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| Registros recuperados: 35 | |
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| Baeza,Carlos M; Cabezas,Carolina; Terrab,Anass; Stuessy,Tod; Ruiz,Eduardo; Negritto,Maria; Urtubey,Estrella. |
| The genus Hypochaeris (Asteraceae, Lactuceae) contains twelve species in Europe, three in Asia, and approximately 50 in South America. In this paper, we worked with mitotic chromosomes of three different species of Hypochaeris from Chile: H. acaulis, H. incana and H. scorzonerae. The species are very different in morphology and geographic distribution. The aim of this work was to compare the chromosome morphology of these species. We found that the chromosomes are different in size and morphology in H. acaulis (smaller than 6 µm and only chromosome 3 having a secondary constriction on the short arm). In H. incana and H. scorzonerae the chromosomes are very similar in size, and chromosomes 2 (on the long arm) and 3 (on the short arm) contain secondary... |
| Tipo: Journal article |
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| Ano: 2007 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432007000200011 |
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| Ruiz,Eduardo; Toro,Oscar; Crawford,Daniel J; Stuessy,Tod F; Negritto,María A; Baeza,Carlos; Becerra,José. |
| Phylogenetic relationships among Chilean species of Drimys as well asD. granadensis from Central America andD. angustifolia from Brazil were reconstructed using internal transcribed spacers (ITS) of nuclear ribosomal DNA and a parsimony analysis. Our results at the family level were congruent with previous phylogenetic hypotheses. Molecular data indicate that the Juan Fernandez Island endemic D. confertifolia diverged early in the evolution of the genus, and it is not closely related to the continental species D. winteri, as might be expected on the basis of morphology and biogeography. The ITS phytogeny also provides general support for a recent distribution of species on the western side of the Andes Mountains; the only exception is D. andina, which may... |
| Tipo: Journal article |
Palavras-chave: Drimys; Evolution; ITS; Indels; Winteraceae. |
| Ano: 2008 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432008000200008 |
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| Baeza,Carlos; Bastías,Cristián; Stuessy,Tod; Ruiz,Eduardo; Greimler,Josef; López-Sepulveda,Patricio; Peñailillo,Patricio; Novoa,Patricio; Gatica,Alejandro. |
| Durante una expedición al Archipiélago de Juan Fernández, Chile, en febrero de 2011, se recolectaron semillas de Taraxacumfernandezianum Dahlst. provenientes de las islas Robinson Crusoe y Alejandro Selkirk. Se realizó un análisis citológico de las dos poblaciones y se concluyó que ambas son triploides, con un 2n = 3x = 24 cromosomas, con una fórmula cariotípica de 18m + 3sm + 3sm-sat, esto es, 18 cromosomas metacéntricos, 3 cromosomas submetacéntricos y 3 cromosomas submetacéntricos con un satélite en el brazo largo. Coincidentemente, estas poblaciones son citológicamente idénticas a las reportadas en Japón e India para Taraxacum officinale. Sobre estos antecedentes, concluimos que desde un punto de vista citológico Taraxacum fernandezianum podría ser... |
| Tipo: Journal article |
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| Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432013000200019 |
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| Fuentes,Glenda; Cisternas,Anita; Valencia,Graciela; Mihoc,Maritza; Ruiz,Eduardo; Hasbún,Rodrigo; Valenzuela,Sofía; Baeza,Carlos M.. |
| RESUMEN Dentro de los componentes de la diversidad biológica se encuentran la diversidad taxonómica y genética. El análisis de ambos resulta indispensable para la elaboración de estrategias de manejo y conservación de áreas prioritarias para la conservación. La península de Hualpén alberga uno de los últimos relictos de bosque costero de la Región del Bío-Bío, concentrado en la Estación de Biología Terrestre (EBT) cedida en comodato a la Universidad de Concepción, por parte de la gobernación de Concepción. En este estudio se evaluó la variabilidad taxonómica y genética de la península con el fin de contribuir al desarrollo de estrategias de conservación y futuro desarrollo de planes de manejo en esta. Para ello se cuantificó la riqueza de especies a lo... |
| Tipo: Journal article |
Palavras-chave: Relicto nativo; Riqueza de especies; Variabilidad genética; Conservación. |
| Ano: 2017 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432017000100094 |
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| Baeza,Carlos; Finot,Víctor L.; Ruiz,Eduardo. |
| Alstroemeria L., one of the most diverse genera of the Chilean flora and of high floricultural value, is represented by 35 species, most of them distributed between 28–38° S in the Mediterranean zone of Central Chile. There are 24 complex-forming taxa, of which 18 have conservation problems (8 are considered “endangered” and 10 as “vulnerable”). One of these complexes is Alstroemeria presliana Herb. with two subspecies: subsp. presliana and subsp. australis Bayer. Alstroemeria presliana grows in Chile and Argentina: subsp. presliana is distributed from Reserva Nacional Siete Tazas (35°27′ S, Region of Maule) to Antuco, (37°25′ S, Region of Bío-Bío), and is also found in Neuquén, Argentina; subsp. australis is endemic to the Cordillera of Nahuelbuta. A... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alstroemeria; Asymmetry; Chile; Karyotype; Species complex. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572015000200199 |
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| Baeza,Carlos M.; Finot,Víctor; Ruiz,Eduardo; Carrasco,Pedro; Novoa,Patricio; Rosas,Marcelo; Toro-Núñez,Oscar. |
| Abstract Alstroemeria L. (Alstroemeriaceae) represents one of the most diverse genera of vascular plants in Chile. It contains approximately 54 taxa, 40 of which are endemic. The “complex” Alstroemeria magnifica is endemic to Chile, and it comprises four varieties: A. magnifica var. magenta, A. magnifica var. magnifica, A. magnifica var. sierrae, and A. magnifica var. tofoensis. It is distributed from Coquimbo to the Valparaíso Region. We analyzed karyotypes of 10 populations along its natural distribution. All the populations presented an asymmetric karyotype, with 2n = 16 chromosomes but with three different karyotypic formulae. Alstroemeria magnifica var. magnifica and A. magnifica var. sierrae presented the same karyotypic fomula, and A. magnifica var.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alstroemeria; Karyotype; Species complex; Asymmetry; Chile. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572018000300434 |
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| Baeza,Carlos; Ruiz,Eduardo; Negritto,María. |
| Alstroemeria L. (Alstroemeriaceae) is an American genus of monocots with two principal distribution centers in Chile and Brazil. In Chile, it is represented by about 32 species, most of them in central Chile, an area known for its high level of endemism. The "complex" Alstroemeria hookeri is endemic to Chile, where it is distributed from the Coquimbo to the Bío-Bío Region. We analyzed the karyotypes of 36 populations of this complex along its natural distribution. Ten metaphases per population were used for chromosome measurements. All analyzed subspecies presented a well defined asymmetric karyotype. The populations of A. hookeri subsp. hookeri collected in the coastal range of the Bío-Bío Region and the populations from the Central Valley of this Region... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alstroemeria hookeri; Complex; Karyotype; Polymorphisms; Chile. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572010000100020 |
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| Baeza,Carlos M; Schrader,Otto; Ruiz,Eduardo; Negritto,M. |
| Alstroemeria (Alstroemeriaceae) is an endemic genus of South America with two major distribution centers in the continent: Chile and Brazil. In Chile the genus is distributed from the North, near Iquique (20º13 S, 70º09 W) to the Chilean and Argentine Patagonia (53º10 S, 70º54 W). The central zone of Chile presents the highest number of species. A. presliana Herb. grows from Curicó (34º59 S, 71º14 W) to Cautín (38º45 S, 72º34 W) in Chile and Neuquén (36º50 S, 71º05 W), Argentina. A comparative karyotype study was made between a population of A. presliana subsp. presliana and a population of A. presliana subsp. australis Ehr. Bayer. Both populations presented asymmetric karyotypes, with 2n = 2x = 16 chromosomes, but with different chromosome... |
| Tipo: Journal article |
Palavras-chave: Alstroemeriaceae; Karyotype; Chromosome numbers; Chile. |
| Ano: 2008 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392008000400002 |
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| Flores,Cristian; Delaveau,Catherine; Alvarez,Carolina; Vergara,Dafne; Baeza,Carlos; Ruiz,Eduardo; Uribe,Matilde. |
| Phycella australis (Phil.) Ravenna is a Chilean plant with high ornamental potential; however, the intensive extraction as a cut flower might be detrimental for the conservational state by ignoring the state of genetic variation. The objective of this investigation was to assess genetic variability within and between three populations of P. australis in the Biobío Region using inter-simple sequence repeat (ISSR) markers. The evaluated areas correspond to three locations in the province of Concepción, Biobío Region: Desembocadura (36°48' S, 73°10' W), Santa Juana (36°58' S, 72°58' W), and Lipinhue (37°00' S, 72°58' W). Six ISSR primers were used obtaining 51 fragments, from which 72.5% were polymorphic. From the three evaluated sites Santa Juana showed a... |
| Tipo: Journal article |
Palavras-chave: Amaryllidaceae; Genetic variability; Molecular marker; Ornamental plant. |
| Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392013000100012 |
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| Espejo,Jaime; Baeza,Marcelo; Ruiz,Eduardo; Mora,Freddy; Gomez,Miguel; Montenegro,Gloria. |
| This report provides information on applying the cleft grafting technique in the species Sophora toromiro (Phil.) Skottsb., focused on its propagation, and contributes to the conservation of the genetic base of this species in the medium and long term. A germplasm collection was obtained via interspecific grafting using Sophora cassioides (Phil.) Sparre as rootstock, employing two variations of cleft grafting sealing. The survival of 301 S. toromiro grafts of the Titze line at ten months was 64% or 95%, according to the type of sealing performed. A second experiment, comparing the origin of the material, indicated that the plants of Goteborg origin showed survival values close to 63%, versus 58% for those from the Jardín Botánico Nacional de Viña del Mar... |
| Tipo: Journal article |
Palavras-chave: Conservation; Graft; Sophora toromiro; S. cassioides. |
| Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202013000100019 |
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| Registros recuperados: 35 | |
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