Artículos de revista
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Phylogenetics of Gratioleae (Plantaginaceae) : paraphyly of Stemodia and its implications for generic circumscriptions, with insights from floral evolution
(Wiley Blackwell Publishing, Inc, 2022)Gratioleae are the most species-rich tribe of Plantaginaceae in the tropics, spanning c. 30 genera and > 300 species, with a wide range of morphological variation and ecological strategies. As a first effort towards a ... -
Insights into the morphology and evolution of orbicules in the Spermacoce clade (Spermacoceae-Rubiaceae) and implications for systematics
(Wiley Blackwell Publishing, Inc, 2023)The orbicules are tiny structures of sporopollenin that occur on the interior wall of anthers in several groups of plants, and they are associated with pollen grains and tapetal cells. Although their function remains still ... -
Carpellary appendages in Nymphaea and Victoria (Nymphaeaceae) : evidence of their role as osmophores based on morphology, anatomy and ultrastructure
(Wiley Blackwell Publishing, Inc, 2019)In flowers of Nymphaea and Victoria, carpellary appendages are regarded as structures related to pollination by deceit of night-blooming species. In this study, the anatomy, histochemistry and ultrastructure of carpellary ... -
Checklist of the argentinean agaricales 6. Paxillaceae, Gomphidiaceae, Boletaceae and Russulaceae
(Mycotaxon, Ltd., 2013-07-01)A checklist of species belonging to families Paxillaceae, Gomphidiaceae, Boletaceae, and Russulaceae was made for Argentina. The list includes all species published up to 2011. Sixteen genera and 54 species are recorded: ... -
Presence of Leucocoprinus cretaceus and L. fragilissimus in Argentina
(Mycotaxon, Ltd., 2012-07-01)Leucocoprinus cretaceus and L. fragilissimus are recorded for the first time in Argentina. These species are described and illustrated, and a key to the Argentinean species of this genus is presented. -
Mycena moconensis, a new species in section Polyadelphia from Argentina
(Mycotaxon, Ltd., 2012-01-01)A new agaric species, Mycena moconensis, is described from Paranaense Rain Forest, Argentina. This species is characterized by small bicoloured basidiomata with yellow to orange yellow or golden pilei and magenta to purple ... -
Clitocybula azurea in Argentina : redescription and phylogenetic position
(Mycotaxon, Ltd., 2021-01-01)Clitocybula azurea, which was described by Singer in 1973 from Brazil andVenezuela, is characterized by its bluish to grayish blue tinges, narrow lamellae, cespitose and lignicolous habit, and small, amyloid, subglobose ... -
Hygroaster iguazuensis sp. nov. and a new continental record for Lentinus similis
(Mycotaxon, Ltd., 2005-01-01)Hygroaster iguazuensis is proposed as a new species and Lentinus similis is a new record for the Americas. Both fungi are fully described and illustrated. -
Karyotype stability and genome-specific nucleolar dominance in peanut, its wild 4 ancestor, and a synthetic AABB polyploid
(Crop Science Society of America, 2018-07)Allopolyploidy is a significant evolutionary process involved in the origin of many crops, including peanut (Arachis hypogaea L.). The process usually results in a series of chromo- some, genomic and epigenetic rearrangements ... -
High temperatures around flowering in maize : effects on photosynthesis and grain yield in three genotypes
(Crop Science Society of America, 2016-09)To aid breeding for heat-tolerant germplasm we analyzed the effects of high temperatures on the CO2 exchange rate (CER), crop growth rate (CGR), kernel number (KN), and grain yield (GY) in a 30-d period bracketing flowering. ... -
Occurrence of 2n microspore production in diploid interspecific hybrids between the wild parental species of peanut (Arachis hypogaea L., Leguminosae) and its relevance in the genetic origin of the cultigen
(Crop Science Society of America, 2020-06)Unreduced (2n) gametes are the driving force that leads to polyploidization of plants in nature and an important tool for ploidy breeding. Peanut (Arachis hypogaea L., Leguminosae) seems most likely to have originated by ... -
Breeding tetraploid Paspalum simplex : hybridization, early identification of apomicts, and impact of apomixis on hybrid performance
(Crop Science Society of America, 2019-03)Apomictic grasses predominate among tropical forages, and specific breeding techniques are needed for their genetic improvement. The objectives of this study were (i) to generate hybrids by crossing tetraploid sexual and ... -
Mode of reproduction and meiotic chromosome behavior in acroceras macrum
(Crop Science Society of America, 2020-01)Acroceras macrum Stapf is a high-quality C3 grass species adapted to the subtropics. It is a valuable forage resource in frequently flooded environments. The objectives were to analyze the type of polyploidy, mode of ... -
The role of triploids in the origin and evolution of polyploids of Turnera sidoides complex (Passifloraceae, Turneroideae)
(Sociedad Botánica de Japón, 2017-08-22)Triploids can play an important role in polyploid evolution. However, their frequent sterility is an obstacle for the origin and establishment of neotetraploids. Here we analyzed the microsporogenesis of triploids (x = 7) ... -
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 ...
