A5003736603- Plant Taxonomy and Phylogenetics
- Plant and fungal interactions
- Botanical Research and Chemistry
- Botanical Research and Applications
- Chromosomal and Genetic Variations
- Radio Astronomy Observations and Technology
- Cosmology and Gravitation Theories
- Bioenergy crop production and management
- Occupational Health and Safety in Workplaces
- Geophysics and Gravity Measurements
- Seedling growth and survival studies
- Astrophysics and Cosmic Phenomena
- Heavy Metals in Plants
- Historical and Contemporary Political Dynamics
- Plant Reproductive Biology
- Stress and Burnout Research
- Neutrino Physics Research
- Education and Teacher Training
- Educational Practices and Policies
- Global Peace and Security Dynamics
- Occupational Health and Safety Research
- Global Trade and Competitiveness
- International Law and Human Rights
- Radiation Detection and Scintillator Technologies
- Superconducting and THz Device Technology
Universidad Andrés Bello
2023
Max Planck Institute for Nuclear Physics
2023
Consejo Nacional de Investigaciones Científicas y Técnicas
2010-2022
National University of the Northeast
2012-2022
Centro Científico Tecnológico - Nordeste
2004-2022
Tecnológico Nacional de México
2022
Universidad Católica de la Santísima Concepción
2022
Universidad de La Frontera
2015
Instituto de Botânica
2012
Valparaiso University
2010
Paspalum plicatulum Michx. is a wild forage grass species. The common races are tetraploid and apomictic, while sexual diploid representatives have been reported sporadically. Objectives of this study were to induce 4 x individuals from diploids, determine the capacity for hybridization with other apomictic species closely related P. , thus create material cross compatible Plicatula group . Two induced plants recovered germinating 2 seeds treated 24 h colchicine. Bivalent quadrivalent...
Grama-tio-pedro (Paspalum oteroi Swallen) is a rare stoloniferous grass of the Plicatula group Paspalum, well adapted to continuous grazing in areas subject seasonal flooding Pantanal region, central western Brazil. The species facultative apomictic (asexual reproduction by seed) tetraploid, sporadically cultivated on farms, propagated either cuttings or seed. Due its potential for extensive cultivation and forage quality, appears as candidate genetic improvement within through plant...
ABSTRACT The Plicatula group of the grass genus Paspalum contains about 30 species. Most are tetraploid and reproduce by apomixis, though some them contain sexual diploid races. We crossed a colchicine‐induced autotetraploid plant brownseed paspalum (Paspalum plicatulum Michx.) with apomictic P. guenoarum Arechav., also from group. Crossability was 35% progeny showed morphological characteristics intermediate to those parents but resembling more male parent. random amplified polymorphic DNA...
Traditionally, tetraploid Paspalum notatum was considered an obligate or a facultative apomict according to cytoembryological analyses. The degree of facultativeness usually determined by the relative amount mature ovules bearing aposporous meiotic (sexual) embryo sacs, both together. We established, through progeny tests conducted with aid AFLP markers, residual sexuality expressed in four selected biotypes. results showed it be substantially and significantly lower than predicted previous...
The diploid cytotype of Paspalum rufum (Poaceae) reproduces sexually and is self-sterile; however, recurrent autopolyploidization through 2n + n fertilization the ability for reproduction via apomixis have been documented in one genotype species. objectives this work were to analyse variation functionality components genotypes P. identify individuals with contrasting reproductive behaviours. Samples five from each three natural populations (designated R2, R5 R6) used. Seeds obtained after...
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...
Aposporous apomictic plants form clonal maternal seeds by inducing the emergence of non-reduced (2n) embryo sacs in ovule nucellus and development embryos parthenogenesis. In previous work, we reported a plant-specific TRIMETHYLGUANOSINE SYNTHASE 1 (TGS1) gene (PN_TGS1-like) showing expression levels positively correlated with sexuality rates facultative Paspalum notatum. PN_ TGS1-like displayed contrasting situ hybridization patterns sexual plant ovules from premeiosis to anthesis. Here...
Abstract Background Despite representing the largest fraction of animal life, number insect species whose genome has been sequenced is barely in hundreds. The order Dermaptera (the earwigs) suffers from a lack genomic information despite its unique position as one basally derived groups and importance agroecosystems. As part national educational outreach program genomics, plan was formulated to engage participation high school students sequencing project. Students twelve schools across Chile...
Progeny tests employing molecular markers allow the identification of individuals originated by sexual means among offspring a facultative apomict. The objective this work was to evaluate effect pollination timing on proportion sexually formed in progenies apomictic Paspalum notatum genotype. families approx. 30 plants each were generated at five different times: 1–3 d pre‐anthesis; anthesis; and 2, 4 6 post‐anthesis. Cytoembryological analyses indicated that 17 % ovules carried meiotic...