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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
08/03/2010 |
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Data da última atualização: |
08/03/2010 |
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Autoria: |
AUAD, A. M. ; CARVALHO, C. A. de; SILVA, D. M. da; DERESZ, F. |
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Título: |
Flutuação populacional de cigarrinhas-das-pastagens em braquiária e capim-elefante. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, v. 44, n. 9, p. 1205-1208, set. 2009. |
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Idioma: |
Português |
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Conteúdo: |
O objetivo deste trabalho foi avaliar a flutuação populacional de cigarrinhas-das-pastagens em Brachiaria brizantha, Brachiaria decumbens e Pennisetum purpureum. As avaliações foram realizadas em campo, entre setembro de 2005 e março de 2007. Ninfas e adultos de cigarrinhas-das-pastagens foram contabilizados em: B. brizantha cultivares Marandu, Xaraés e Arapoti, submetidas a rodízios de carga animal; em B. decumbens, em sistema silvipastoril; e em 78 genótipos de P. purpureum. A densidade populacional de Deois schach, na cultivar Arapoti, foi superior à de Xaraés e de Marandu. Em B. decumbens, o número de cigarrinhas-das-pastagens foi quatro vezes maior que em B. brizantha. Não foram observadas diferenças significativas no número de cigarrinhas-das-pastagens nos diferentes genótipos de P. purpureum. |
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Palavras-Chave: |
Brachiaria brizantha; Brachiaria decumbens; Cercopidae; Penisetum purpureum; Praga de planta; Resistência à praga. |
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Categoria do assunto: |
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Marc: |
LEADER 01517naa a2200229 a 4500
001 1068024
005 2010-03-08
008 2009 bl uuuu u00u1 u #d
100 1 $aAUAD, A. M.
245 $aFlutuação populacional de cigarrinhas-das-pastagens em braquiária e capim-elefante.
260 $c2009
520 $aO objetivo deste trabalho foi avaliar a flutuação populacional de cigarrinhas-das-pastagens em Brachiaria brizantha, Brachiaria decumbens e Pennisetum purpureum. As avaliações foram realizadas em campo, entre setembro de 2005 e março de 2007. Ninfas e adultos de cigarrinhas-das-pastagens foram contabilizados em: B. brizantha cultivares Marandu, Xaraés e Arapoti, submetidas a rodízios de carga animal; em B. decumbens, em sistema silvipastoril; e em 78 genótipos de P. purpureum. A densidade populacional de Deois schach, na cultivar Arapoti, foi superior à de Xaraés e de Marandu. Em B. decumbens, o número de cigarrinhas-das-pastagens foi quatro vezes maior que em B. brizantha. Não foram observadas diferenças significativas no número de cigarrinhas-das-pastagens nos diferentes genótipos de P. purpureum.
653 $aBrachiaria brizantha
653 $aBrachiaria decumbens
653 $aCercopidae
653 $aPenisetum purpureum
653 $aPraga de planta
653 $aResistência à praga
700 1 $aCARVALHO, C. A. de
700 1 $aSILVA, D. M. da
700 1 $aDERESZ, F.
773 $tPesquisa Agropecuária Brasileira, Brasília$gv. 44, n. 9, p. 1205-1208, set. 2009.
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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
27/03/2012 |
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Data da última atualização: |
27/03/2012 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Circulação/Nível: |
-- - -- |
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Autoria: |
DALAGNOL, G. L.; MARIOT, A.; BROSE, E.; REIS, M. S.; NODARI, R. O. |
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Afiliação: |
Epagri |
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Título: |
Genetic characterization of Bromus auleticus Trinius accesses through allozymic and RAPDs markers. |
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Ano de publicação: |
2000 |
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Fonte/Imprenta: |
In: CONGRESSO NACIONAL DE GENÉTICA, 46., 2000, Aguas de Lindoia, SP. [Proceedings...]. Ribeirao Preto, SP: Sociedade Brasileira de Genetica, 2000. p. 538-539. |
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ISSN: |
1415-4757 |
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Idioma: |
Inglês |
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Conteúdo: |
The natural fields of the South of Brazil come along the years. serving as alimentary base for the cattle. However, this natural resource are not appropriately managed for its better conservation. The Bromus aufeticus Trinius is a perennial native species that is part of this ecosystem and it has been showing potential for good forage and quality. It is a characteristic plant of the Southern plateau of Brazil, with wide, but discontinuous dispersion, with few indívíduos and seemingly, it adapts in environments with some soil limitations. The improvement of this species could allow its cultivation not only in natural habitats but also in areas already degraded by the agricultural activity or excessive grazzing, providing great forage volume with considerable nutritional value. The objective of this work was to characterize the genetic variability among Bromus auleticus accesses existent in the Experimental Station of Lages (EPAGRI S.A.) through of allozymic and RAPD rnarkers.The allozymic analyses were made through elec¬trophoresis in starch gel of maize penetrose (13%), using nine enzymatic systems: PCI, SKDH, IDH, PRX-1, PRX-2, PRX-3, PRX-4, PRX-5, NADHDH, MDH-1, MDH-2, MDH-3, PGM, 6PGDH and a-EST with tris-citrate buffer pH 7.5. The RAPD analysis was accomplished by PCR reactions with 1 U of Taq DNA Polimerase, 1.5 mM of MgCI2, 0.22 dNTPs mM, 0.6 primer mM and 9 ng of genomic DNA, in a final volume of 13 µl. The reactions were submitted to 92oC by one minute, 35oC for one minute, 72oC for two minutes, being this cycle repeated 39 times. One more cycle of 72oC for 5 minutes, for complementation of the reaction were performed afterwards. The enzymatic analysis detected 15 apparent loci with 73.3 % of polymorphic loci and average of 2.1 alleles for loci. The observed heterozigosity was 0.345 and the expected was 0.340. In comparison with other species, the levei found can be considered high. To evaluate the amplification quality and the polymorphism with RAPD markers, 44 primers were tested. From them, 13 (29.5%) amplified visible fragments, revealing 67 bands, 34 of wich were polymorphic. The average of polymorphic bands for each polymorphic primer was 2.61. Eleven Bromus auleticus accesses were evaluated with 7 primers, wich detected 44 bands, of the which 27 were polymorphic. The analyses of genetic similarity were made with BIOSYS-1 and NTSYS programs, using Nei's coefficient (1978) and [accard, for isozymes and RAPD, respectively. In the dendrogram similar genetic groups can be distinguished. RAPDs markers, when compared with isozymes presented larger capacity of polymorphism detection. The high level of genetic variability exhibited by the accesses and it characterization will facilitate the parentaI choosing for the species improvement program, with maintenance of a wide genetic base. Support financial: EPAGRI S. A. /UFSC. MenosThe natural fields of the South of Brazil come along the years. serving as alimentary base for the cattle. However, this natural resource are not appropriately managed for its better conservation. The Bromus aufeticus Trinius is a perennial native species that is part of this ecosystem and it has been showing potential for good forage and quality. It is a characteristic plant of the Southern plateau of Brazil, with wide, but discontinuous dispersion, with few indívíduos and seemingly, it adapts in environments with some soil limitations. The improvement of this species could allow its cultivation not only in natural habitats but also in areas already degraded by the agricultural activity or excessive grazzing, providing great forage volume with considerable nutritional value. The objective of this work was to characterize the genetic variability among Bromus auleticus accesses existent in the Experimental Station of Lages (EPAGRI S.A.) through of allozymic and RAPD rnarkers.The allozymic analyses were made through elec¬trophoresis in starch gel of maize penetrose (13%), using nine enzymatic systems: PCI, SKDH, IDH, PRX-1, PRX-2, PRX-3, PRX-4, PRX-5, NADHDH, MDH-1, MDH-2, MDH-3, PGM, 6PGDH and a-EST with tris-citrate buffer pH 7.5. The RAPD analysis was accomplished by PCR reactions with 1 U of Taq DNA Polimerase, 1.5 mM of MgCI2, 0.22 dNTPs mM, 0.6 primer mM and 9 ng of genomic DNA, in a final volume of 13 µl. The reactions were submitted to 92oC by one minute, 35oC for one ... Mostrar Tudo |
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Palavras-Chave: |
Genetic similarity; Heterozigosity; Polymorphic loci. |
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Categoria do assunto: |
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Marc: |
LEADER 03483naa a2200169 a 4500
001 1084130
005 2012-03-27
008 2000 bl uuuu u00u1 u #d
022 $a1415-4757
100 1 $aEpagri
245 $aGenetic characterization of Bromus auleticus Trinius accesses through allozymic and RAPDs markers.
260 $c2000
520 $aThe natural fields of the South of Brazil come along the years. serving as alimentary base for the cattle. However, this natural resource are not appropriately managed for its better conservation. The Bromus aufeticus Trinius is a perennial native species that is part of this ecosystem and it has been showing potential for good forage and quality. It is a characteristic plant of the Southern plateau of Brazil, with wide, but discontinuous dispersion, with few indívíduos and seemingly, it adapts in environments with some soil limitations. The improvement of this species could allow its cultivation not only in natural habitats but also in areas already degraded by the agricultural activity or excessive grazzing, providing great forage volume with considerable nutritional value. The objective of this work was to characterize the genetic variability among Bromus auleticus accesses existent in the Experimental Station of Lages (EPAGRI S.A.) through of allozymic and RAPD rnarkers.The allozymic analyses were made through elec¬trophoresis in starch gel of maize penetrose (13%), using nine enzymatic systems: PCI, SKDH, IDH, PRX-1, PRX-2, PRX-3, PRX-4, PRX-5, NADHDH, MDH-1, MDH-2, MDH-3, PGM, 6PGDH and a-EST with tris-citrate buffer pH 7.5. The RAPD analysis was accomplished by PCR reactions with 1 U of Taq DNA Polimerase, 1.5 mM of MgCI2, 0.22 dNTPs mM, 0.6 primer mM and 9 ng of genomic DNA, in a final volume of 13 µl. The reactions were submitted to 92oC by one minute, 35oC for one minute, 72oC for two minutes, being this cycle repeated 39 times. One more cycle of 72oC for 5 minutes, for complementation of the reaction were performed afterwards. The enzymatic analysis detected 15 apparent loci with 73.3 % of polymorphic loci and average of 2.1 alleles for loci. The observed heterozigosity was 0.345 and the expected was 0.340. In comparison with other species, the levei found can be considered high. To evaluate the amplification quality and the polymorphism with RAPD markers, 44 primers were tested. From them, 13 (29.5%) amplified visible fragments, revealing 67 bands, 34 of wich were polymorphic. The average of polymorphic bands for each polymorphic primer was 2.61. Eleven Bromus auleticus accesses were evaluated with 7 primers, wich detected 44 bands, of the which 27 were polymorphic. The analyses of genetic similarity were made with BIOSYS-1 and NTSYS programs, using Nei's coefficient (1978) and [accard, for isozymes and RAPD, respectively. In the dendrogram similar genetic groups can be distinguished. RAPDs markers, when compared with isozymes presented larger capacity of polymorphism detection. The high level of genetic variability exhibited by the accesses and it characterization will facilitate the parentaI choosing for the species improvement program, with maintenance of a wide genetic base. Support financial: EPAGRI S. A. /UFSC.
653 $aGenetic similarity
653 $aHeterozigosity
653 $aPolymorphic loci
773 $tIn: CONGRESSO NACIONAL DE GENÉTICA, 46., 2000, Aguas de Lindoia, SP. [Proceedings...]. Ribeirao Preto, SP: Sociedade Brasileira de Genetica, 2000. p. 538-539.
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