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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
14/10/2008 |
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Data da última atualização: |
19/02/2009 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
DITA, M.; ALVES, A.; SILVA, A.; BELLOTTI, A.; FREGENE, M. |
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Afiliação: |
Miguel Angel Dita, CNPMF; Alfredo Augusto Cunha Alves, CNPMF; Aline Silva, CPATSA; Anthony Bellotti, CIAT; Martin Fregene, CIAT. |
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Título: |
Evaluation of cassava interspecific hybrids for disease resistance. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
In: SCIENTIFIC MEETING OF THE GLOBAL CASSAVA PARTNERSHIP, 1., 2008, Ghent. Cassava: meeting the challenges of the new millennium. Ghent:: IPBO, 2008. p. 146. |
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Idioma: |
Inglês |
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Notas: |
SP10-03. |
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Conteúdo: |
Interspecific hybrids from crosses between elite cassava varieties and wild relatives of M. tristis, M. flabellifolia amd M. peruviana were assessed for disease resistance in different regions of Brazil. Seedlings of several families planted in Sao Miguel das Matas (SMM) , Tancredo Neves (TN), Cruz das Almas (CA) in the Bahia State, and in Petrolina (PT), Pernambuco State were evaluated for disease resistance from 6 to 12 months after planting. In Bahia the incidence of anthracnose, brown leaf spot (BLS), rust, diffuse leaf spot and white leaf spot was registered. In Petrolina only sporadic lesions of BLS were found. Anthracnose, BLS and rust, in this order, were the most severe diseases in Bahia. Genotypes susceptible to anthracnose showed intense die-back and high level of defoliation. Similary, in genotypes highly susceptible to BLS complete defoliation was observed. Respect rust, although some genotypes reached the highest class of the scale, disease intensity was lower, when compared to anthracnose and BLS, respectively. Regardless of the evaluation sites in Bahia, high variation in the resistance levels inter-and intra-families was observed. Most of the genotypes with high levels of resistance to anthracnose and BLS were found in progenies involving M. tristis. For rust, however, higher numbers of resistant hybrids had M. flabellifollia as parent. In crosses involving M. peruviana, only resistance to rust was recorded. The resistant hybrids identified are promising genotypes, not only for the introgression of resistance traits into elite varieties, but also to understanding the genetic basis of resistance to diseases. MenosInterspecific hybrids from crosses between elite cassava varieties and wild relatives of M. tristis, M. flabellifolia amd M. peruviana were assessed for disease resistance in different regions of Brazil. Seedlings of several families planted in Sao Miguel das Matas (SMM) , Tancredo Neves (TN), Cruz das Almas (CA) in the Bahia State, and in Petrolina (PT), Pernambuco State were evaluated for disease resistance from 6 to 12 months after planting. In Bahia the incidence of anthracnose, brown leaf spot (BLS), rust, diffuse leaf spot and white leaf spot was registered. In Petrolina only sporadic lesions of BLS were found. Anthracnose, BLS and rust, in this order, were the most severe diseases in Bahia. Genotypes susceptible to anthracnose showed intense die-back and high level of defoliation. Similary, in genotypes highly susceptible to BLS complete defoliation was observed. Respect rust, although some genotypes reached the highest class of the scale, disease intensity was lower, when compared to anthracnose and BLS, respectively. Regardless of the evaluation sites in Bahia, high variation in the resistance levels inter-and intra-families was observed. Most of the genotypes with high levels of resistance to anthracnose and BLS were found in progenies involving M. tristis. For rust, however, higher numbers of resistant hybrids had M. flabellifollia as parent. In crosses involving M. peruviana, only resistance to rust was recorded. The resistant hybrids identified are promising gen... Mostrar Tudo |
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Categoria do assunto: |
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Marc: |
LEADER 02228naa a2200181 a 4500
001 1637979
005 2009-02-19
008 2008 bl uuuu u00u1 u #d
100 1 $aDITA, M.
245 $aEvaluation of cassava interspecific hybrids for disease resistance.
260 $c2008
500 $aSP10-03.
520 $aInterspecific hybrids from crosses between elite cassava varieties and wild relatives of M. tristis, M. flabellifolia amd M. peruviana were assessed for disease resistance in different regions of Brazil. Seedlings of several families planted in Sao Miguel das Matas (SMM) , Tancredo Neves (TN), Cruz das Almas (CA) in the Bahia State, and in Petrolina (PT), Pernambuco State were evaluated for disease resistance from 6 to 12 months after planting. In Bahia the incidence of anthracnose, brown leaf spot (BLS), rust, diffuse leaf spot and white leaf spot was registered. In Petrolina only sporadic lesions of BLS were found. Anthracnose, BLS and rust, in this order, were the most severe diseases in Bahia. Genotypes susceptible to anthracnose showed intense die-back and high level of defoliation. Similary, in genotypes highly susceptible to BLS complete defoliation was observed. Respect rust, although some genotypes reached the highest class of the scale, disease intensity was lower, when compared to anthracnose and BLS, respectively. Regardless of the evaluation sites in Bahia, high variation in the resistance levels inter-and intra-families was observed. Most of the genotypes with high levels of resistance to anthracnose and BLS were found in progenies involving M. tristis. For rust, however, higher numbers of resistant hybrids had M. flabellifollia as parent. In crosses involving M. peruviana, only resistance to rust was recorded. The resistant hybrids identified are promising genotypes, not only for the introgression of resistance traits into elite varieties, but also to understanding the genetic basis of resistance to diseases.
700 1 $aALVES, A.
700 1 $aSILVA, A.
700 1 $aBELLOTTI, A.
700 1 $aFREGENE, M.
773 $tIn: SCIENTIFIC MEETING OF THE GLOBAL CASSAVA PARTNERSHIP, 1., 2008, Ghent. Cassava: meeting the challenges of the new millennium. Ghent:: IPBO, 2008. p. 146.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Arroz e Feijão. Para informações adicionais entre em contato com cnpaf.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
16/04/2009 |
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Data da última atualização: |
01/10/2010 |
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Autoria: |
CUNHA, C. A. da; WANDER, A. E. |
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Afiliação: |
CLEYZER ADRIAN DA CUNHA, Universidade Federal de Goiás; ALCIDO ELENOR WANDER, CNPAF. |
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Título: |
STAR unit root test e os preços da cana-de-açúcar no Brasil: evidências empíricas não lineares. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
Goiânia: UFG, 2009. |
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Páginas: |
9 p. |
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Série: |
(UFG. Textos para Discussão do Curso de Ciências Econômicas, 1). |
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Idioma: |
Português |
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Conteúdo: |
Os modelos empíricos de análise de não estacionariedade vis-à-vis à estacionariedade têm sido bastante estudados nas séries temporais. Todavia, essa mesma literatura tem examinado essas questões em modelos lineares, desconsiderando qualquer possibilidade de não linearidades no comportamento das séries. Assim, este trabalho investigou o comportamento da série de preços de cana de açúcar aplicando o teste de raiz unitária não linear KSS (Smooth Transition Autoregressive - STAR) desenvolvido por KAPETANIOS, SHIN e SNELL (2003). |
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Palavras-Chave: |
Cana-de-açúcar; Teste de raiz unitária não linear. |
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Thesagro: |
Economia; Preço. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01139nam a2200193 a 4500
001 1215905
005 2010-10-01
008 2009 bl uuuu u0uu1 u #d
100 1 $aCUNHA, C. A. da
245 $aSTAR unit root test e os preços da cana-de-açúcar no Brasil$bevidências empíricas não lineares.
260 $aGoiânia: UFG$c2009
300 $a9 p.
490 $a(UFG. Textos para Discussão do Curso de Ciências Econômicas, 1).
520 $aOs modelos empíricos de análise de não estacionariedade vis-à-vis à estacionariedade têm sido bastante estudados nas séries temporais. Todavia, essa mesma literatura tem examinado essas questões em modelos lineares, desconsiderando qualquer possibilidade de não linearidades no comportamento das séries. Assim, este trabalho investigou o comportamento da série de preços de cana de açúcar aplicando o teste de raiz unitária não linear KSS (Smooth Transition Autoregressive - STAR) desenvolvido por KAPETANIOS, SHIN e SNELL (2003).
650 $aEconomia
650 $aPreço
653 $aCana-de-açúcar
653 $aTeste de raiz unitária não linear
700 1 $aWANDER, A. E.
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Embrapa Arroz e Feijão (CNPAF) |
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