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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
30/05/2000 |
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Data da última atualização: |
30/05/2000 |
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Autoria: |
ALMEIDA, L. C. de. |
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Título: |
Resistencia vertical e horizontal a Hemileia vastatrix Berk et Br. em geracoes F4 e F5 de progenies de cafeeiros `Catimor'. |
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Ano de publicação: |
1980 |
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Fonte/Imprenta: |
Vicosa: UFV, 1980. |
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Páginas: |
40p. |
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Idioma: |
Português |
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Notas: |
Tese Mestrado. |
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Conteúdo: |
Estudo sobre a segregacao de progenies de `Catimor' ('Caturra' x hibrido de `Timor') em geracoes F4 e F5, visando a selecao de cafeeiros (Coffea arabica) a Hemileia vastatrix Berk et Br. Foram testadas 21 progenies em F4 e 84 em F5. Foi avaliou a resistencia vertical, a fim de se identificar manifestacoes de resistencia horizontal em plantas segregantes para suscetibilidade. Como inoculo foram utilizados uredosporos do patogeno, com predominancia da raca II. Os parametros avaliados foram: evolucao da doenca, periodo latente de infeccao, numero de pustulas esporuladas por folha e intensidade de ferrugem por folha, o que permitiu a constatacao de diferentes niveis de resistencia horizontal entre onze progenies de `Catmor'. O alto grau de resistencia a ferrugem verificado em algumas progenies (UFV 1350, UFV 1353, UFG 1359, UFV 1441, UFV 1449, UFV 1452, UFV 1545, UFV 1451, UFV 1606, UFV 1610, em geracoes F4 e F5) indicaram essas progenies como promissoras para a continuacao do programa de melhoramento visando resistencia ao fungo. |
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Palavras-Chave: |
Brasil; Coffee; Fungal diseases; Hemileia vastratrix; Minas Gerais; Resistance. |
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Thesagro: |
Café; Coffea Arábica; Doença; Ferrugem; Fungo; Progênie; Resistência. |
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Thesaurus Nal: |
Brazil; fungi; progeny. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01863nam a2200325 a 4500
001 1559938
005 2000-05-30
008 1980 bl uuuu m 00u1 u #d
100 1 $aALMEIDA, L. C. de
245 $aResistencia vertical e horizontal a Hemileia vastatrix Berk et Br. em geracoes F4 e F5 de progenies de cafeeiros `Catimor'.
260 $aVicosa: UFV$c1980
300 $a40p.
500 $aTese Mestrado.
520 $aEstudo sobre a segregacao de progenies de `Catimor' ('Caturra' x hibrido de `Timor') em geracoes F4 e F5, visando a selecao de cafeeiros (Coffea arabica) a Hemileia vastatrix Berk et Br. Foram testadas 21 progenies em F4 e 84 em F5. Foi avaliou a resistencia vertical, a fim de se identificar manifestacoes de resistencia horizontal em plantas segregantes para suscetibilidade. Como inoculo foram utilizados uredosporos do patogeno, com predominancia da raca II. Os parametros avaliados foram: evolucao da doenca, periodo latente de infeccao, numero de pustulas esporuladas por folha e intensidade de ferrugem por folha, o que permitiu a constatacao de diferentes niveis de resistencia horizontal entre onze progenies de `Catmor'. O alto grau de resistencia a ferrugem verificado em algumas progenies (UFV 1350, UFV 1353, UFG 1359, UFV 1441, UFV 1449, UFV 1452, UFV 1545, UFV 1451, UFV 1606, UFV 1610, em geracoes F4 e F5) indicaram essas progenies como promissoras para a continuacao do programa de melhoramento visando resistencia ao fungo.
650 $aBrazil
650 $afungi
650 $aprogeny
650 $aCafé
650 $aCoffea Arábica
650 $aDoença
650 $aFerrugem
650 $aFungo
650 $aProgênie
650 $aResistência
653 $aBrasil
653 $aCoffee
653 $aFungal diseases
653 $aHemileia vastratrix
653 $aMinas Gerais
653 $aResistance
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Registro original: |
Embrapa Cerrados (CPAC) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agrobiologia. Para informações adicionais entre em contato com cnpab.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
06/11/2008 |
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Data da última atualização: |
16/03/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Internacional - A |
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Autoria: |
MACEDO, M. O.; RESENDE, A. S. de; GARCIA, P. C.; BODDEY, R. M.; JANTALIA, C. P.; URQUIAGA, S.; CAMPELLO, E. F. C.; FRANCO, A. A. |
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Afiliação: |
M. O. Macedo, UFRRJ; Alexander Silva de Resende, Embrapa Agrobiologia; P. C. Garcia, UFRRJ; Robert Michael Boddey, Embrapa Agrobiologia; Claudia Pozzi Jantalia, Embrapa Agrobiologia; Segundo Urquiaga, Embrapa Agrobiologia; Eduardo Francia Carneiro Campello, Embrapa Agrobiologia; Avílio Antonio Franco, Embrapa Agrobiologia. |
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Título: |
Changes in soil C and N stocks and nutrient dynamics 13 years after recovery of degraded land ursing leguminous nitrogen-fixing trees. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
Forest Ecology and Management, Amsterdam, v. 255, n. 5-6, p. 1516-1524, apr. 2008. |
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Idioma: |
Inglês |
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Notas: |
Parceria: UFRRJ. |
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Conteúdo: |
In tropical forest areas with highly weathered soils, organic matter plays an important role in soil functioning and forest sustainability. When forests are clear-cut, the soil begins almost immediately to lose organic matter, triggering a series of soil degradation processes, the extent and intensity of which depends on soil management. Depending on the level of soil degradation, the rate at which the system can re-establish itself can be slow and may require the use of degraded land restoration techniques. This study aimed at evaluating the potential of pioneer leguminous nitrogen-fixing trees to recuperate degraded land. The area studied ? located in the coastal town of Angra dos Reis in the State of Rio de Janeiro, Brazil ? was planted with seven species of fast-growing leguminous nitrogen-fixing trees in 1991. The nutrient concentrations (Ca, Mg, P and K) and N and C stocks in the soil and litter were determined, in addition to the free- and occluded-light fractions of soil organic matter. Soil samples were also collected from two reference areas: (1) an area of undisturbed native forest; and (2) a deforested area spontaneously colonised by Guinea grass (Panicum maximum). The nutrient stocks in the litter of the restored area were similar to those found in native forest. The recuperation technique used was able to re-establish the soil C and N stocks after 13 years. C and N increased by 1.73 and 0.13 Mg ha-1 year-1, respectively. The free-light fraction was highest in the recuperated area and lowest in the deforested area. The occluded-light fraction of the recuperated area was higher than that of the native forest only in the 0?5 cm layer. Both the free-light and occluded fractions were higher in the native forest and recuperated areas than in the deforested area. Since the free-light and the occluded-light fractions are the result of litterfall and decomposition, these results ? combined with the data of litter stocks and soil C and N stocks ? indicate that the use of legume trees was efficient in re-establishing the nutrient cycling processes of the systems. These results also show that recovering degraded land with this technique is effective in sequestering carbon dioxide from the atmosphere at high rates. MenosIn tropical forest areas with highly weathered soils, organic matter plays an important role in soil functioning and forest sustainability. When forests are clear-cut, the soil begins almost immediately to lose organic matter, triggering a series of soil degradation processes, the extent and intensity of which depends on soil management. Depending on the level of soil degradation, the rate at which the system can re-establish itself can be slow and may require the use of degraded land restoration techniques. This study aimed at evaluating the potential of pioneer leguminous nitrogen-fixing trees to recuperate degraded land. The area studied ? located in the coastal town of Angra dos Reis in the State of Rio de Janeiro, Brazil ? was planted with seven species of fast-growing leguminous nitrogen-fixing trees in 1991. The nutrient concentrations (Ca, Mg, P and K) and N and C stocks in the soil and litter were determined, in addition to the free- and occluded-light fractions of soil organic matter. Soil samples were also collected from two reference areas: (1) an area of undisturbed native forest; and (2) a deforested area spontaneously colonised by Guinea grass (Panicum maximum). The nutrient stocks in the litter of the restored area were similar to those found in native forest. The recuperation technique used was able to re-establish the soil C and N stocks after 13 years. C and N increased by 1.73 and 0.13 Mg ha-1 year-1, respectively. The free-light fraction was highest in t... Mostrar Tudo |
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Palavras-Chave: |
Ciclo do nutriente; Reabilitação de terras. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03024naa a2200241 a 4500
001 1630311
005 2015-03-16
008 2008 bl --- 0-- u #d
100 1 $aMACEDO, M. O.
245 $aChanges in soil C and N stocks and nutrient dynamics 13 years after recovery of degraded land ursing leguminous nitrogen-fixing trees.
260 $c2008
500 $aParceria: UFRRJ.
520 $aIn tropical forest areas with highly weathered soils, organic matter plays an important role in soil functioning and forest sustainability. When forests are clear-cut, the soil begins almost immediately to lose organic matter, triggering a series of soil degradation processes, the extent and intensity of which depends on soil management. Depending on the level of soil degradation, the rate at which the system can re-establish itself can be slow and may require the use of degraded land restoration techniques. This study aimed at evaluating the potential of pioneer leguminous nitrogen-fixing trees to recuperate degraded land. The area studied ? located in the coastal town of Angra dos Reis in the State of Rio de Janeiro, Brazil ? was planted with seven species of fast-growing leguminous nitrogen-fixing trees in 1991. The nutrient concentrations (Ca, Mg, P and K) and N and C stocks in the soil and litter were determined, in addition to the free- and occluded-light fractions of soil organic matter. Soil samples were also collected from two reference areas: (1) an area of undisturbed native forest; and (2) a deforested area spontaneously colonised by Guinea grass (Panicum maximum). The nutrient stocks in the litter of the restored area were similar to those found in native forest. The recuperation technique used was able to re-establish the soil C and N stocks after 13 years. C and N increased by 1.73 and 0.13 Mg ha-1 year-1, respectively. The free-light fraction was highest in the recuperated area and lowest in the deforested area. The occluded-light fraction of the recuperated area was higher than that of the native forest only in the 0?5 cm layer. Both the free-light and occluded fractions were higher in the native forest and recuperated areas than in the deforested area. Since the free-light and the occluded-light fractions are the result of litterfall and decomposition, these results ? combined with the data of litter stocks and soil C and N stocks ? indicate that the use of legume trees was efficient in re-establishing the nutrient cycling processes of the systems. These results also show that recovering degraded land with this technique is effective in sequestering carbon dioxide from the atmosphere at high rates.
653 $aCiclo do nutriente
653 $aReabilitação de terras
700 1 $aRESENDE, A. S. de
700 1 $aGARCIA, P. C.
700 1 $aBODDEY, R. M.
700 1 $aJANTALIA, C. P.
700 1 $aURQUIAGA, S.
700 1 $aCAMPELLO, E. F. C.
700 1 $aFRANCO, A. A.
773 $tForest Ecology and Management, Amsterdam$gv. 255, n. 5-6, p. 1516-1524, apr. 2008.
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