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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
20/08/1997 |
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Data da última atualização: |
20/08/1997 |
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Autoria: |
FUKUDA, W. M. G.; CAVALCANTI, J.; OLIVEIRA, S. L. de; DALALIBERA JUNIOR, I.; IGLESIAS, C.; CALDAS, R. C. |
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Afiliação: |
EMBRAPA/CNPMF. |
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Título: |
Efeito do estresse hidrico e do acaro verde (Mononychellus tanajoa) sobre variedades de mandioca sob condicoes semi-aridas |
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Ano de publicação: |
1996 |
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Fonte/Imprenta: |
Sao Pedro, SP: Centro de Raizes Tropicais/UNESP/SBM, 1996. |
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Páginas: |
1p. |
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Idioma: |
Português |
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Notas: |
In: CONGRESSO LATINO AMERICANO DE RAIZES TROPICAIS, 1, E CONGRESSO BRASILEIRO DE MANDIOCA, 9, 1996, Sao Pedro, SP. Programa e Resumos... |
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Conteúdo: |
Este trabalho teve por objetivo identificar os efeitos dos acaros e do estresse hidrico e a interacao dos dois fatores com diferentes variedades de mandioca sob condicoes semi-aridas. Foi desenvolvido na sede da Estacao Experimental de Bebedouro, do centro de Pesquisa Agropecuaria para Tropico Semi-Arido (CPATSA), em Petrolina-PE, no ano de 1994. Utilizou-se o delineamento experimental de blocos ao acaso com tres repeticoes em esquema fatorial. Os tratamentos consistiram de tres variedades de mandioca (Engana Ladrao, Macaxeira Preta e Do Ceu), plantas com e sem irrigacao, com e sem controle quimico de acaros. Cada parcela constou de 48 plantas totais e 24 uteis. O espacamento entre plantas foi de 1,00m x 1,00m e entre parcelas de 4,00m. Foram feitas avaliacoesde acaros quinzenalmente utilizando-se uma escala de notas de 1-5. Na colheita foram tomados dados de pesos de raiz e da parte aerea, altura de planta, teor de materia seca e HCN nas raizes. Observaram-se efeitos independentes de variedades, estresse hidrico e de acaros sobre os principais fatores de producao de mandioca. Os acaros e o estresse hidrico apresentaram efeitos negativos sobre a produtividade da mandioca no semi-arido. O estresse hidrico exerceu a maior influencia sobre a produtividade e qualidade das raizes das tres variedades de mandioca, quando comparada ao efeito dos acaros verdes. |
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Categoria do assunto: |
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Marc: |
LEADER 02117naa a2200205 a 4500
001 1645013
005 1997-08-20
008 1996 bl uuuu u00u1 u #d
100 1 $aFUKUDA, W. M. G.
245 $aEfeito do estresse hidrico e do acaro verde (Mononychellus tanajoa) sobre variedades de mandioca sob condicoes semi-aridas
260 $c1996
300 $a1p.
500 $aIn: CONGRESSO LATINO AMERICANO DE RAIZES TROPICAIS, 1, E CONGRESSO BRASILEIRO DE MANDIOCA, 9, 1996, Sao Pedro, SP. Programa e Resumos...
520 $aEste trabalho teve por objetivo identificar os efeitos dos acaros e do estresse hidrico e a interacao dos dois fatores com diferentes variedades de mandioca sob condicoes semi-aridas. Foi desenvolvido na sede da Estacao Experimental de Bebedouro, do centro de Pesquisa Agropecuaria para Tropico Semi-Arido (CPATSA), em Petrolina-PE, no ano de 1994. Utilizou-se o delineamento experimental de blocos ao acaso com tres repeticoes em esquema fatorial. Os tratamentos consistiram de tres variedades de mandioca (Engana Ladrao, Macaxeira Preta e Do Ceu), plantas com e sem irrigacao, com e sem controle quimico de acaros. Cada parcela constou de 48 plantas totais e 24 uteis. O espacamento entre plantas foi de 1,00m x 1,00m e entre parcelas de 4,00m. Foram feitas avaliacoesde acaros quinzenalmente utilizando-se uma escala de notas de 1-5. Na colheita foram tomados dados de pesos de raiz e da parte aerea, altura de planta, teor de materia seca e HCN nas raizes. Observaram-se efeitos independentes de variedades, estresse hidrico e de acaros sobre os principais fatores de producao de mandioca. Os acaros e o estresse hidrico apresentaram efeitos negativos sobre a produtividade da mandioca no semi-arido. O estresse hidrico exerceu a maior influencia sobre a produtividade e qualidade das raizes das tres variedades de mandioca, quando comparada ao efeito dos acaros verdes.
700 1 $aCAVALCANTI, J.
700 1 $aOLIVEIRA, S. L. de
700 1 $aDALALIBERA JUNIOR, I.
700 1 $aIGLESIAS, C.
700 1 $aCALDAS, R. C.
773 $tSao Pedro, SP: Centro de Raizes Tropicais/UNESP/SBM, 1996.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Soja. Para informações adicionais entre em contato com valeria.cardoso@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
06/04/2004 |
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Data da última atualização: |
27/07/2007 |
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Autoria: |
STOLF, R.; MEDRI, M. E.; BROGIN, R. L.; MOLINA, J. C.; SILVEIRA, C. A. da; MARIN, S. R. R.; BINNECK, E.; LEMOS, N. G.; PIOTTO, E. C. S.; DIAS, J.; NEUMAIER, N.; NEPOMUCENO, A. L. |
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Título: |
Tolerance to drought in Glycine max (L.) Merril: ecophysiological aspects. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
In: WORLD SOYBEAN RESEARCH CONFERENCE, 7.; INTERNATIONAL SOYBEAN PROCESSING AND UTILIZATION CONFERENCE, 4.; CONGRESSO BRASILEIRO DE SOJA, 3., 2004, Foz do Iguassu. Abstracts of contributed papers and posters. Londrina: Embrapa Soybean, 2004. |
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Páginas: |
p. 185. |
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Série: |
(Embrapa Soja. Documentos, 228). |
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Idioma: |
Inglês |
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Notas: |
Editado por Flávio Moscardi, Clara Beatriz Hoffmann-Campo, Odilon Ferreira Saraiva, Paulo Roberto Galerani, Francisco Carlos Krzyzanowski, Mercedes Concordia Carrão-Panizzi. |
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Conteúdo: |
One of the main causes on the variation in soybean yields, has been the stress events, caused by climatic adversities such as drought. The aim of this work was to evaluate physiological and morpho-anatomical strategies of two soybean cultivars, Conquista (MGBR-46) and BR-16, tolerant and susceptible to drought, respectively, during two periods of water deficit: 30 and 45 days. The experiment was performed in greenhouse, in a completely randomized design (CRD), in PVC pots with sand, considering the treatments with gravimetric humidity of 15% (field capacity) and 5% (moderate stress). Measurements were made on leaf area, plant height, relative growth rate (RGR), photosynthesis and stomatal conductance. As results, it was observed that the photosynthesis was significantly reduced with 45 days of stress, and the tolerant cultivar presented smaller values of photosynthetic rate. Data on stomatal conductance showed that values weren't significantly different. It was also observed a small reduction in the leaf area between the cultivars in the period of 45 days of treatment. During water stress period, leaf abscission had occurred, which could have contributed to the reduction in leaf area, as well as the reduction in the photosynthetic rate. The relative growth rate, which express the plant growth as a function of dry mass accumulation versus time, presented a significant reduction in the 30 days treatment. Fifteen days after this period, which means 45 days of treatment, the plants of the drought susceptible cultivar in stressed condition, showed loss of dry mass. This result also showed that, during the 30 days treatment plants showed some stress which increased with time. Considering the dry mass of pods, it was observed a significant reduction in the cultivar BR-16 when compared to Conquista and, also, inside each cultivar in the different treatments. It shows that this reduction in total dry mass could be affecting the yield of these cultivars. The anatomical study, using permanent slides of leaf and root was done using the method of paraffin inclusion. Quantitative analysis were performed on palisade and spongy parenchyma and intercellular space. Next, it will be doing molecular studies to understand the soybean tolerance strategies to drought, for example how genes are differentially expressed during this period. MenosOne of the main causes on the variation in soybean yields, has been the stress events, caused by climatic adversities such as drought. The aim of this work was to evaluate physiological and morpho-anatomical strategies of two soybean cultivars, Conquista (MGBR-46) and BR-16, tolerant and susceptible to drought, respectively, during two periods of water deficit: 30 and 45 days. The experiment was performed in greenhouse, in a completely randomized design (CRD), in PVC pots with sand, considering the treatments with gravimetric humidity of 15% (field capacity) and 5% (moderate stress). Measurements were made on leaf area, plant height, relative growth rate (RGR), photosynthesis and stomatal conductance. As results, it was observed that the photosynthesis was significantly reduced with 45 days of stress, and the tolerant cultivar presented smaller values of photosynthetic rate. Data on stomatal conductance showed that values weren't significantly different. It was also observed a small reduction in the leaf area between the cultivars in the period of 45 days of treatment. During water stress period, leaf abscission had occurred, which could have contributed to the reduction in leaf area, as well as the reduction in the photosynthetic rate. The relative growth rate, which express the plant growth as a function of dry mass accumulation versus time, presented a significant reduction in the 30 days treatment. Fifteen days after this period, which means 45 days of treatment, the pla... Mostrar Tudo |
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Categoria do assunto: |
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Marc: |
LEADER 03490naa a2200289 a 4500
001 1466794
005 2007-07-27
008 2004 bl uuuu u00u1 u #d
100 1 $aSTOLF, R.
245 $aTolerance to drought in Glycine max (L.) Merril$becophysiological aspects.
260 $c2004
300 $ap. 185.
490 $a(Embrapa Soja. Documentos, 228).
500 $aEditado por Flávio Moscardi, Clara Beatriz Hoffmann-Campo, Odilon Ferreira Saraiva, Paulo Roberto Galerani, Francisco Carlos Krzyzanowski, Mercedes Concordia Carrão-Panizzi.
520 $aOne of the main causes on the variation in soybean yields, has been the stress events, caused by climatic adversities such as drought. The aim of this work was to evaluate physiological and morpho-anatomical strategies of two soybean cultivars, Conquista (MGBR-46) and BR-16, tolerant and susceptible to drought, respectively, during two periods of water deficit: 30 and 45 days. The experiment was performed in greenhouse, in a completely randomized design (CRD), in PVC pots with sand, considering the treatments with gravimetric humidity of 15% (field capacity) and 5% (moderate stress). Measurements were made on leaf area, plant height, relative growth rate (RGR), photosynthesis and stomatal conductance. As results, it was observed that the photosynthesis was significantly reduced with 45 days of stress, and the tolerant cultivar presented smaller values of photosynthetic rate. Data on stomatal conductance showed that values weren't significantly different. It was also observed a small reduction in the leaf area between the cultivars in the period of 45 days of treatment. During water stress period, leaf abscission had occurred, which could have contributed to the reduction in leaf area, as well as the reduction in the photosynthetic rate. The relative growth rate, which express the plant growth as a function of dry mass accumulation versus time, presented a significant reduction in the 30 days treatment. Fifteen days after this period, which means 45 days of treatment, the plants of the drought susceptible cultivar in stressed condition, showed loss of dry mass. This result also showed that, during the 30 days treatment plants showed some stress which increased with time. Considering the dry mass of pods, it was observed a significant reduction in the cultivar BR-16 when compared to Conquista and, also, inside each cultivar in the different treatments. It shows that this reduction in total dry mass could be affecting the yield of these cultivars. The anatomical study, using permanent slides of leaf and root was done using the method of paraffin inclusion. Quantitative analysis were performed on palisade and spongy parenchyma and intercellular space. Next, it will be doing molecular studies to understand the soybean tolerance strategies to drought, for example how genes are differentially expressed during this period.
700 1 $aMEDRI, M. E.
700 1 $aBROGIN, R. L.
700 1 $aMOLINA, J. C.
700 1 $aSILVEIRA, C. A. da
700 1 $aMARIN, S. R. R.
700 1 $aBINNECK, E.
700 1 $aLEMOS, N. G.
700 1 $aPIOTTO, E. C. S.
700 1 $aDIAS, J.
700 1 $aNEUMAIER, N.
700 1 $aNEPOMUCENO, A. L.
773 $tIn: WORLD SOYBEAN RESEARCH CONFERENCE, 7.; INTERNATIONAL SOYBEAN PROCESSING AND UTILIZATION CONFERENCE, 4.; CONGRESSO BRASILEIRO DE SOJA, 3., 2004, Foz do Iguassu. Abstracts of contributed papers and posters. Londrina: Embrapa Soybean, 2004.
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