http://localhost:8080/handle/10.34073/112 2026-04-16T16:12:57Z http://localhost:8080/handle/10.34073/392 Título : Libro de Conferencias y trabajos CECA 2024 Autor : Varios 2024-09-16T00:00:00Z http://localhost:8080/handle/10.34073/193 Título : Berberis microphylla G.Forst. Autor : Radice, Silvia; Arena, Miriam; Sanmartino, Liliana; Vicente, Ariel; Cabana, Julio; Curvetto, Nestor Resumen : Las especies nativas, de la Patagonia como las del género Berberis, han hecho una importante contribución a la alimentación y salud de las culturas locales. Los frutos eran consumidos por los indios Onas de Tierra del Fuego, quienes a su vez empleaban la madera para fabricar flechas. Los Tehuelches preparaban una bebida con los frutos triturados y puestos a macerar en agua, sin dejarlos fermentar (Alonso y Desmarchelier, 2006). El calafate está citado como fuente de alcaloides del tipo de las berberinas y antocianinas, con una aplicación medicinal y tintórea (Pomilio, 1973; Shaffer, 1985; Fajardo Morales et al., 1986; Fajardo Morales, 1987). Las hojas, la corteza y la madera se destacan por sus propiedades astringentes, febrífugas y digestivas, usándose también en afecciones hepáticas, como refrescantes y laxantes (Rapoport et al., 1999; Alonso y Desmarchelier, 2006). Gracias a estas características, son utilizadas por la cultura mapuche (Muñoz et al., 2001), que también emplean los frutos en casos de resfríos y fiebre intermitente (Alonso y Desmarchelier, 2006). Las raíces y cortezas también eran usadas como tónicos energizantes. Los jugos de los frutos se usaron con fines oftalmológicos (Casamiquela, 2001). 2018-01-01T00:00:00Z http://localhost:8080/handle/10.34073/192 Título : Variability in floral traits and reproductive success among and within populations of Berberis microphylla G. Forst., an underutilized fruit species Autor : Radice, Silvia; Arena, Miriam; Lencinas, María Resumen : Berberis microphylla G. Forst. (calafate) is an evergreen and spiny shrub considered as a non-timber patagonian forest product, that is relevant for diversification of agrifood production, particularly interesting since its black–blue fruits are rich in phenolic compounds. The objective of this research is to analyze the variability in floral traits and reproductive success of Berberis microphylla G. Forst. among and within three populations of Tierra del Fuego along three growing seasons. The presence of variability in some floral traits as well as in the reproductive success of B. microphylla among and within three Tierra del Fuego populations was observed, in agreement with the environmental conditions i.e. mean daily temperatures and accumulated rainfall for the three populations and the three growing seasons. Flower dry weight and gynoecium area are good indicators of flower quality (i.e. ovule number), with positive and significant correlations between them (flower dry weight with gynoecium area, r=0.551; p=<0.001, and flower dry weight with ovule number, r=0.407, p < 0.001). Pollen/ovule, seed/ovule, fruit/flower and fecundity indices are also good indicators not only of flower quality but also of the reproductive success. The multivariate analysis allowed to analyze jointly the whole measured variables, and explored the influence of annual climatic variability in the response of plants and populations. The variables with great changes among years were those representing quantities (the numbers of ovules and pollen grains) as well as some of the related with size (gynoecium elongation and pollen grain size). Likewise, the influence of each variable in the population split was highlighted at each growing season, which helps to understand the drivers of the differences among them. Plants with a highlight performance were detected and could be selected for their clonal propagation and ex-situ evaluation for the beginning of a breeding program. 2018-01-01T00:00:00Z http://localhost:8080/handle/10.34073/191 Título : Reproductive shoots of Berberis microphylla G. Forst. in relation with the floral bud development and the fruit set Autor : Radice, Silvia; Arena, Miriam Resumen : The objective of this research was to study the reproductive shoots of Berberis microphylla G. Forst. in relation with the floral bud development and the fruit set among and within three populations of Tierra del Fuego during three consecutive years. Evolution of the different reproductive phenological phases of B. microphylla was in accordance with the climatic conditions of the sites and the years, in particular with the temperatures of the end of the winter and beginning of the spring. In fact, blooming period in US was advanced compared to FL and CI populations. Also, full bloom was shorter in US respect to FL and CI populations when the temperatures increased gradually as occurred in 2014 year. The development of reproductive shoots was significantly affected by the population, the shadow and the growing season. Mixed bud number/length was highest in US population; however fruit set was maximum in FL population. Shadow levels of 50% decreased total bud number, total bud number/node number, mixed bud number, mixed bud number/length and fruit number/length. Ultimately, mixed bud number, mixed bud number/length and aborted flowers were maxima in 2015e2016 growing season. The obtained results confirm the presence of phenotypic plasticity of the reproductive shoots of Berberis microphylla G. Forst. in relation with the floral bud development and the fruit set. 2018-01-01T00:00:00Z