostas à seca das cultivares Embrapa 48 e BR 16 foram avaliadas sob condições de seca natural, déficit hídrico simulado abrigando - se as plantas da chuva nos períodos vegetativo e reprodutivo e irrigação sob condições de campo. Tecnologias de sensoriamento remoto puderam ser usadas para inicialmente avaliar as respostas à seca de plantas de soja sob condições controladas. Além disso, nós observamos a relação entre o NDVI e diversas características fisiológicas, tais como teor de clorofila, fotossíntese, condutância estomática e transpiração. Portanto, a combinação entre técnicas de sensoriamento remoto e a avaliação de características fisiológicas e materiais vegetais no mesmo estádio de desenvolvimento e áreas foliares é útil para monitorar precisamente cultivares apresentando diferentes respostas à seca.
650 $aPlant-water relations
650 $aSoybeans
650 $aDeficiência hídrica
650 $aSoja
700 1 $aCRUSIOL, L. G. T.
700 1 $aPERINI, L. J.
700 1 $aSIBALDELLI, R. N. R.
700 1 $aFERREIRA. L. C.
700 1 $aMARCELINO-GUIMARÃES, F. C.
700 1 $aNEPOMUCENO, A. L.
700 1 $aNEUMAIER, N.
700 1 $aFARIAS, J. R. B.
773 $tGlobal Science and Technology$gv. 8, n. 2, p. 1-16, maio/ago. 2015.
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Embrapa Soja (CNPSO) |
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