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 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas; Embrapa Uva e Vinho. |
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Data corrente: |
15/12/2011 |
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Data da última atualização: |
28/05/2012 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
OLIVEIRA, P. R. D. de; RITSCHEL, P. S.; RUFATO, A. De R.; FIORAVANÇO, J. C.; FAORO, I. D.; LEITE, G. B.; DUTRA, L. F.; MAYER, N. A.; DEGENHARDT-GOLDBACH, J. |
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Afiliação: |
PAULO RICARDO DIAS DE OLIVEIRA, CNPUV; PATRICIA SILVA RITSCHEL, CNPUV; ANDREA DE ROSSI RUFATO, CNPUV; JOAO CAETANO FIORAVANCO, CNPUV; I. D. FAORO, EPAGRI; G. B. LEITE, EPAGRI; LEONARDO FERREIRA DUTRA, CPACT; NEWTON ALEX MAYER, CPACT; JULIANA DEGENHARDT GOLD. |
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Título: |
The Brazilian pear breeding program. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Acta Horticulturae, The Hague, n. 909, p. 145-151, out. 2011. |
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ISBN: |
978-90-66055-04-9 |
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Idioma: |
Inglês |
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Notas: |
Trabalho apresentado no 11º International Pear Symposium. |
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Conteúdo: |
Pear production in Brazil reached 17,391 tons in 2008, enough to provide for a mere 20% of the local market. The lack of adapted cultivars is a major obstacle to self-sustainable pear production in the country. In 2006, a novel nationwide pear breeding program was initiated, encompassing several research institutions and aiming to develop cultivars adapted to local growth conditions in an attempt to reverse the current pear importer status of Brazil. The program is structured in distinct research lines, including: enlargement of the genetic variation available in germplasm collections; formation and evaluation of segregating populations, hybrids and selections of scion and rootstock materials; network cultivar agricultural evaluations; screening of gamma-irradiated mutants of scion materials; and genetic transformation employing disease resistance genes. The main results obtained so far include: 12 scion populations consisting in a total of approximately 1,000 individuals; 220 rootstock seedlings (Pyrus communis) under mass selection in Pelotas, RS; 200 P. communis seedlings for rootstocks under field selection in Lages, SC; selection of six promising P. communis rootstocks; establishment of a cultivar evaluation network consisting of five cultivars (?Abate Fetel?, ?Packham?s Triumph?, ?Rocha?, ?Santa Maria? and ?William?s?) shared by all evaluation sites, and other five locality-specific cultivars; and 475 putative mutants under field evaluation. |
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Palavras-Chave: |
Brasil; Cultivar; Melhoramento genético; Programa de Melhoramento Genético; Selection. |
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Thesagro: |
Engenharia Genética; Fruticultura; Germoplasma; Mutagênico; Pera; Seleção; Variedade. |
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Thesaurus Nal: |
genetic engineering; germplasm; mutagenesis; Pyrus. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02659naa a2200433 a 4500
001 1910038
005 2012-05-28
008 2011 bl uuuu u00u1 u #d
020 $a978-90-66055-04-9
100 1 $aOLIVEIRA, P. R. D. de
245 $aThe Brazilian pear breeding program.$h[electronic resource]
260 $c2011
500 $aTrabalho apresentado no 11º International Pear Symposium.
520 $aPear production in Brazil reached 17,391 tons in 2008, enough to provide for a mere 20% of the local market. The lack of adapted cultivars is a major obstacle to self-sustainable pear production in the country. In 2006, a novel nationwide pear breeding program was initiated, encompassing several research institutions and aiming to develop cultivars adapted to local growth conditions in an attempt to reverse the current pear importer status of Brazil. The program is structured in distinct research lines, including: enlargement of the genetic variation available in germplasm collections; formation and evaluation of segregating populations, hybrids and selections of scion and rootstock materials; network cultivar agricultural evaluations; screening of gamma-irradiated mutants of scion materials; and genetic transformation employing disease resistance genes. The main results obtained so far include: 12 scion populations consisting in a total of approximately 1,000 individuals; 220 rootstock seedlings (Pyrus communis) under mass selection in Pelotas, RS; 200 P. communis seedlings for rootstocks under field selection in Lages, SC; selection of six promising P. communis rootstocks; establishment of a cultivar evaluation network consisting of five cultivars (?Abate Fetel?, ?Packham?s Triumph?, ?Rocha?, ?Santa Maria? and ?William?s?) shared by all evaluation sites, and other five locality-specific cultivars; and 475 putative mutants under field evaluation.
650 $agenetic engineering
650 $agermplasm
650 $amutagenesis
650 $aPyrus
650 $aEngenharia Genética
650 $aFruticultura
650 $aGermoplasma
650 $aMutagênico
650 $aPera
650 $aSeleção
650 $aVariedade
653 $aBrasil
653 $aCultivar
653 $aMelhoramento genético
653 $aPrograma de Melhoramento Genético
653 $aSelection
700 1 $aRITSCHEL, P. S.
700 1 $aRUFATO, A. De R.
700 1 $aFIORAVANÇO, J. C.
700 1 $aFAORO, I. D.
700 1 $aLEITE, G. B.
700 1 $aDUTRA, L. F.
700 1 $aMAYER, N. A.
700 1 $aDEGENHARDT-GOLDBACH, J.
773 $tActa Horticulturae, The Hague$gn. 909, p. 145-151, out. 2011.
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Registro original: |
Embrapa Uva e Vinho (CNPUV) |
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Origem |
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Cutter |
Registro |
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Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Rondônia. |
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Data corrente: |
06/02/2018 |
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Data da última atualização: |
06/02/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
VARGAS, L. A.; PASSOS, A. M. A.; MARCILIO, V. A.; BRUGNERA, F. A.; LEITE, V. P. D.; COSTA, R. S. C. da. |
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Afiliação: |
ROGERIO SEBASTIAO CORREA DA COSTA, CPAF-Rondonia. |
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Título: |
Soil seed bank phytosociology in no-tillage systems in the Southwestern Amazon Region. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
American Journal of Plant Sciences, v. 8, p. 3399-3413, 2017. |
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DOI: |
10.4236/ajps.2017.813228 |
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Idioma: |
Português |
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Conteúdo: |
Understanding the ecological dynamics of weed populations in no-tillage systems is important to establish strategies for integrated weed control capable of increasing agroecosystem sustainability. This study sought to evaluate the effect of succession systems on the seed bank in a no-tillage system. The effects of fifteen succession systems, composed of seven grasses, seven Leguminosae , and a fallow condition, were evaluated on the seed bank at two soil depths (0 to 10 and 10 to 20 cm). The species found in the seed bank were quantified and identified by species and family. The precision of sampling, density, dominance, the indices of diversity of Simpson and Shannon-Weiner; index of sustainability; analysis of groupings of dissimilarities; and the value of importance of each species were calculated. High weed diversity was observed; 29 species were counted, including members of 12 different families. The highest expression of weeds was observed at soil depths of 0 to 10 cm. The Simpson and Shannon-Weiner coefficients indicated high diversity in both systems of succession. The index of sustainability did not indicate significant alterations in the different systems of succession. The coefficients of confenetic correlation were 0.74% and 0.82% for the 0 - 10 and the 10 - 20 cm soil depths respectively. It is concluded that there is a high diversity of weeds in the agroecosystems of Amazonia, and different cover crops promote modifications in the community and expression of the weeds? seed bank. MenosUnderstanding the ecological dynamics of weed populations in no-tillage systems is important to establish strategies for integrated weed control capable of increasing agroecosystem sustainability. This study sought to evaluate the effect of succession systems on the seed bank in a no-tillage system. The effects of fifteen succession systems, composed of seven grasses, seven Leguminosae , and a fallow condition, were evaluated on the seed bank at two soil depths (0 to 10 and 10 to 20 cm). The species found in the seed bank were quantified and identified by species and family. The precision of sampling, density, dominance, the indices of diversity of Simpson and Shannon-Weiner; index of sustainability; analysis of groupings of dissimilarities; and the value of importance of each species were calculated. High weed diversity was observed; 29 species were counted, including members of 12 different families. The highest expression of weeds was observed at soil depths of 0 to 10 cm. The Simpson and Shannon-Weiner coefficients indicated high diversity in both systems of succession. The index of sustainability did not indicate significant alterations in the different systems of succession. The coefficients of confenetic correlation were 0.74% and 0.82% for the 0 - 10 and the 10 - 20 cm soil depths respectively. It is concluded that there is a high diversity of weeds in the agroecosystems of Amazonia, and different cover crops promote modifications in the community and expression of t... Mostrar Tudo |
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Palavras-Chave: |
Fitossociologia; Sorghum sudanense. |
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Thesagro: |
Plantio direto. |
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Categoria do assunto: |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/169382/1/Soil-seed.pdf
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Marc: |
LEADER 02220naa a2200229 a 4500
001 2087214
005 2018-02-06
008 2017 bl --- 0-- u #d
024 7 $a10.4236/ajps.2017.813228$2DOI
100 1 $aVARGAS, L. A.
245 $aSoil seed bank phytosociology in no-tillage systems in the Southwestern Amazon Region.$h[electronic resource]
260 $c2017
520 $aUnderstanding the ecological dynamics of weed populations in no-tillage systems is important to establish strategies for integrated weed control capable of increasing agroecosystem sustainability. This study sought to evaluate the effect of succession systems on the seed bank in a no-tillage system. The effects of fifteen succession systems, composed of seven grasses, seven Leguminosae , and a fallow condition, were evaluated on the seed bank at two soil depths (0 to 10 and 10 to 20 cm). The species found in the seed bank were quantified and identified by species and family. The precision of sampling, density, dominance, the indices of diversity of Simpson and Shannon-Weiner; index of sustainability; analysis of groupings of dissimilarities; and the value of importance of each species were calculated. High weed diversity was observed; 29 species were counted, including members of 12 different families. The highest expression of weeds was observed at soil depths of 0 to 10 cm. The Simpson and Shannon-Weiner coefficients indicated high diversity in both systems of succession. The index of sustainability did not indicate significant alterations in the different systems of succession. The coefficients of confenetic correlation were 0.74% and 0.82% for the 0 - 10 and the 10 - 20 cm soil depths respectively. It is concluded that there is a high diversity of weeds in the agroecosystems of Amazonia, and different cover crops promote modifications in the community and expression of the weeds? seed bank.
650 $aPlantio direto
653 $aFitossociologia
653 $aSorghum sudanense
700 1 $aPASSOS, A. M. A.
700 1 $aMARCILIO, V. A.
700 1 $aBRUGNERA, F. A.
700 1 $aLEITE, V. P. D.
700 1 $aCOSTA, R. S. C. da
773 $tAmerican Journal of Plant Sciences$gv. 8, p. 3399-3413, 2017.
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Registro original: |
Embrapa Rondônia (CPAF-RO) |
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