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	Provedor de dados Gayana Botánica (5) Autor Torres-Díaz,Cristian (5) Gianoli,Ernesto (3) Gómez-González,Susana (2) Molina-Montenegro,Marco A (2) Ruiz,Eduardo (2) Baeza,Carlos M (1) Carrasco-Urra,Fernando (1) Cavieres,Lohengrin A (1) González-Silvestre,Leticia A (1) Salgado-Luarte,Cristian (1) Torres,Patricio (1) Mais... Palavra-chave AFLP (1) Allelopathy (1) Antártica (1) Climbers (1) Esfuerzo reproductivo (1) Estrés hídrico (1) Evolution (1) Fv / Fm (1) Genetic variability (1) Islas Shetland (1) Key innovation (1) Matorral (1) Mediterranean (1) Seed germination (1) Yellow starthistle (1) Mais... Tipo do documento Journal article (5) Ano 2013 (1) 2012 (1) 2011 (1) 2010 (1) 2009 (1) País Chile (5) Idioma Inglês (3) Espanhol (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 5 Primeira ... 1 ... Última COMPETITIVE EFFECTS OF THE ALIEN INVASIVE CENTAUREA SOLSTITIALISL. ON TWO CHILEAN BACCHARIS SPECIES AT DIFFERENT LIFE-CYCLE STAGES Gayana Botánica Gómez-González,Susana; Cavieres,Lohengrin A; Torres,Patricio; Torres-Díaz,Cristian. Several studies have revealed a variety of mechanisms of invasion of alien plant species. However, little is known on how those mechanisms and their associated effects on native species change across different life-cycle stages. Under controlled conditions, we assessed the interactions between the alien invasive species Centaurea solstitialis L. (Asteraceae) and two pioneer native species to the Chilean matorral; Baccharis linearis (Ruiz et Pav.) Pers. and B. paniculata DC. (Asteraceae). Competitive effects of the invader on natives were evaluated by combining different life-cycle stages: seed-seed, plant-seed, and plant-plant. Seed germination of C. solstitialis was explosive and much faster than that of the native species. The presence of C. solstitialis... Tipo: Journal article Palavras-chave: Allelopathy; Matorral; Mediterranean; Seed germination; Yellow starthistle. Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432009000100007 El cariotipo de Chaetanthera renifolia (J. Remy) Cabrera (Asteraceae) Gayana Botánica Baeza,Carlos M; Ruiz,Eduardo; Torres-Díaz,Cristian. The karyotype of Chaetanthera renifolia (J. Remy) Cabrera from Chile was examined. The species has 2n = 2x = 44 chromosomes, with lm+ lst + 2st-sat+ 17t+ lt-satchromosomes. The reported karyotype is bimodal and very asymmetric (AsK % = 86.6, TF % = 13.4 and Syi % = 15.5). These results are indicating that this species has the highest known chromosome number of the genus so far and the most asymmetrical karyotype of the group. Tipo: Journal article Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432010000200012 Plasticidad fenotípica en dos poblaciones antárticas de Colobanthus quitensis (Caryophyllaceae) bajo un escenario simulado de cambio global Gayana Botánica Molina-Montenegro,Marco A; Torres-Díaz,Cristian; Carrasco-Urra,Fernando; González-Silvestre,Leticia A; Gianoli,Ernesto. La Antártica se caracteriza por presentar condiciones ambientales extremas, lo cual limita el establecimiento de las plantas vasculares. Dentro de dichas características ambientales están las bajas temperaturas, corta estación de crecimiento y el estrés hídrico y nutricional. La baja disponibilidad hídrica ha sido sugerida como la principal limitante para el éxito de establecimiento, debido a que afecta de manera negativa las respuestas fisiológicas y reproductivas de las plantas. Colobanthus quitensis (Kunth) Bartl. (Caryophyllaceae) es una de las dos plantas vasculares nativas que habitan la Antártica Marítima y se ha demostrado que su desempeño fisiológico y reclutamiento es afectado negativamente por el estrés hídrico del suelo. La plasticidad... Tipo: Journal article Palavras-chave: Antártica; Esfuerzo reproductivo; Estrés hídrico; Fv / Fm; Islas Shetland. Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432012000100015 The effects of fire-related cues on seed germination and viability of Helenium aromaticum (Hook.) H.L. Bailey (Asteraceae) Gayana Botánica Gómez-González,Susana; Torres-Díaz,Cristian; Gianoli,Ernesto. Se evaluó el efecto de la temperatura y el humo sobre la germinación de Helenium aromaticum; una planta anual abundante en matorrales incendiados. Encontramos que las semillas son resistentes a la alta temperatura (100°C) y al humo, pero su germinación no es estimulada por estos factores. Otras señales del fuego deben ser evaluadas. Tipo: Journal article Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432011000100007 WITHIN-POPULATION GENETIC DIVERSITY OF CLIMBING PLANTS AND TREES IN A TEMPERATE FOREST IN CENTRAL CHILE Gayana Botánica Torres-Díaz,Cristian; Ruiz,Eduardo; Salgado-Luarte,Cristian; Molina-Montenegro,Marco A; Gianoli,Ernesto. The climbing habit is a key innovation in angiosperm evolution: climbing plant taxa have greater species richness than their non-climbing sister groups. It is considered that highly diversified clades should show increased among-population genetic differentiation. Less clear is the expected pattern regarding within-population genetic diversity in speciose lineages. We tested the hypothesis of greater within-population genetic diversity in climbing plants compared to trees in a temperate forest in central Chile. The assumption underlying this hypothesis is that higher among-population differentiation in climbers compared to trees should reflect higher genetic diversity as well. AFLP markers from 167 individual plants from 14 species (seven climbers and... Tipo: Journal article Palavras-chave: AFLP; Climbers; Evolution; Genetic variability; Key innovation. Ano: 2013 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432013000100005 Registros recuperados: 5 Primeira ... 1 ... Última

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