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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
01/10/1992 |
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Data da última atualização: |
28/10/2004 |
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Autoria: |
HERNANDEZ, L. F.; ORIOLO, G. A. |
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Afiliação: |
Departamento de Agronomia-CERZOS. Universidad Nacional del Sur, 8000 Bahia Blanca, Argentina. |
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Título: |
Variaciones edaficas en suelos bajo riego y su influencia en el crecimiento y rendimento del girasol. |
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Ano de publicação: |
1985 |
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Fonte/Imprenta: |
In: CONFERENCIA INTERNACIONAL DE GIRASOL, 11., 1985. Mar del Plata. Actas. Mar del Plata: ASAGIR/ISA, 1985, t.1, p.227-233. |
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Idioma: |
Espanhol |
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Conteúdo: |
Los componentes del rendimiento de girasol (cvs. Dekalb G-90 y Dekalb G-97) fueron evaluados en relacion a variaciones en la fertilidad, contenido de sodio del suelo y en la penetrabilidad radicular como producto de la sistematizacion. Los experimentos se realizaron bajo riego en el valle inferior del Rio Colorado, sur de la Provincia de Buenos Aires (lat. 39o 31' S.; long. 62o 38' W.). Los efectos del contenido de sodio en el suelo sobre el cultivo fueron un retraso en la germinacion y emergencia de las plantulas y una disminucion en la altura de las plantas y en el rendimiento. No se observo variacion en el contenido de aceite de los frutos. El numero de granos/capitulo y el peso de 100 granos disminuyo a medida que el contenido de sodio aumento y disminuyo la fertilidad dsuelo. La diminucion del peso de 100 granos mostro una respuesta asintotica la cual fue similar en ambos cultivares. La resistencia mecanica a la penetracion radical y la densidad aparente de las capas superiores del suelo no estuvieron correlacionadas con los cambios producidos en el crecimiento y rendimiento. El indice de cosecha no vario en gran medida entre cultivares y diferentes tipos de suelo y oscilo entre 0.37 y 0.57. |
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Palavras-Chave: |
Growth; Sunflower; Yield. |
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Thesagro: |
Crescimento; Girassol; Rendimento; Solo. |
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Thesaurus Nal: |
Argentina; soil. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01915naa a2200241 a 4500
001 1453040
005 2004-10-28
008 1985 bl uuuu u00u1 u #d
100 1 $aHERNANDEZ, L. F.
245 $aVariaciones edaficas en suelos bajo riego y su influencia en el crecimiento y rendimento del girasol.
260 $c1985
520 $aLos componentes del rendimiento de girasol (cvs. Dekalb G-90 y Dekalb G-97) fueron evaluados en relacion a variaciones en la fertilidad, contenido de sodio del suelo y en la penetrabilidad radicular como producto de la sistematizacion. Los experimentos se realizaron bajo riego en el valle inferior del Rio Colorado, sur de la Provincia de Buenos Aires (lat. 39o 31' S.; long. 62o 38' W.). Los efectos del contenido de sodio en el suelo sobre el cultivo fueron un retraso en la germinacion y emergencia de las plantulas y una disminucion en la altura de las plantas y en el rendimiento. No se observo variacion en el contenido de aceite de los frutos. El numero de granos/capitulo y el peso de 100 granos disminuyo a medida que el contenido de sodio aumento y disminuyo la fertilidad dsuelo. La diminucion del peso de 100 granos mostro una respuesta asintotica la cual fue similar en ambos cultivares. La resistencia mecanica a la penetracion radical y la densidad aparente de las capas superiores del suelo no estuvieron correlacionadas con los cambios producidos en el crecimiento y rendimiento. El indice de cosecha no vario en gran medida entre cultivares y diferentes tipos de suelo y oscilo entre 0.37 y 0.57.
650 $aArgentina
650 $asoil
650 $aCrescimento
650 $aGirassol
650 $aRendimento
650 $aSolo
653 $aGrowth
653 $aSunflower
653 $aYield
700 1 $aORIOLO, G. A.
773 $tIn: CONFERENCIA INTERNACIONAL DE GIRASOL, 11., 1985. Mar del Plata. Actas. Mar del Plata: ASAGIR/ISA, 1985, t.1, p.227-233.
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Registro original: |
Embrapa Soja (CNPSO) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Mandioca e Fruticultura. Para informações adicionais entre em contato com cnpmf.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
12/01/2011 |
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Data da última atualização: |
19/01/2011 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
SILVA, M. F. e; MIROLI, D. M. B. P.; CARDINALI, M. C. B.; MASCARENHAS, Y. P.; MARTINS, P. K.; FREITAS ASTUA, J. de; MACHADO, M. A. |
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Afiliação: |
Marina França e Silva, CNPDIA; Débora Marcondes Bastos Pereira Miroli, CNPDIA; Marcelo C. B. Cardinali, CNPDIA; Yvonne P. Mascarenhas, USP; Polyanna kelly Martins, APTA; JULIANA DE FREITAS ASTUA, CNPMF; Marcos Antonio Machado, APTA. |
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Título: |
Application of fourier transform infrared spectroscopy (FTIR) for early diagnosis of citrus greening disease. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
In: CONFERENCE INTERNATIONAL ORGANIZATION CITRUS VIROLOGISTS, 18., Campinas, SP, 2010. Proceedings... Campinas: IOCV, 2010. 1 CD-ROM. |
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Idioma: |
Inglês |
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Notas: |
120_PS2
Publicado também em: Citrus Research & Technology, Cordeirópolis, v. 31, Suplemento, 2010 |
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Conteúdo: |
Several diseases have caused great damage to citrus production worldwide. Among them, Greening is the most feared for its aggressiveness, speed of spread, and a lack of resistant variety. Infected plants goes through a long asymptomatic period (around 6 to 36 months), allowing the permanence of inocullum in the field. This study purpose to evaluate the capability of early diagnosis of spectroscopy at infrared with transformed Fourier (FTIR) for the Greening disease. For both, 60 citrus seedlings were inoculated with Candidatus Liberibater asiaticus (CLas) and 60 healthy seedlings (control) were kept in a greenhouse, which grown under controlled conditions of soil, irrigation and nutrients. Their leaves were measured monthly using FTIR spectroscopy during eight months. The evolution of the bacteria on inoculated plants was monitored by RT-qPCR (real-time quantitative PCR) amplification of CLas sequences. The spectra were analyzed using Principal Component Analysis (PCA). For all the months, it was shown separation between the asymptomatic and healthy leaves, emphasizing that significant chemical changes are occurring before symptomatic phase. Preliminary analyses showed that infected plants suffered a decreasing in concentrations of carbohydrate and chlorophyll. The results also showed that is possible to recognize a typical signature of sick leaf using FTIR spectroscopy, even in symptomatic phase, which must be studied as a feasible tool to develop a methodology for early citrus greening detection. MenosSeveral diseases have caused great damage to citrus production worldwide. Among them, Greening is the most feared for its aggressiveness, speed of spread, and a lack of resistant variety. Infected plants goes through a long asymptomatic period (around 6 to 36 months), allowing the permanence of inocullum in the field. This study purpose to evaluate the capability of early diagnosis of spectroscopy at infrared with transformed Fourier (FTIR) for the Greening disease. For both, 60 citrus seedlings were inoculated with Candidatus Liberibater asiaticus (CLas) and 60 healthy seedlings (control) were kept in a greenhouse, which grown under controlled conditions of soil, irrigation and nutrients. Their leaves were measured monthly using FTIR spectroscopy during eight months. The evolution of the bacteria on inoculated plants was monitored by RT-qPCR (real-time quantitative PCR) amplification of CLas sequences. The spectra were analyzed using Principal Component Analysis (PCA). For all the months, it was shown separation between the asymptomatic and healthy leaves, emphasizing that significant chemical changes are occurring before symptomatic phase. Preliminary analyses showed that infected plants suffered a decreasing in concentrations of carbohydrate and chlorophyll. The results also showed that is possible to recognize a typical signature of sick leaf using FTIR spectroscopy, even in symptomatic phase, which must be studied as a feasible tool to develop a methodology for early ci... Mostrar Tudo |
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Palavras-Chave: |
Candidatus Liberibater asiaticus; Plant disease. |
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Thesagro: |
Bactéria; Doença de Planta; Fruta Cítrica; Greening. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 02492nam a2200265 a 4500
001 1872725
005 2011-01-19
008 2010 bl uuuu u00u1 u #d
100 1 $aSILVA, M. F. e
245 $aApplication of fourier transform infrared spectroscopy (FTIR) for early diagnosis of citrus greening disease.
260 $aIn: CONFERENCE INTERNATIONAL ORGANIZATION CITRUS VIROLOGISTS, 18., Campinas, SP, 2010. Proceedings... Campinas: IOCV, 2010. 1 CD-ROM.$c2010
500 $a120_PS2 Publicado também em: Citrus Research & Technology, Cordeirópolis, v. 31, Suplemento, 2010
520 $aSeveral diseases have caused great damage to citrus production worldwide. Among them, Greening is the most feared for its aggressiveness, speed of spread, and a lack of resistant variety. Infected plants goes through a long asymptomatic period (around 6 to 36 months), allowing the permanence of inocullum in the field. This study purpose to evaluate the capability of early diagnosis of spectroscopy at infrared with transformed Fourier (FTIR) for the Greening disease. For both, 60 citrus seedlings were inoculated with Candidatus Liberibater asiaticus (CLas) and 60 healthy seedlings (control) were kept in a greenhouse, which grown under controlled conditions of soil, irrigation and nutrients. Their leaves were measured monthly using FTIR spectroscopy during eight months. The evolution of the bacteria on inoculated plants was monitored by RT-qPCR (real-time quantitative PCR) amplification of CLas sequences. The spectra were analyzed using Principal Component Analysis (PCA). For all the months, it was shown separation between the asymptomatic and healthy leaves, emphasizing that significant chemical changes are occurring before symptomatic phase. Preliminary analyses showed that infected plants suffered a decreasing in concentrations of carbohydrate and chlorophyll. The results also showed that is possible to recognize a typical signature of sick leaf using FTIR spectroscopy, even in symptomatic phase, which must be studied as a feasible tool to develop a methodology for early citrus greening detection.
650 $aBactéria
650 $aDoença de Planta
650 $aFruta Cítrica
650 $aGreening
653 $aCandidatus Liberibater asiaticus
653 $aPlant disease
700 1 $aMIROLI, D. M. B. P.
700 1 $aCARDINALI, M. C. B.
700 1 $aMASCARENHAS, Y. P.
700 1 $aMARTINS, P. K.
700 1 $aFREITAS ASTUA, J. de
700 1 $aMACHADO, M. A.
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