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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
11/02/2008 |
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Data da última atualização: |
12/02/2008 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BASSANEZI, R. B.; LARANJEIRA, F. F. |
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Afiliação: |
R. B. Bassaneri, FUNDECITRUS; Francisco Ferraz Laranjeira, CNPMF. |
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Título: |
Spatial patterns of leprosis and its mite vector in commercial citrus groves in Brazil. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
Plant Patholology, Oxford, v. 56, p. 97-106, 2007. |
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Idioma: |
Português |
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Notas: |
DOI: 10.1111/j.1365-3059.2006.01457.x |
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Conteúdo: |
In order to describe the dissemination of Citrus leprosis virus (CiLV) and Brevipalpus phoenicis, the Tenuipalpidae mite which transmits it, as well as to generate data for future development of better sampling and disease control procedures, analyses were conducted at three levels of spatial hierarchy. Over 100 distribution maps of mite-infested plants and plants with CiLV symptoms were constructed after evaluation of 174 sweet orange commercial grove blocks from four citrus regions of São Paulo State, Brazil. Spatial correlation between maps of mite-infested plants and those with CiLV symptoms
was very low and mostly not significant. Spatial dependency between adjacent plants was incipient as ordinary runs analysis showed that percentages of aggregated sequences within or across rows were very low for both mite-infested and diseased
plants. Index of dispersion (D) values for all quadrat sizes suggested aggregation of plants with symptoms within quadrats, but much less aggregation for mite-infested plants. Values of log(A) and b were higher than 0 and 1, respectively, indicating a general and significant aggregation of infested/diseased plants inside quadrats. However, the degree of aggregation of plants with symptoms was higher than that of infested plants. Aggregation in each grove was positively correlated to the incidence of infested/diseased plants. Spatial autocorrelation also showed a higher strength of aggregation for plants with
symptoms than for infested ones. This is the first time that spatial patterns of leprosis and
B. phoenicis have been described. MenosIn order to describe the dissemination of Citrus leprosis virus (CiLV) and Brevipalpus phoenicis, the Tenuipalpidae mite which transmits it, as well as to generate data for future development of better sampling and disease control procedures, analyses were conducted at three levels of spatial hierarchy. Over 100 distribution maps of mite-infested plants and plants with CiLV symptoms were constructed after evaluation of 174 sweet orange commercial grove blocks from four citrus regions of São Paulo State, Brazil. Spatial correlation between maps of mite-infested plants and those with CiLV symptoms
was very low and mostly not significant. Spatial dependency between adjacent plants was incipient as ordinary runs analysis showed that percentages of aggregated sequences within or across rows were very low for both mite-infested and diseased
plants. Index of dispersion (D) values for all quadrat sizes suggested aggregation of plants with symptoms within quadrats, but much less aggregation for mite-infested plants. Values of log(A) and b were higher than 0 and 1, respectively, indicating a general and significant aggregation of infested/diseased plants inside quadrats. However, the degree of aggregation of plants with symptoms was higher than that of infested plants. Aggregation in each grove was positively correlated to the incidence of infested/diseased plants. Spatial autocorrelation also showed a higher strength of aggregation for plants with
symptoms than for infested ones. Thi... Mostrar Tudo |
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Palavras-Chave: |
Aggregation; Citrus leprosis virus; Epidemics; Spatial analysis. |
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Thesagro: |
Brevipalpus Phoenicis; Citrus Sinensis. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02238naa a2200217 a 4500
001 1654620
005 2008-02-12
008 2007 bl --- 0-- u #d
100 1 $aBASSANEZI, R. B.
245 $aSpatial patterns of leprosis and its mite vector in commercial citrus groves in Brazil.
260 $c2007
500 $aDOI: 10.1111/j.1365-3059.2006.01457.x
520 $aIn order to describe the dissemination of Citrus leprosis virus (CiLV) and Brevipalpus phoenicis, the Tenuipalpidae mite which transmits it, as well as to generate data for future development of better sampling and disease control procedures, analyses were conducted at three levels of spatial hierarchy. Over 100 distribution maps of mite-infested plants and plants with CiLV symptoms were constructed after evaluation of 174 sweet orange commercial grove blocks from four citrus regions of São Paulo State, Brazil. Spatial correlation between maps of mite-infested plants and those with CiLV symptoms was very low and mostly not significant. Spatial dependency between adjacent plants was incipient as ordinary runs analysis showed that percentages of aggregated sequences within or across rows were very low for both mite-infested and diseased plants. Index of dispersion (D) values for all quadrat sizes suggested aggregation of plants with symptoms within quadrats, but much less aggregation for mite-infested plants. Values of log(A) and b were higher than 0 and 1, respectively, indicating a general and significant aggregation of infested/diseased plants inside quadrats. However, the degree of aggregation of plants with symptoms was higher than that of infested plants. Aggregation in each grove was positively correlated to the incidence of infested/diseased plants. Spatial autocorrelation also showed a higher strength of aggregation for plants with symptoms than for infested ones. This is the first time that spatial patterns of leprosis and B. phoenicis have been described.
650 $aBrevipalpus Phoenicis
650 $aCitrus Sinensis
653 $aAggregation
653 $aCitrus leprosis virus
653 $aEpidemics
653 $aSpatial analysis
700 1 $aLARANJEIRA, F. F.
773 $tPlant Patholology, Oxford$gv. 56, p. 97-106, 2007.
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Esconder MarcMostrar Marc Completo |
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Semiárido; Embrapa Unidades Centrais. |
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Data corrente: |
04/07/1996 |
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Data da última atualização: |
27/10/1997 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Nacional - B |
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Autoria: |
LOPES FILHO, F.; ASSUNCAO, M. V.; VIEIRA, F. V. |
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Afiliação: |
CPATSA. |
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Título: |
Efeito da embalagem, periodo e local de armazenamento na qualidade de sementes de sorgo. |
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Ano de publicação: |
1986 |
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Fonte/Imprenta: |
Pesquisa Agropecuaria Brasileira, Brasilia, v.21, n.8, p.801-811, Ago. 1986. |
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Idioma: |
Português |
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Conteúdo: |
Sementes de sorgo (Sorghum bicolor (L.) Moench) cv. EA-955 foram condicionadas em latas de metal vedadas, sacos de pano e de polipropileno e armazenadas sob condicoes naturais, em quatro localidades do Estado do Ceara: Fortaleza, Quixada, Morada Nova e Ubajara, com o objetivo de determinar a influencia da embalagem do local e do periodo de armazenamento sobre a sua qualidade fisiologica. Mensalmente, foi determinado o teor de umidade das sementes, e a cada dois meses a qualidade das sementes era avaliada por meio de testes de germinacao, vigor (comprimento de raiz) e peso seco de plantulas. utilizou-se um delineamento na esquema fatorial, no qual os fatores eram cinco periodos de armazenamento (0, 2, 4, 6 e 8 meses) e tres tipos de embalagem (lata, pano, polipropileno), com quatro repeticoes. Durante o periodo de armazenamento, observou-se ser a lata de metal a embalagem que melhor preserva a qualidade das sementes. No que se refere aos locais, constatou-se que as sementes armazenadas em ubajara mostraram melhor qualidade do que as sementes estocadas nas outras localidades. |
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Palavras-Chave: |
Dry weight; Package; Peso seco; Quality; Seed; Sorghum. |
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Thesagro: |
Armazenamento; Embalagem; Germinação; Qualidade; Semente; Sorghum Bicolor; Sorgo. |
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Thesaurus NAL: |
germination; seed storage; vigor. |
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Categoria do assunto: |
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A Sistemas de Cultivo |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/143567/1/7508-1.pdf
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Marc: |
LEADER 01956naa a2200337 a 4500
001 1104383
005 1997-10-27
008 1986 bl uuuu u00u1 u #d
100 1 $aLOPES FILHO, F.
245 $aEfeito da embalagem, periodo e local de armazenamento na qualidade de sementes de sorgo.
260 $c1986
520 $aSementes de sorgo (Sorghum bicolor (L.) Moench) cv. EA-955 foram condicionadas em latas de metal vedadas, sacos de pano e de polipropileno e armazenadas sob condicoes naturais, em quatro localidades do Estado do Ceara: Fortaleza, Quixada, Morada Nova e Ubajara, com o objetivo de determinar a influencia da embalagem do local e do periodo de armazenamento sobre a sua qualidade fisiologica. Mensalmente, foi determinado o teor de umidade das sementes, e a cada dois meses a qualidade das sementes era avaliada por meio de testes de germinacao, vigor (comprimento de raiz) e peso seco de plantulas. utilizou-se um delineamento na esquema fatorial, no qual os fatores eram cinco periodos de armazenamento (0, 2, 4, 6 e 8 meses) e tres tipos de embalagem (lata, pano, polipropileno), com quatro repeticoes. Durante o periodo de armazenamento, observou-se ser a lata de metal a embalagem que melhor preserva a qualidade das sementes. No que se refere aos locais, constatou-se que as sementes armazenadas em ubajara mostraram melhor qualidade do que as sementes estocadas nas outras localidades.
650 $agermination
650 $aseed storage
650 $avigor
650 $aArmazenamento
650 $aEmbalagem
650 $aGerminação
650 $aQualidade
650 $aSemente
650 $aSorghum Bicolor
650 $aSorgo
653 $aDry weight
653 $aPackage
653 $aPeso seco
653 $aQuality
653 $aSeed
653 $aSorghum
700 1 $aASSUNCAO, M. V.
700 1 $aVIEIRA, F. V.
773 $tPesquisa Agropecuaria Brasileira, Brasilia$gv.21, n.8, p.801-811, Ago. 1986.
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Registro original: |
Embrapa Unidades Centrais (AI-SEDE) |
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