A5045137997- Plant Taxonomy and Phylogenetics
- Plant and fungal interactions
- Botanical Research and Applications
- Botanical Research and Chemistry
- Bioenergy crop production and management
- Turfgrass Adaptation and Management
- Chromosomal and Genetic Variations
- Ecology and Vegetation Dynamics Studies
- Pasture and Agricultural Systems
- RNA modifications and cancer
- Botany and Plant Ecology Studies
- Berry genetics and cultivation research
- Plant Reproductive Biology
- CRISPR and Genetic Engineering
- Tree Root and Stability Studies
- Genetic diversity and population structure
- Leaf Properties and Growth Measurement
- Genetics and Neurodevelopmental Disorders
- Seedling growth and survival studies
- Pluripotent Stem Cells Research
- Organ Donation and Transplantation
- Archaeology and Natural History
- Gut microbiota and health
- Mycotoxins in Agriculture and Food
- Reproductive tract infections research
Consejo Nacional de Investigaciones Científicas y Técnicas
2014-2025
National University of the Northeast
2014-2025
Louisiana State University Agricultural Center
2022
Instituto de Botânica
2021
Czech Academy of Sciences, Institute of Botany
2021
Centre Hospitalier Universitaire de Montpellier
2016
National University of Rosario
2012
Centro Científico Tecnológico - Nordeste
2004
Summary Meiotic and apomictic reproductive pathways develop simultaneously in facultative aposporous species, compete to form a seed as final goal. This developmental competition was evaluated tetraploid genotypes of P aspalum malacophyllum order understand the low level sexuality populations. Cyto‐embryology on ovules, flow cytometry seeds progeny tests by DNA fingerprinting were used measure relative incidence each meiotic or pathway along four different stages plant's life cycle, namely...
Niche divergence between polyploids and their lower ploidy progenitors is one of the primary mechanisms fostering polyploid establishment adaptive divergence. However, within-species chromosomal reproductive variability have usually been neglected in community ecology biodiversity analyses even though they recognized to play a role diversification lineages. We used Paspalum intermedium, grass species with diverging genetic systems (diploidy vs. autopolyploidy, allogamy autogamy sexuality...
ABSTRACT Breeding procedures developed for apomictic species are based on the idea of fixing superior hybrids by apomixis. However, scarce information is available about occurrence heterosis in hybrids. The objective was to generate a group apomixis‐segregating tetraploid bahiagrass ( Paspalum notatum Flüggé) families, evaluate series agronomic and morphological traits, determine level apospory expressivity among hybrids, estimate genetic distance parents its relationship expressivity. In...
Abstract In systems alternating between sexual and asexual reproduction, sex increases under unfavorable environmental conditions. plants producing (apomictic) seeds, studies on the influence of factors are equivocal. We used Paspalum intermedium to study effects expression apomictic developments, resulting reproductive fitness variables. Flow cytometric embryological analyses were performed characterize ploidy modes, local climatic conditions ovule seed frequencies determined. Seed set...
Exploring the genetic diversity and reproductive strategies of Paspalum species is essential for advancing forage grass improvement. We compared morpho-phenological, molecular, genotypic variation in five tetraploid with contrasting mating systems modes. Contrary to previous findings, selfing (Paspalum regnellii P. urvillei) outcrossing (P. durifolium ionanthum) exhibited similar phenotypic patterns, low intrapopulation variability no morphological differentiation among populations. The...
Background/Objectives: Paspalum notatum is a key multipurpose species native to American grasslands. This study provides, for the first time, detailed karyotype analysis of diploid (2n = 2x 20) and tetraploid 4x 40) accessions P. notatum, most common cytotypes within species. Methods: The constitutive heterochromatin patterns revealed using CMA-DA-DAPI staining genome size estimations are novel contributions understanding N in Paspalum. Results: Chromosomes were small (1.1–2.3 µm), with...
Among plants, where evolutionary changes unfold across millennia and innovations are etched into the genome in silence, polyploidy stands as one of most transformative forces known to science [...]
The improvement of bahiagrass, Paspalum notatum Flüggé, has been inhibited by reduced levels genetic diversity in sexual tetraploid germplasm. A few experimental genotypes (ESTGs) have generated chromosome doubling, but these plants typically exhibit low vigor. objectives this work were to generate and characterize the ploidy level, mode reproduction, fertility a novel 308 individual synthetic population (SSTP) developed intercrossing 29 F 1 hybrids originated hybridizing several naturally...
Journal Article BIII Progeny (2n + n) From Apomictic Paspalum notatum Obtained Through Early Pollination Get access E. J. Martínez, Martínez Institute de Botànica del NordesteCasilla Correo 209, 3400 Corrientes, Argentina Search for other works by this author on: Oxford Academic PubMed Google Scholar F. Espinoza, Espinoza C. L. Quarín of Heredity, Volume 85, Issue 4, July 1994, Pages 295–297, https://doi.org/10.1093/oxfordjournals.jhered.a111460 Published: 01 1994 history Received: 02 1993...
ABSTRACT The tetraploid cytotype of Paspalum simplex Morong has a wide geographical distribution and reproduces by apomixis while the diploid grows in restricted area northern Argentina behaves as cross‐pollinated. objective was to evaluate genetic diversity among within natural populations P. growing sympatry allopatry studying phenotypic variability DNA polymorphisms. Twenty‐three traits 10 inter‐simple sequence repeat (ISSR) molecular markers were used for evaluating present six . Two...
ABSTRACT Paspalum is considered a genetic model for studying the sources of genotypic variability and breeding techniques in apomictic plants. simplex warm‐season forage grass that well represents genus since it contains different ploidy levels apomixis linked to polyploidy. The objective was evaluate diversity present within among polyploid populations P. . Germplasm collected from 17 sites covering species’ region natural distribution. at molecular level evaluated using ISSR markers....