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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
18/08/1994 |
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Data da última atualização: |
10/07/2025 |
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Autoria: |
PARKS, C. R.; WENDEL, J. F.; SEWELL, M. M.; QIU, L. Y. |
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Título: |
Genetic control of isozyme variation in the genus Liriodendron L. (Magnoliaceae). |
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Ano de publicação: |
1990 |
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Fonte/Imprenta: |
Journal of Heredity, v. 81, p. 317-323, 1990. |
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Idioma: |
Inglês |
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Conteúdo: |
The genus Liriodendron consists of two morphologically similar but intercontinentally distributed angiosperm tree species. To monitor transmission genetics in these long-isolated but compatible taxa, isozyme genetics were investigated in 13 synthetic progenies. The segregating families involved genetic material of both species of the genus and were generated by intercrossing selected parents of L. tulipifera and backcrossing the L. tulipifera x L. chinense hybrid to the L. tulipifera parent trees. Fifteen of the 16 resolved enzyme systems were controlled by polymorphic loci. Based on an analysis of the segregation ratios, 20 staining zones behaved as genetic loci that displayed simple codominant inheritance of specific enzyme traits, and five were monomorphic in the progenies we studied. Tests of joint segregation in 175 of 190 possible pairwise combinations for the 20 loci demonstrated one linkage and suggested several weak linkages. There was no evidence of the accumulation of mechanisms that might have disrupted normal transmission genetics, because the segregations followed Mendelian expectations. |
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Thesagro: |
Controle Genético; Isoenzima. |
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Categoria do assunto: |
S Ciências Biológicas |
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Marc: |
LEADER 01638naa a2200181 a 4500
001 1280057
005 2025-07-10
008 1990 bl uuuu u00u1 u #d
100 1 $aPARKS, C. R.
245 $aGenetic control of isozyme variation in the genus Liriodendron L. (Magnoliaceae).$h[electronic resource]
260 $c1990
520 $aThe genus Liriodendron consists of two morphologically similar but intercontinentally distributed angiosperm tree species. To monitor transmission genetics in these long-isolated but compatible taxa, isozyme genetics were investigated in 13 synthetic progenies. The segregating families involved genetic material of both species of the genus and were generated by intercrossing selected parents of L. tulipifera and backcrossing the L. tulipifera x L. chinense hybrid to the L. tulipifera parent trees. Fifteen of the 16 resolved enzyme systems were controlled by polymorphic loci. Based on an analysis of the segregation ratios, 20 staining zones behaved as genetic loci that displayed simple codominant inheritance of specific enzyme traits, and five were monomorphic in the progenies we studied. Tests of joint segregation in 175 of 190 possible pairwise combinations for the 20 loci demonstrated one linkage and suggested several weak linkages. There was no evidence of the accumulation of mechanisms that might have disrupted normal transmission genetics, because the segregations followed Mendelian expectations.
650 $aControle Genético
650 $aIsoenzima
700 1 $aWENDEL, J. F.
700 1 $aSEWELL, M. M.
700 1 $aQIU, L. Y.
773 $tJournal of Heredity$gv. 81, p. 317-323, 1990.
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