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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
28/05/1993 |
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Data da última atualização: |
30/03/2023 |
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Autoria: |
TORRES, A. M.; SOOST, R. K.; DIEDENHOFEN, U. |
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Afiliação: |
Department of Botany, University of kansas, Lawrence 66045: and Department of Plant Sciences, University of California, Riverside 92521. |
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Título: |
Leaf isozymes as genetic markers in Citrus. |
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Ano de publicação: |
1978 |
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Fonte/Imprenta: |
American Journal of Botany. v.65, N.8, p.869-881. 1978. |
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Idioma: |
Inglês |
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Conteúdo: |
The genetic control fo isozymes from Citrus and its near relatives was determined for three gene/enzyme systems: glutamate oxaloacetate transaminase, phosphoglucose isomerase and phosphoglucose mutase. These enzymes are controlled by four genes having 19 codominant alleles, 12 of which occur in Citrus subg Citrus. Formal genetic studies were carried out with F1 biotypes and F1 populations of known origin. When biotypes were grouped into traditionally recognized species to examine genetic affinities within and between species, a remarkable patterm of uniformity of genotype combinations was found within a species, and every species had an unique combination. Because many economicaly important cultivars produce asexual(nucellar) as well as sexua(zygotic) embryos a central problem of the breeder is to distinguish these when plants are young, long before fruiting. Isozyme markers can be used with varying degrees of efficiency, depending on the genotypes of the particular parents, to distinguish nucellar seedlings from those of zygotic origin. |
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Palavras-Chave: |
Citros; Gens. |
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Thesagro: |
Eletroforese; Melhoramento; Poncirus Trifoliata; Taxonomia. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01624naa a2200217 a 4500
001 1646239
005 2023-03-30
008 1978 bl uuuu u00u1 u #d
100 1 $aTORRES, A. M.
245 $aLeaf isozymes as genetic markers in Citrus.$h[electronic resource]
260 $c1978
520 $aThe genetic control fo isozymes from Citrus and its near relatives was determined for three gene/enzyme systems: glutamate oxaloacetate transaminase, phosphoglucose isomerase and phosphoglucose mutase. These enzymes are controlled by four genes having 19 codominant alleles, 12 of which occur in Citrus subg Citrus. Formal genetic studies were carried out with F1 biotypes and F1 populations of known origin. When biotypes were grouped into traditionally recognized species to examine genetic affinities within and between species, a remarkable patterm of uniformity of genotype combinations was found within a species, and every species had an unique combination. Because many economicaly important cultivars produce asexual(nucellar) as well as sexua(zygotic) embryos a central problem of the breeder is to distinguish these when plants are young, long before fruiting. Isozyme markers can be used with varying degrees of efficiency, depending on the genotypes of the particular parents, to distinguish nucellar seedlings from those of zygotic origin.
650 $aEletroforese
650 $aMelhoramento
650 $aPoncirus Trifoliata
650 $aTaxonomia
653 $aCitros
653 $aGens
700 1 $aSOOST, R. K.
700 1 $aDIEDENHOFEN, U.
773 $tAmerican Journal of Botany.$gv.65, N.8, p.869-881. 1978.
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| 12. |  | GAMA, E. E. G.; PACHECO, C. A. P.; SANTOS, M. X.; PARENTONI, S. N. Perspectivas de utilização no melhoramento de duas populações de milho (Zea mays L.) de ciclo superprecoce. In: CONGRESSO NACIONAL DE MILHO E SORGO, 19.; REUNIAO TECNICA ANUAL DE MILHO, 37.; REUNIAO TECNICA ANUAL DO SORGO, 21., 1992, Porto Alegre. Resumos. Porto Alegre: SAA, 1992. p. 40.| Tipo: Resumo em Anais de Congresso |
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