Artículos de revista: Envíos recientes
Mostrando ítems 21-40 de 541
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Evidence of 2n microspore production in a natural diploid population of Turnera sidoides subsp. carnea and its relevance in the evolution of the T. sidoides (Turneraceae) autopolyploid complex
(Sociedad Botánica de Japón, 2012-05-31)Turnera sidoides is a complex of distylous perennial rhizomatous herbs that includes five subspecies. Since polyploidy has played a prominent role within this species (x = 7), ongoing studies in T. sidoides are focused on ... -
Perianth organs in Nymphaeaceae : comparative study on epidermal and structural characters
(Sociedad Botánica de Japón, 2017-07-21)The perianth organs of six species of Nymphaeaceae, representing Euryale, Nymphaea and Victoria, were studied on the basis of macroscopical, micromorphological, and anatomical characters. The aims were to determine whether ... -
DNA content in South American endemic species of Lathyrus
(Sociedad Botánica de Japón, 2014-05-20)The genome size was surveyed in 13 Notolathyrus species endemic to South America by flow cytometry and analyzed in an evolutionary and biogeographic context. A DNA content variation of 1.7-fold was registered, and four ... -
Relative DNA content in diploid, polyploid, and multiploid species of Paspalum (Poaceae) with relation to reproductive mode and taxonomy
(Sociedad Botánica de Japón, 2016-03-10)It is generally accepted that polyploids have downsized basic genomes rather than additive values with respect to their related diploids. Changes in genome size have been reported in correlation with several biological ... -
Karyotype characterization and evolution in South American species of Lathyrus (Notolathyrus, Leguminosae) evidenced by heterochromatin and rDNA mapping
(Sociedad Botánica de Japón, 2015-06-28)Notolathyrus is a section of South American endemic species of the genus Lathyrus. The origin, phylogenetic relationship and delimitation of some species are still controversial. The present study provides an exhaustive ... -
Diferential DNA methylation and gene expression during development of reproductive and vegetative organs in Ilex species
(Sociedad Botánica de Japón, 2021-03-23)Diferential epigenetic (DNA cytosine methylation) and gene expression patterns were investigated in reproductive and veg- etative organs from Ilex paraguariensis and I. dumosa, at distinct developmental stages. We aimed ... -
Colchicine, trifluralin, and oryzalin promoted development of somatic embryos in Ilex paraguariensis (Aquifoliaceae)
(Springer Nature, 2002)A protocol for somatic embryogenesis and plant regeneration of Ilex paraguariensis St. Hil. from embryos cultures was developed. Heart stage zygotic embryos were removed from seeds of immature, light green fruit and ... -
GG13 : a candidate gene related to seed development and viability from apomictic Paspalum notatum
(Springer Nature, 2021)One way to transfer apomixis (asexual reproduction through seeds) to major crops could be through genetic transformation, but for this a set of transgenes that triggers each of the involved processes should be generated. ... -
Evaluating general combining ability for agromorphological traits in tetraploid bahiagrass
(Springer Nature, 2021)Recurrent selection based on combining ability has been successfully used in tetraploid bahigrass (Paspalum notatum Flu ̈gge ́) to accumulate heterotic effects and exploit hybrid vigor. However, its efficiency depends on ... -
Tetraploid bahiagrass hybrids : breeding technique, genetic variability and proportion of heterotic hybrids
(Springer Nature, 2010)Manipulating apomixis for fixing tetraploid bahiagrass (Paspalum notatum Flüggé) hybrids exhibiting superior agronomic characteristics would be a valuable tool for the genetic improvement of this species. The objectives ... -
Flowering of Guadua trinii (Poaceae, Bambusoideae, Bambuseae)
(Jardim Botânico do Rio de Janeiro, 2020)Flowering in bamboo is an unusual event. Documenting flowering individuals or populations provides valuable information about bamboo life cycles. Guadua trinii is endemic to northeastern Argentina, southern Brazil, Paraguay ... -
A new species and a new combination in the South American genus Lessingianthus (Vernonieae, Asteraceae)
(Magnolia Press, 2014-12-02)A detailed analysis of the type material of Vernonia oxyodonta clearly indicates that it is morphologically identical to Lessingianthus glabratus because it has glabrous leaves, pedunculate heads at the end of the ... -
Justicia floribunda (Acanthaceae), nueva combinación y nueva cita para la flora argentina
(Instituto de Botánica Darwinion, 1998-05-17)Peichoto, M. C., Ezcurra, C. & Wasshausen, D. 1998. Justiciafloribunda (Acanthaceae), new combination and new record for the flora of Argentina. Darwiniana 35: 151-154. Justicia floribunda (C Koch) Wasshausen nov. comb, ... -
Marasmius magnus (Marasmiaceae, Basidiomycota) en Argentina
(Instituto de Botánica Darwinion, 2021-08-25)En el marco de un estudio sobre la diversidad de hongos agaricoides de la Selva Atlántica argentina, se colectaron especímenes que se corresponden morfológica y filogenéticamente con Marasmius magnus, una especie recientemente ... -
Estudios morfo-anatómicos en especies de Justicia (Acanthaceae) del noreste argentino
(Instituto de Botánica Darwinion, 1998-10-10)Peichoto, M. C. 1998. Morpho-anatomic studies in species of Justicia (Acanthaceae) from northeastem Argentina. Darwiniana 36: 13-28. This paper presents the comparative analysis of the seed morphology and stem structure ... -
Sobre la identidad de Schizachyrium scabriflorum (Poaceae: Andropogoneae)
(Instituto de Botánica Darwinion, 2002-11-20)Peichoto, M. C. 2002. On the identity of Schizachyrium scabriflorum (Poaceae: Andropogoneae). Darwiniana 40(1-4): 103-105. Schizachyrium scabriflorum is described and illustrated, and its differences with S. sanguineum are ... -
Mycena holoporphyra (Mycenaceae, Agaricomycetes), primer registro para la Argentina
(Instituto de Botánica Darwinion, 2011-11-09)Niveiro, N.; O. F. Popoff & E. O. Albertó. 2011. Mycena holoporphyra (Mycenaceae, Agaricomycetes), primer registro para la Argentina. Darwiniana 49(2): 252-256. Es el primer registro de Mycena holoporphyra para la micobiota ... -
Nuevos registros y lectotipificaciones en Richardia (Rubiaceae) para la flora del Cono Sur de Sudamérica
(Instituto de Botánica Darwinion, 2022-07-02)Richardia es un género Neotropical, perteneciente a la tribu Spermacoceae, familia Rubiaceae. Cuenta con 16 especies que se distribuyen desde el sudeste de los Estados Unidos de América hasta Argentina y Uruguay. Como parte ... -
Aportes para la flora de Argentina : lectotipificaciones, nuevos sinónimos y registros en Borreria (Rubiaceae)
(Instituto de Botánica Darwinion, 2022-10-17)Como parte de los avances en los resultados del Proyecto Flora Argentina sobre la familia Rubiaceae, se presentan novedades taxonómicas y nomenclaturales de especies del género Borreria. Se designan lectotipos para cinco ... -
Evolution of genome space occupation in ferns : linking genome diversity and species richness
(Oxford University Press, 2023-01-01)Background and Aims: The dynamics of genome evolution caused by whole genome duplications and other processes are hypothesized to shape the diversification of plants and thus contribute to the astonishing variation in ...
