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Registro Completo
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
25/02/2005 |
|
Data da última atualização: |
19/04/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Internacional - A |
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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. |
|
Idioma: |
Inglês |
|
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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Embrapa Semiárido (CPATSA) |
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