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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Ocidental. |
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Data corrente: |
12/04/2000 |
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Data da última atualização: |
25/01/2007 |
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Autoria: |
MENDONÇA, M. S. de; BROCK, E.; AGUIAR, M. O. |
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Afiliação: |
UA; UTAM. |
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Título: |
A epiderme foliar do caiaué (Elaeis oleifera (Kunth) Cortes). |
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Ano de publicação: |
1997 |
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Fonte/Imprenta: |
Revista da Universidade do Amazonas. Serie: Ciencias Agrarias, Manaus, v.6, n.1/2, p.37-44, jan./dez. 1997. |
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Idioma: |
Português |
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Conteúdo: |
Foram analisados cortes em microtomo e dissociacoes de epidermes, ambos corados com Astrablau e Fucsina basica. As contagens de estomatos e pelos foram efetuadas considerando trinta campos para cada individuo. As celulas das epidermes abaxial e adaxial encontram-se enfileiradas, apresentando paredes celulares delgadas, retas e com pontuacoes. A folha e anfiestomatica, com estomatos tetraciticos, encontrando-se pelos em ambas as faces do foliolo. Nao houve diferenca significativa entre a frequencia media de estomatos do apice e da base. Houve diferenca significativa na frequencia media de pelos comparando-se foliolos do apice e da base e as faces abaxial e adaxial. |
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Palavras-Chave: |
Amazonas; Brasil; Manaus. |
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Thesagro: |
Caiaué; Elaeis Oleifera; Folha. |
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Thesaurus Nal: |
leaves. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01299naa a2200229 a 4500
001 1668751
005 2007-01-25
008 1997 bl uuuu u00u1 u #d
100 1 $aMENDONÇA, M. S. de
245 $aA epiderme foliar do caiaué (Elaeis oleifera (Kunth) Cortes).
260 $c1997
520 $aForam analisados cortes em microtomo e dissociacoes de epidermes, ambos corados com Astrablau e Fucsina basica. As contagens de estomatos e pelos foram efetuadas considerando trinta campos para cada individuo. As celulas das epidermes abaxial e adaxial encontram-se enfileiradas, apresentando paredes celulares delgadas, retas e com pontuacoes. A folha e anfiestomatica, com estomatos tetraciticos, encontrando-se pelos em ambas as faces do foliolo. Nao houve diferenca significativa entre a frequencia media de estomatos do apice e da base. Houve diferenca significativa na frequencia media de pelos comparando-se foliolos do apice e da base e as faces abaxial e adaxial.
650 $aleaves
650 $aCaiaué
650 $aElaeis Oleifera
650 $aFolha
653 $aAmazonas
653 $aBrasil
653 $aManaus
700 1 $aBROCK, E.
700 1 $aAGUIAR, M. O.
773 $tRevista da Universidade do Amazonas. Serie: Ciencias Agrarias, Manaus$gv.6, n.1/2, p.37-44, jan./dez. 1997.
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Registro original: |
Embrapa Amazônia Ocidental (CPAA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
01/10/2012 |
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Data da última atualização: |
07/07/2023 |
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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: |
CARVALHO, F. C. Q.; SANTOS, L. A.; DIAS, R. de C. S.; MARIANO, R. L. R.; SOUZA, E. B. |
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Afiliação: |
FRANCISCO C. Q. CARVALHO, UFRPE; LILIANA A. SANTOS, UFRPE; RITA DE CASSIA SOUZA DIAS, CPATSA; ROSA L. R. MARIANO, UFRPE; ELINEIDE B. SOUZA, UFRPE. |
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Título: |
Selection of watermelon genotypes for resistance to bacterial fruit blotch. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Euphytica, v. 190, p. 169-180, jul. 2012. |
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DOI: |
10.1007/s10681-012-0766-1 |
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Idioma: |
Inglês |
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Conteúdo: |
Bacterial fruit blotch, caused by Acidovorax citrulli, is a serious threat to the watermelon crop in Brazil. To date, there are no disease-resistant varieties, thus requiring research seeking sources of resistance. To select genotypes with potential use in the management of fruit blotch, the resistance level of watermelon genotypes belonging to the Cucurbits Germplasm Active Bank for the Brazilian Northeast (Banco Ativo de Germoplasma de Cucurbita·ceas para o Nordeste Brasileiro—BAG) of Embrapa Semia·rido was evaluated at different plant developmental stages: seeds (74 genotypes), seedlings and plants before flowering (29 genotypes) as well as plants during flowering and fruiting (seven genotypes). The genotypes were evaluated for the incidence or severity of the disease, which was estimated with the aid of descriptive scales. Additionally, A. citrulli transmission was determined in seeds derived from symptomatic and asymptomatic fruits. No watermelon genotype was immune to fruit blotch, and the majority showed variations in resistance responses. However, the genotypes BGCIA 979, BGCIA 34 and Sugar Baby showed high levels of resistance at most stages of plant development, thereby suggesting that these genotypes possess fruit blotch resistance genes that could be used in breeding programs. Seeds from symptomatic and asymptomatic fruits of the seven tested genotypes showed transmission rates of A. citrulli up to 35.3 % and 8.7 %, respectively. These results confirm that asymptomatic fruits can harbor contaminated seeds that are responsible for the transmission of the bacteria. MenosBacterial fruit blotch, caused by Acidovorax citrulli, is a serious threat to the watermelon crop in Brazil. To date, there are no disease-resistant varieties, thus requiring research seeking sources of resistance. To select genotypes with potential use in the management of fruit blotch, the resistance level of watermelon genotypes belonging to the Cucurbits Germplasm Active Bank for the Brazilian Northeast (Banco Ativo de Germoplasma de Cucurbita·ceas para o Nordeste Brasileiro—BAG) of Embrapa Semia·rido was evaluated at different plant developmental stages: seeds (74 genotypes), seedlings and plants before flowering (29 genotypes) as well as plants during flowering and fruiting (seven genotypes). The genotypes were evaluated for the incidence or severity of the disease, which was estimated with the aid of descriptive scales. Additionally, A. citrulli transmission was determined in seeds derived from symptomatic and asymptomatic fruits. No watermelon genotype was immune to fruit blotch, and the majority showed variations in resistance responses. However, the genotypes BGCIA 979, BGCIA 34 and Sugar Baby showed high levels of resistance at most stages of plant development, thereby suggesting that these genotypes possess fruit blotch resistance genes that could be used in breeding programs. Seeds from symptomatic and asymptomatic fruits of the seven tested genotypes showed transmission rates of A. citrulli up to 35.3 % and 8.7 %, respectively. These results confirm that asympt... Mostrar Tudo |
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Palavras-Chave: |
Acidovorax citrulli; Pré-melhoramento; Transmissão de sementes. |
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Thesagro: |
Citrullus Lanatus; Cucurbitaceae; Doença; Genótipo; Mancha Bacteriana; Melancia; Resistência; Resistência Genética. |
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Thesaurus NAL: |
Genetic resistance; Watermelons. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/935123/1/Selection-of-watermelon-genotypes-for-resistance-to-bacterial-fruit-blotch-2013.pdf
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Marc: |
LEADER 02539naa a2200337 a 4500
001 1935123
005 2023-07-07
008 2012 bl uuuu u00u1 u #d
024 7 $a10.1007/s10681-012-0766-1$2DOI
100 1 $aCARVALHO, F. C. Q.
245 $aSelection of watermelon genotypes for resistance to bacterial fruit blotch.
260 $c2012
520 $aBacterial fruit blotch, caused by Acidovorax citrulli, is a serious threat to the watermelon crop in Brazil. To date, there are no disease-resistant varieties, thus requiring research seeking sources of resistance. To select genotypes with potential use in the management of fruit blotch, the resistance level of watermelon genotypes belonging to the Cucurbits Germplasm Active Bank for the Brazilian Northeast (Banco Ativo de Germoplasma de Cucurbita·ceas para o Nordeste Brasileiro—BAG) of Embrapa Semia·rido was evaluated at different plant developmental stages: seeds (74 genotypes), seedlings and plants before flowering (29 genotypes) as well as plants during flowering and fruiting (seven genotypes). The genotypes were evaluated for the incidence or severity of the disease, which was estimated with the aid of descriptive scales. Additionally, A. citrulli transmission was determined in seeds derived from symptomatic and asymptomatic fruits. No watermelon genotype was immune to fruit blotch, and the majority showed variations in resistance responses. However, the genotypes BGCIA 979, BGCIA 34 and Sugar Baby showed high levels of resistance at most stages of plant development, thereby suggesting that these genotypes possess fruit blotch resistance genes that could be used in breeding programs. Seeds from symptomatic and asymptomatic fruits of the seven tested genotypes showed transmission rates of A. citrulli up to 35.3 % and 8.7 %, respectively. These results confirm that asymptomatic fruits can harbor contaminated seeds that are responsible for the transmission of the bacteria.
650 $aGenetic resistance
650 $aWatermelons
650 $aCitrullus Lanatus
650 $aCucurbitaceae
650 $aDoença
650 $aGenótipo
650 $aMancha Bacteriana
650 $aMelancia
650 $aResistência
650 $aResistência Genética
653 $aAcidovorax citrulli
653 $aPré-melhoramento
653 $aTransmissão de sementes
700 1 $aSANTOS, L. A.
700 1 $aDIAS, R. de C. S.
700 1 $aMARIANO, R. L. R.
700 1 $aSOUZA, E. B.
773 $tEuphytica$gv. 190, p. 169-180, jul. 2012.
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Embrapa Semiárido (CPATSA) |
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