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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
05/06/1995 |
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Data da última atualização: |
05/04/2017 |
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Autoria: |
ACOSTA, F. J.; SERRANO, J. M.; PASTOR, C.; LOPEZ, F. |
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Título: |
Significant potential levels of hierarchical phenotypic selection in a woody perennial plant, Cistus ladanifer. |
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Ano de publicação: |
1993 |
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Fonte/Imprenta: |
Oikos, v.68, n.2, p.267-272, 1993. |
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Idioma: |
Inglês |
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Conteúdo: |
Cistus ladanifer L. is a Mediterranean woody perennial species (with two varieties: var. albiflorus and var. maculatus) that follows and obligatory seeder strategy for post-fire seedling establishment. Large numbers of seeds are produced inside fruit capsules split up into compartment. The capsules are the result of apical meristems and appear in different shoot modules and branches throught the plant. Seed production, used here as measure of fitness, can thus be analyzed hierarchically in the different structural levels of the plant. A nested analysis of variance was used to test the heterogeneity in the reproductive output of this species in the hierarchical structural arrangement of the individual plants, in order to provide empirical evidence on the potential of hierarchical phenotypic selection, a theoretical framework recently developed for the evolutive processes in modular organisms. With the exception of the only suprandividual level tested (subpopulations of varieties), all levels (shoot modules, branches and genetic individuals) were significantly heterogeneous in the seed production. The heterogeneity of each level is independent of that of the other levels. In the same way as the heterogeneity in selective traits of genetic individuals is a usual prerequisite for classical selection in unitary organisms an equivalent heterogeneity should be demonstrated in the different levels of modular organisms for the possible action of phenotypic hierarchial selection upon those levels. The analysis method used here is considered as valid procedure for the detection of significant potential levels of hierarchial phenotypic selection in modular organisms. MenosCistus ladanifer L. is a Mediterranean woody perennial species (with two varieties: var. albiflorus and var. maculatus) that follows and obligatory seeder strategy for post-fire seedling establishment. Large numbers of seeds are produced inside fruit capsules split up into compartment. The capsules are the result of apical meristems and appear in different shoot modules and branches throught the plant. Seed production, used here as measure of fitness, can thus be analyzed hierarchically in the different structural levels of the plant. A nested analysis of variance was used to test the heterogeneity in the reproductive output of this species in the hierarchical structural arrangement of the individual plants, in order to provide empirical evidence on the potential of hierarchical phenotypic selection, a theoretical framework recently developed for the evolutive processes in modular organisms. With the exception of the only suprandividual level tested (subpopulations of varieties), all levels (shoot modules, branches and genetic individuals) were significantly heterogeneous in the seed production. The heterogeneity of each level is independent of that of the other levels. In the same way as the heterogeneity in selective traits of genetic individuals is a usual prerequisite for classical selection in unitary organisms an equivalent heterogeneity should be demonstrated in the different levels of modular organisms for the possible action of phenotypic hierarchial selection upon ... Mostrar Tudo |
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Palavras-Chave: |
Perennial plant; Planta perene. |
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Thesagro: |
População. |
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Thesaurus Nal: |
Cistus ladanifer; population. |
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Categoria do assunto: |
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Marc: |
LEADER 02286naa a2200217 a 4500
001 1784293
005 2017-04-05
008 1993 bl --- 0-- u #d
100 1 $aACOSTA, F. J.
245 $aSignificant potential levels of hierarchical phenotypic selection in a woody perennial plant, Cistus ladanifer.
260 $c1993
520 $aCistus ladanifer L. is a Mediterranean woody perennial species (with two varieties: var. albiflorus and var. maculatus) that follows and obligatory seeder strategy for post-fire seedling establishment. Large numbers of seeds are produced inside fruit capsules split up into compartment. The capsules are the result of apical meristems and appear in different shoot modules and branches throught the plant. Seed production, used here as measure of fitness, can thus be analyzed hierarchically in the different structural levels of the plant. A nested analysis of variance was used to test the heterogeneity in the reproductive output of this species in the hierarchical structural arrangement of the individual plants, in order to provide empirical evidence on the potential of hierarchical phenotypic selection, a theoretical framework recently developed for the evolutive processes in modular organisms. With the exception of the only suprandividual level tested (subpopulations of varieties), all levels (shoot modules, branches and genetic individuals) were significantly heterogeneous in the seed production. The heterogeneity of each level is independent of that of the other levels. In the same way as the heterogeneity in selective traits of genetic individuals is a usual prerequisite for classical selection in unitary organisms an equivalent heterogeneity should be demonstrated in the different levels of modular organisms for the possible action of phenotypic hierarchial selection upon those levels. The analysis method used here is considered as valid procedure for the detection of significant potential levels of hierarchial phenotypic selection in modular organisms.
650 $aCistus ladanifer
650 $apopulation
650 $aPopulação
653 $aPerennial plant
653 $aPlanta perene
700 1 $aSERRANO, J. M.
700 1 $aPASTOR, C.
700 1 $aLOPEZ, F.
773 $tOikos$gv.68, n.2, p.267-272, 1993.
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Registro original: |
Embrapa Pantanal (CPAP) |
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| 73. |  | ALBRECHT, J. C.; ANDRADE, J. M. V. de; SOUSA, C. N. A. de. Trigo BR 33 - Guará e BR 39 - Paraúna, novas cultivares para a região do Brasil Central. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 30, n. 1, p. 135-142, jan. 1995.| Biblioteca(s): Embrapa Trigo; Embrapa Unidades Centrais. |
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| 75. | | ALBRECHT, J. C.; ANDRADE, J. M. V. de; SOUSA, C. N. A. de. Trigo EMBRAPA 41: nova cultivar para Minas Gerais, Goiás e Distrito Federal. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 34, n. 8, p. 1511-1516, ago. 1999. Novas Cultivares.| Biblioteca(s): Embrapa Trigo; Embrapa Unidades Centrais. |
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| 80. | | SÓ e SILVA, M.; ANDRADE, J. M. V. de; ALBRECHT, J. C.; SOARES SOBRINHO, J.; CANOVAS, A. No Brasil Central também dá trigo. Cultivar, Pelotas, v. 3, n. 27, p. 18-23, abr. 2001.| Biblioteca(s): Embrapa Trigo. |
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