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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
15/05/2000 |
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Data da última atualização: |
15/05/2000 |
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Autoria: |
DANTAS, A. C. de M.; DUTRA, L. F.; KERSTEN, E. |
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Afiliação: |
Universidade Federal de Pelotas. |
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Título: |
Influencia do acido indolbutirico e etefon no enraizamento de estacas herbaceas |
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Ano de publicação: |
1999 |
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Fonte/Imprenta: |
Revista Cientifica Rural, v.4, n.2, p.29-33, URCAMP, Bage, RS, 1999 |
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ISSN: |
1413-8263 |
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Idioma: |
Português |
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Conteúdo: |
O experimento foi instalado em estufa com sistema de nebulizacao intermitente do Departamento de Fitotecnia, Faculdade de Agronomia Eliseu Maciel, Universidade Federal de Pelotas, para verificar o efeito do AIB (acido indolbutirico) e do etefon (acido 2-cloroetilfosfonico) no enraizamento de estacas de goiabeira. Coletou-se ramos em crescimento, e destes, estacas da porcao mediana, com dois nos e um par de folhas. Posteriormente estas foram tratadas com AIB nas concentracoes de 0;1000;2000;3000 e 4000,g.l-1, com imersao de 5 segundos e acondicionadas em sacos contendo vermiculita. Apos 16 horas, foram pulverizadas com etefon nas concentracoes de 0;25;50;75 e 100mg.l-1. Decorridos 60 dias de permanencia na estufa, observou-se que o AIB aumentou o percentual de enraizamento ate a concentracao de 1410,56mg.l-1 com 35,57% de estacas enraizadas e aumentou linearmente o numero de raizes. O etefon nao mostrou efeito na percentagem de estacas enraizadas, numero e peso da materia seca de raizes e persistencia de folhas. |
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Palavras-Chave: |
Growth regulatores; Guava; Propagacao; Propagation; Reguladores de crescimento. |
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Thesagro: |
Goiaba. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01663naa a2200229 a 4500
001 1635691
005 2000-05-15
008 1999 bl uuuu u00u1 u #d
022 $a1413-8263
100 1 $aDANTAS, A. C. de M.
245 $aInfluencia do acido indolbutirico e etefon no enraizamento de estacas herbaceas
260 $c1999
520 $aO experimento foi instalado em estufa com sistema de nebulizacao intermitente do Departamento de Fitotecnia, Faculdade de Agronomia Eliseu Maciel, Universidade Federal de Pelotas, para verificar o efeito do AIB (acido indolbutirico) e do etefon (acido 2-cloroetilfosfonico) no enraizamento de estacas de goiabeira. Coletou-se ramos em crescimento, e destes, estacas da porcao mediana, com dois nos e um par de folhas. Posteriormente estas foram tratadas com AIB nas concentracoes de 0;1000;2000;3000 e 4000,g.l-1, com imersao de 5 segundos e acondicionadas em sacos contendo vermiculita. Apos 16 horas, foram pulverizadas com etefon nas concentracoes de 0;25;50;75 e 100mg.l-1. Decorridos 60 dias de permanencia na estufa, observou-se que o AIB aumentou o percentual de enraizamento ate a concentracao de 1410,56mg.l-1 com 35,57% de estacas enraizadas e aumentou linearmente o numero de raizes. O etefon nao mostrou efeito na percentagem de estacas enraizadas, numero e peso da materia seca de raizes e persistencia de folhas.
650 $aGoiaba
653 $aGrowth regulatores
653 $aGuava
653 $aPropagacao
653 $aPropagation
653 $aReguladores de crescimento
700 1 $aDUTRA, L. F.
700 1 $aKERSTEN, E.
773 $tRevista Cientifica Rural$gv.4, n.2, p.29-33, URCAMP, Bage, RS, 1999
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Corte. Para informações adicionais entre em contato com cnpgc.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Gado de Corte. |
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Data corrente: |
30/03/2011 |
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Data da última atualização: |
03/05/2011 |
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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: |
SOUZA-KANESHIMA, A. M. de; SIMIONI, C.; FELISMINO, M. F.; MENDES-BONATO, A. B.; RISSO-PASCOTTO, C.; PESSIM, C.; PAGLIARINI, M. S.; VALLE, C. B. do. |
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Afiliação: |
A. M. DE SOUZA-KANESHIMA, Department of Cell Biology and Genetics, State University of Maringa´ , 87020-900 Maringa´ PR; C. SIMIONI, Department of Forage Plants, Federal University of Rio Grande do Sul, 91501-970 Porto Alegre RS; M. F. FELISMINO, Department of Cell Biology and Genetics, State University of Maringá , 87020-900 Maringá PR; A. B. MENDES-BONATO, Department of Cell Biology and Genetics, State University of Maringá , 87020-900 Maringá, PR; C. RISSO-PASCOTTO, Department of Cell Biology and Genetics, State University of Maringá , 87020-900 Maringá PR; C. PESSIM, Department of Cell Biology and Genetics, State University of Maringá , 87020-900 Maringá PR; M. S. PAGLIARINI, Department of Cell Biology and Genetics, State University of Maringá, 87020-900 Maringá, PR; CACILDA BORGES DO VALLE, CNPGC. |
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Título: |
Meiotic behaviour in the first interspecific hybrids between Brachiaria brizantha and Brachiaria decumbens. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
Plant Breeding, v. 129, n. 2, p. 186-191, 2010. |
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Idioma: |
Inglês |
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Conteúdo: |
Brachiaria brizantha and Brachiaria decumbens constitute the two most widely used tropical forage species for cultivated pastures and support both beef and dairy cattle production in the tropics. Two apomictic cultivars ? B. brizantha cv. Marandu and B. decumbens cv. Basilisk ? cover more than 100 million hectares of cultivated pastures throughout Latin America and Southeast Asia. This paper discusses the cytogenetic data of the first successful attempt in obtaining interspecific hybrids between these two species. Artificial hybridization between two diploid (2n = 2x = 18) sexual accessions (B. brizantha, B105 · B. decumbens, D004) was performed in the greenhouse. Only
three hybrids were recovered. One of them was treated with colchicine in tissue culture and two amphidiploid plants were obtained. Meiosis in the diploid genitors was quite normal, while in the diploid hybrid parental genome separation was observed together with some irregular chromosome segregation. Genome separation was also observed in several cells in the two 4n amphidiploid hybrids. In these, a high number of meiocytes with chromosomes chaotically spread in the cytoplasm was recorded during meiosis. The abnormalities observed compromised the meiotic products characterized by polyads. Chromosomes associated generally as bivalents but some association as quadrivalents in diakinesis in one of the amphidiploid hybrids indicates taxonomic proximity between these two species. Moreover, it indicates that introgression of desirable genes may be feasible between these two most important agronomic species of the genus. MenosBrachiaria brizantha and Brachiaria decumbens constitute the two most widely used tropical forage species for cultivated pastures and support both beef and dairy cattle production in the tropics. Two apomictic cultivars ? B. brizantha cv. Marandu and B. decumbens cv. Basilisk ? cover more than 100 million hectares of cultivated pastures throughout Latin America and Southeast Asia. This paper discusses the cytogenetic data of the first successful attempt in obtaining interspecific hybrids between these two species. Artificial hybridization between two diploid (2n = 2x = 18) sexual accessions (B. brizantha, B105 · B. decumbens, D004) was performed in the greenhouse. Only
three hybrids were recovered. One of them was treated with colchicine in tissue culture and two amphidiploid plants were obtained. Meiosis in the diploid genitors was quite normal, while in the diploid hybrid parental genome separation was observed together with some irregular chromosome segregation. Genome separation was also observed in several cells in the two 4n amphidiploid hybrids. In these, a high number of meiocytes with chromosomes chaotically spread in the cytoplasm was recorded during meiosis. The abnormalities observed compromised the meiotic products characterized by polyads. Chromosomes associated generally as bivalents but some association as quadrivalents in diakinesis in one of the amphidiploid hybrids indicates taxonomic proximity between these two species. Moreover, it indicates that introgr... Mostrar Tudo |
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Palavras-Chave: |
Chaotic spindle; Duplicação de cromossomos; Híbridos interespecíficos. |
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Thesagro: |
Brachiaria Brizantha; Brachiaria Decumbens; Meiose. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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Marc: |
LEADER 02439naa a2200277 a 4500
001 1883907
005 2011-05-03
008 2010 bl --- 0-- u #d
100 1 $aSOUZA-KANESHIMA, A. M. de
245 $aMeiotic behaviour in the first interspecific hybrids between Brachiaria brizantha and Brachiaria decumbens.
260 $c2010
520 $aBrachiaria brizantha and Brachiaria decumbens constitute the two most widely used tropical forage species for cultivated pastures and support both beef and dairy cattle production in the tropics. Two apomictic cultivars ? B. brizantha cv. Marandu and B. decumbens cv. Basilisk ? cover more than 100 million hectares of cultivated pastures throughout Latin America and Southeast Asia. This paper discusses the cytogenetic data of the first successful attempt in obtaining interspecific hybrids between these two species. Artificial hybridization between two diploid (2n = 2x = 18) sexual accessions (B. brizantha, B105 · B. decumbens, D004) was performed in the greenhouse. Only three hybrids were recovered. One of them was treated with colchicine in tissue culture and two amphidiploid plants were obtained. Meiosis in the diploid genitors was quite normal, while in the diploid hybrid parental genome separation was observed together with some irregular chromosome segregation. Genome separation was also observed in several cells in the two 4n amphidiploid hybrids. In these, a high number of meiocytes with chromosomes chaotically spread in the cytoplasm was recorded during meiosis. The abnormalities observed compromised the meiotic products characterized by polyads. Chromosomes associated generally as bivalents but some association as quadrivalents in diakinesis in one of the amphidiploid hybrids indicates taxonomic proximity between these two species. Moreover, it indicates that introgression of desirable genes may be feasible between these two most important agronomic species of the genus.
650 $aBrachiaria Brizantha
650 $aBrachiaria Decumbens
650 $aMeiose
653 $aChaotic spindle
653 $aDuplicação de cromossomos
653 $aHíbridos interespecíficos
700 1 $aSIMIONI, C.
700 1 $aFELISMINO, M. F.
700 1 $aMENDES-BONATO, A. B.
700 1 $aRISSO-PASCOTTO, C.
700 1 $aPESSIM, C.
700 1 $aPAGLIARINI, M. S.
700 1 $aVALLE, C. B. do
773 $tPlant Breeding$gv. 129, n. 2, p. 186-191, 2010.
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