Somaclonal Variation in Rice (<i>Oryza Sativa</i> L.) Plants Regenerated by Seed Tissue Culture

Plantas de arroz fueron regeneradas de callos obtenidos por cultivos in vitro de cariopsis Las plantas regeneradas mostraron variaciones en la capacidad de macollamiento, color de cáscara, largo y ancho del grano, longitud de la panoja y porcentaje de cáscara. Algunas de estas variantes han sido trasmitidas por las semillas a una segunda generación, lo que indicaría una probable estabilidad. Sin embargo, son necesarios más estudios para comprobar si las variaciones observadas son estables o de carácter epigenético.Rice plants were regenerated from calli obtained by seed tissue culture in vitro. Regenerated plants and their progenies showed variations in shooting ability, husk colour, length and width grain, panicle length and percentage of husk. Some of these variations were transfered by seed to a second generation, what indicated some stability More studies are necessary to know if the variations were produced by genetic or epigenetic characters.Facultad de Ciencias Agrarias y Forestale

Somaclonal Variation in Rice (<i>Oryza Sativa</i> L.) Plants Regenerated by Seed Tissue Culture

Plantas de arroz fueron regeneradas de callos obtenidos por cultivos in vitro de cariopsis Las plantas regeneradas mostraron variaciones en la capacidad de macollamiento, color de cáscara, largo y ancho del grano, longitud de la panoja y porcentaje de cáscara. Algunas de estas variantes han sido trasmitidas por las semillas a una segunda generación, lo que indicaría una probable estabilidad. Sin embargo, son necesarios más estudios para comprobar si las variaciones observadas son estables o de carácter epigenético.Rice plants were regenerated from calli obtained by seed tissue culture in vitro. Regenerated plants and their progenies showed variations in shooting ability, husk colour, length and width grain, panicle length and percentage of husk. Some of these variations were transfered by seed to a second generation, what indicated some stability More studies are necessary to know if the variations were produced by genetic or epigenetic characters.Facultad de Ciencias Agrarias y Forestale

Countercation intercalation and kinetics of charge transport during redox reactions of nickel hexacyanoferrate

The dynamics of charge propagation in nickel hexacyanoferrate, a model metal-substituted analogue of Prussian Blue-type cyanide-bridged systems, was considered in electrolytes containing potassium and other alkali metal cations. The apparent (effective) diffusion coefficients for charge transport were determined using a large-amplitude potential-step chronocoulometry and small-amplitude potential-step chronocoulometric potentiostatic intermittent titration. The dependence of diffusion coefficient on the potential applied is consistent with the intercalation like model of the counter-cation sorption/desorption during redox processes of nickel hexacyanoferrate. Some differences in diffusion coefficients may originate from distinct charge densities (membrane properties) of the oxidized and reduced metal hexacyanoferrate structures. The existence of strong attractive interactions between an alkali metal cation and the cyanometallate matrix is also expected. The overall dynamics of charge propagation seems to be controlled by transport of electrolyte cations within the film rather than by electron self-exchange (hopping) between the mixed-valence hexacyanoferrate(III,II) ionic sites

Israel and the Cosmological Empires of the Ancient Orient. Symbols of Order in Eric Voegelin's "Order and History", Vol. 1

The essays collected in the present volume are the output of an interdisciplinary conference on Israel and Revelation, the first volume of Eric Voegelin\u2019s Order and History, held in Munich, May 15th\u201316th, 2017 and sponsored by the Voegelin-Zentrum f\ufcr Politik, Kultur und Religion at the Geschwister-Scholl-Institute (LMU Munich) and the Department of Philosophy of the Catholic University of the Sacred Hearth (Milan). The goal of the initiative consisted, in one way, in offering new perspectives on the reading of Israel and Revelation, and in another way, to call on the carpet ambiguities and discrepancies of the book. In front of the markedly interdisciplinary character of Israel and Revelation, some contributions addressed the integration of themes treated by the different disciplines the work approaches: philosophy, theology, archaeology, Ancient Oriental studies, Jewish studies, political theory. Others instead focused on the originality of the hermeneutic approach, which adds a horizon of meaning that is far wider than those of the individual disciplines involved in the work. As a result, it thus emerged that Israel and Revelation preserves within it a range of stimuli that still await development, and whose potentiality concerns both the individual areas from which the investigation draws as well as its general theoretical framework