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	Provedor de dados JBAG (4) Autor Camadro,E.L (4) Budeguer,C.J (1) Capurro,M.A (1) Erazzú,L.E (1) Lukaszewicz,G (1) Medina Piles,V (1) Menone,M.L (1) Pérez,D.J (1) Mais... Palavra-chave Bioensayos citogeneticos (1) Biological species (1) Ex situ conservation (1) Ex situ regeneration (1) Genotoxicidad (1) Indice mitotico (1) Macrofitas acuaticas nativas (1) Meiosis (1) Numero cromosomico basico (1) Plant genetic resources (1) Pollen tube mitochondria (1) Pollen viability (1) Programmed cell death (1) Self-incompatibility (1) Sporads (1) Stevia (1) Taxonomic species (1) Tuber-bearing Solanum (1) Mais... Tipo do documento Info:eu-repo/semantics/article (4) Ano 2018 (1) 2015 (1) 2014 (1) 2012 (1) País Argentina (4) Idioma Inglês (3) Espanhol (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 4 Primeira ... 1 ... Última Is the genetic integrity of natural plant populations ex situ preserved with the current sampling, conservation and regeneration approaches? JBAG Camadro,E.L. Acceleration of environment degradation and climate change poses serious threats to both natural and agricultural ecosystems. In fact, the number of endangered plant species at the global level has increased yearly in the last decades, due to anthropic interventions that sum up to the climate change. Samples of natural plant populations, particularly of wild crop relatives, are ex situ conserved in germplasm banks, which have become active in the provision of genetic resources to breeders. The aim of this article is to generate discussion on the adequacy of (a) current protocols for sampling and ex situ conservation of the natural genetic diversity and (b) the actual species paradigm in plants, due to their consequences for this and future generations. Tipo: Info:eu-repo/semantics/article Palavras-chave: Biological species; Ex situ conservation; Ex situ regeneration; Plant genetic resources; Taxonomic species. Ano: 2014 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1852-62332014000100005 Pollen viability and meiotic irregularities in a collection of Stevia rebaudiana (Bertoni) Bertoni cultivated in Tucumán, Argentina JBAG Budeguer,C.J; Camadro,E.L; Erazzú,L.E. Stevia rebaudiana (Bertoni) Bertoni (2n=2x=22) (Asteraceae family) is a species of economic value due to the presence of steviol glycosides in leaves -mainly stevioside and rebaudioside A- which are non-caloric sugars. In 2013, a collection of plants (genotypes) from four contrasting environments was established in Tucuman, Argentina, for evaluation under local conditions and, eventually, breeding purposes. As a first step, pollen viability and meiosis was studied in a sample of 56 plants. The percentage of pollen viability varied from medium (69.4%) to high (99.6%) in 52 of them, but from low (36.5%) to relatively low (51.5%) in the remaining four. The latter four plants also presented pollen grains of heterogeneous size, which were classified as n... Tipo: Info:eu-repo/semantics/article Palavras-chave: Stevia; Pollen viability; Meiosis; Sporads. Ano: 2018 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1852-62332018000200005 In vivo self-incompatibility response in the wild potato Solanum chacoense bitter JBAG Capurro,M.A; Medina Piles,V; Camadro,E.L. In tuber-bearing Solanum species (potatoes), S-locus mediated self-incompatibility is under gametophytic control. In this system, self-fertilization is avoided when the same S-allele is expressed in both pistil and pollen. Because the ultrastructural details of the self-incompatibility response in this group of species is unknown, the aim of this study was to identify the cellular events involved in this response by using the diploid species S. chacoense Bitter as a model. To this end, pollinations were carried out in two genotypic combinations previously identified as (1) compatible and (2) self-incompatible (self-pollination) for the S-locus. Pollinated pistils were fixed on an hourly basis and observed under a transmission electron microscope to detect... Tipo: Info:eu-repo/semantics/article Palavras-chave: Pollen tube mitochondria; Programmed cell death; Self-incompatibility; Tuber-bearing Solanum. Ano: 2012 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1852-62332012000100005 Identificación de hidrófitas dulceacuícolas para estudios de genotoxicidad de contaminantes acuáticos JBAG Menone,M.L; Pérez,D.J; Lukaszewicz,G; Camadro,E.L. Con el objeto de explorar el uso de hidrofitas en ensayos de genotoxicidad de contaminantes acuaticos, como complemento o reemplazo del uso tradicional y estandarizado de macrofitas terrestres (Allium cepa (L.), Pisum sativum (L.), Tradescantia sp., entre otras), se llevo a cabo un estudio preliminar en un intento por seleccionar al menos una especie taxonomica silvestre dulceacuicola que debe cumplir los siguientes requisitos: poseer numero cromosomico basico bajo, indice mitotico (IM) elevado y ser facil de propagar en laboratorio. Para tal fin, se realizaron tres campanas de relevamiento de vegetacion en la Laguna La Brava (provincia de Buenos Aires, Argentina). Se recolectaron semillas de las especies mas representativas, y se dispusieron en placas de... Tipo: Info:eu-repo/semantics/article Palavras-chave: Macrofitas acuaticas nativas; Numero cromosomico basico; Indice mitotico; Bioensayos citogeneticos; Genotoxicidad. Ano: 2015 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1852-62332015000100002 Registros recuperados: 4 Primeira ... 1 ... Última

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