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Registro Completo |
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
25/02/2005 |
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Data da última atualização: |
19/04/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SANTOS, C. A. F.; SENALIK, D.; SIMON, P. W. |
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Afiliação: |
CARLOS ANTONIO FERNANDES SANTOS, CPATSA. |
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Título: |
Path analysis suggests phytoene accumulation is the key step limiting the carotenoid pathway in white carrot roots. |
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Ano de publicação: |
2005 |
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Fonte/Imprenta: |
Genetics and Molecular Biology, Ribeirão Preto, v. 28, n. 2, p. 287-293, 2005. |
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Idioma: |
Inglês |
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Conteúdo: |
Two F 2 carrot (Daucus carota L.) populations (orange rooted Brasilia x very dark orange rooted High Carotene Mass - HCM cross and the dark orange rooted cultivated variety B493 x white rooted wild carrot Queen Anne’s Lace - QAL cross) with very unrelated genetic backgrounds were used to investigate intrinsic factors limiting carotenoid accumulation in carrots by applying phenotypic correlation and path analysis to study the relationships between major root carotenes, root color and several other morphological traits. Most of the correlations between traits were close and agreed in sign between the two populations. Root weight had a moderate to highly significant positive correlation with leaf length, root length and top and middle root diameter. Although phenotypic correlations failed to identify the order of the substrates and products in the carotenoid pathway the correct order of substrates and products (phytoene zeta-carotene lycopene) was identified in the causal diagram of beta-carotene for the Brasilia x HCM population. Path analysis of beta-carotene synthesis in the B493 x QAL population suggested that selection for root carotenes had little effect on plant morphological traits. Causal model of beta-carotene and lycopene in the B493 x QAL population suggested that phytoene synthesis is the key step limiting the carotenoid pathway in white carrots. Path analysis, first presented by Sewall Wright to study quantitative traits, appears to be a powerful statistical approach for the identification of key compounds in complex pathways. MenosTwo F 2 carrot (Daucus carota L.) populations (orange rooted Brasilia x very dark orange rooted High Carotene Mass - HCM cross and the dark orange rooted cultivated variety B493 x white rooted wild carrot Queen Anne’s Lace - QAL cross) with very unrelated genetic backgrounds were used to investigate intrinsic factors limiting carotenoid accumulation in carrots by applying phenotypic correlation and path analysis to study the relationships between major root carotenes, root color and several other morphological traits. Most of the correlations between traits were close and agreed in sign between the two populations. Root weight had a moderate to highly significant positive correlation with leaf length, root length and top and middle root diameter. Although phenotypic correlations failed to identify the order of the substrates and products in the carotenoid pathway the correct order of substrates and products (phytoene zeta-carotene lycopene) was identified in the causal diagram of beta-carotene for the Brasilia x HCM population. Path analysis of beta-carotene synthesis in the B493 x QAL population suggested that selection for root carotenes had little effect on plant morphological traits. Causal model of beta-carotene and lycopene in the B493 x QAL population suggested that phytoene synthesis is the key step limiting the carotenoid pathway in white carrots. Path analysis, first presented by Sewall Wright to study quantitative traits, appears to be a powerful statistical appro... Mostrar Tudo |
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Palavras-Chave: |
Carrot; Correlação; Diagramação; Path diagram. |
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Thesagro: |
Cenoura; Daucus Carota; Engenharia Genética. |
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Thesaurus Nal: |
Genetic engineering. |
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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/item/162452/1/Carlos.pdf
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Marc: |
LEADER 02281naa a2200241 a 4500
001 1155473
005 2018-04-19
008 2005 bl uuuu u00u1 u #d
100 1 $aSANTOS, C. A. F.
245 $aPath analysis suggests phytoene accumulation is the key step limiting the carotenoid pathway in white carrot roots.
260 $c2005
520 $aTwo F 2 carrot (Daucus carota L.) populations (orange rooted Brasilia x very dark orange rooted High Carotene Mass - HCM cross and the dark orange rooted cultivated variety B493 x white rooted wild carrot Queen Anne’s Lace - QAL cross) with very unrelated genetic backgrounds were used to investigate intrinsic factors limiting carotenoid accumulation in carrots by applying phenotypic correlation and path analysis to study the relationships between major root carotenes, root color and several other morphological traits. Most of the correlations between traits were close and agreed in sign between the two populations. Root weight had a moderate to highly significant positive correlation with leaf length, root length and top and middle root diameter. Although phenotypic correlations failed to identify the order of the substrates and products in the carotenoid pathway the correct order of substrates and products (phytoene zeta-carotene lycopene) was identified in the causal diagram of beta-carotene for the Brasilia x HCM population. Path analysis of beta-carotene synthesis in the B493 x QAL population suggested that selection for root carotenes had little effect on plant morphological traits. Causal model of beta-carotene and lycopene in the B493 x QAL population suggested that phytoene synthesis is the key step limiting the carotenoid pathway in white carrots. Path analysis, first presented by Sewall Wright to study quantitative traits, appears to be a powerful statistical approach for the identification of key compounds in complex pathways.
650 $aGenetic engineering
650 $aCenoura
650 $aDaucus Carota
650 $aEngenharia Genética
653 $aCarrot
653 $aCorrelação
653 $aDiagramação
653 $aPath diagram
700 1 $aSENALIK, D.
700 1 $aSIMON, P. W.
773 $tGenetics and Molecular Biology, Ribeirão Preto$gv. 28, n. 2, p. 287-293, 2005.
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Registro original: |
Embrapa Semiárido (CPATSA) |
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Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
30/08/2018 |
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Data da última atualização: |
06/05/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
ZAFALON, L. F.; SANTANA, R. C. M.; ESTEVES, S. N.; FIM JÚNIOR, G. A. |
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Afiliação: |
LUIZ FRANCISCO ZAFALON, CPPSE; RAUL COSTA MASCARENHAS SANTANA, CPPSE; SERGIO NOVITA ESTEVES, CPPSE; Guilherme Aparecido Fim Júnior, Unesp Jaboticabal. |
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Título: |
Somatic cell count in the diagnosis of subclinical mastitis in sheep of different breeds. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Semina: Ciências Agrárias, Londrina, v.39, n.4, p.1555-1564, jul./ago. 2018 |
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ISSN: |
1679-0359 |
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DOI: |
10.5433/1679-0359.2018v39n4p1555 |
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Idioma: |
Inglês |
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Conteúdo: |
The aims of this study were to determine the occurrence of subclinical mastitis in sheep of different breeds and the values for somatic cell count (SCC) in milk for the diagnosis of the disease at lactation and weaning, a fundamental prerequisite for identifying animals in need of control measures. Milk samples were obtained from 1,457 mammary halves of Santa Inês, Texel, Ile de France, and Dorper sheep at two different periods, during the second week of lactation and at weaning. After teats antisepsis, the samples were collected, and identification of the infectious etiology of mastitis and determination of SCC were performed. Microorganisms were identified in 117/762 (15.3%) mammary halves in the second week of lactation and in 86/694 (12.4%) at weaning. Coagulase-negative staphylococci (CoNS) were the etiological agents with the highest incidence alone and in association with other microorganisms, with percentages of 58.1% and 60.6%, respectively. The Santa Inês presented a higher incidence of subclinical mastitis when compared to the other breeds. The cut-off values of SCC for subclinical mastitis were determined at both sampling periods and varied according to stage of lactation, as well breed. These results illustrate the lack of a universal value that can be used for the diagnosis of mastitis and suggests the need for permanent follow-up in herds in order to control the disease. |
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Palavras-Chave: |
Teste diagnóstico. |
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Thesagro: |
Leite; Ovelha. |
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Categoria do assunto: |
H Saúde e Patologia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/182166/1/SomaticCellCount.pdf
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Marc: |
LEADER 02084naa a2200217 a 4500
001 2094820
005 2019-05-06
008 2018 bl uuuu u00u1 u #d
022 $a1679-0359
024 7 $a10.5433/1679-0359.2018v39n4p1555$2DOI
100 1 $aZAFALON, L. F.
245 $aSomatic cell count in the diagnosis of subclinical mastitis in sheep of different breeds.$h[electronic resource]
260 $c2018
520 $aThe aims of this study were to determine the occurrence of subclinical mastitis in sheep of different breeds and the values for somatic cell count (SCC) in milk for the diagnosis of the disease at lactation and weaning, a fundamental prerequisite for identifying animals in need of control measures. Milk samples were obtained from 1,457 mammary halves of Santa Inês, Texel, Ile de France, and Dorper sheep at two different periods, during the second week of lactation and at weaning. After teats antisepsis, the samples were collected, and identification of the infectious etiology of mastitis and determination of SCC were performed. Microorganisms were identified in 117/762 (15.3%) mammary halves in the second week of lactation and in 86/694 (12.4%) at weaning. Coagulase-negative staphylococci (CoNS) were the etiological agents with the highest incidence alone and in association with other microorganisms, with percentages of 58.1% and 60.6%, respectively. The Santa Inês presented a higher incidence of subclinical mastitis when compared to the other breeds. The cut-off values of SCC for subclinical mastitis were determined at both sampling periods and varied according to stage of lactation, as well breed. These results illustrate the lack of a universal value that can be used for the diagnosis of mastitis and suggests the need for permanent follow-up in herds in order to control the disease.
650 $aLeite
650 $aOvelha
653 $aTeste diagnóstico
700 1 $aSANTANA, R. C. M.
700 1 $aESTEVES, S. N.
700 1 $aFIM JÚNIOR, G. A.
773 $tSemina: Ciências Agrárias, Londrina$gv.39, n.4, p.1555-1564, jul./ago. 2018
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Registro original: |
Embrapa Pecuária Sudeste (CPPSE) |
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