A5091228980- Banana Cultivation and Research
- Cassava research and cyanide
- Genetic diversity and population structure
- Plant and animal studies
- Growth and nutrition in plants
- Potato Plant Research
- Agricultural and Food Sciences
- Rural Development and Agriculture
- Soil Management and Crop Yield
- Seed Germination and Physiology
- Plant Pathogens and Fungal Diseases
- Botanical Research and Applications
- Genetics and Plant Breeding
- Plant Taxonomy and Phylogenetics
- Rice Cultivation and Yield Improvement
- Amazonian Archaeology and Ethnohistory
- Plant tissue culture and regeneration
- Genomics and Phylogenetic Studies
- Identification and Quantification in Food
- Genetic Mapping and Diversity in Plants and Animals
- Isotope Analysis in Ecology
- Cocoa and Sweet Potato Agronomy
- Agriculture, Land Use, Rural Development
- Oil Palm Production and Sustainability
- Fish biology, ecology, and behavior
Universidade de São Paulo
2015-2024
Universidade Federal Rural de Pernambuco
2024
Universidade Federal do Amazonas
2024
Instituto Federal de Educação, Ciência e Tecnologia de Pernambuco
2024
Agência Paulista de Tecnologia dos Agronegócios
2024
Secretaria de Agricultura e Abastecimento
2006-2023
Hospital Universitário da Universidade de São Paulo
2021
Universidade Federal do Maranhão
2021
Institute of Animal Science and Pastures
1994-2014
Planta
1995-2014
We used simple sequence repeat (SSR) markers to investigate the genetic diversity of 78 sweet potato (Ipomoea batatas) accessions (58 landraces and 20 putative clones) from traditional agricultural households 19 local communities in Vale do Ribeira, São Paulo, Brazil. Eight SSR loci were assessed using 6% (w/v) polyacrylamide gels stained with silver nitrate genotyped considering presence or absence bands. The results subjected analysis molecular variance (AMOVA), cluster principal...
Based on nine microsatellite loci, the aim of this study was to appraise genetic diversity 42 cassava (Manihot esculenta) landraces from selected regions in Brazil, and examine how variety is distributed according origin several municipalities states Minas Gerais, São Paulo, Mato Grosso do Sul, Amazonas Grosso. High values were found among five above-mentioned regions, with 3.3 alleles per locus an average, a high percentage polymorphic loci varying 88.8% 100%, average 0.265 for observed...
Microsatellite markers have proved to be useful in genetic diversity assessments of sweetpotato (Ipomoea batatas) but practical DNA extraction methods ensure good quality and quantity for these studies are yet established. This study compares the efficiency three modified methodologies six landraces using CTAB buffer regard purity quantification microsatellite band patterns. All yielded satisfactory results, method based leaf tissue macerated liquid nitrogen was deemed more adequate because...
Abstract Knowledge about genetic diversity is essential to promote effective use and conservation of crops, because it enables farmers adapt their crops specific needs the raw material for breeding. Manioc ( Manihot esculenta ssp. ) one world’s major food has potential help achieve security in context on-going climate changes. We evaluated single nucleotide polymorphisms traditional Brazilian manioc varieties conserved gene bank Luiz de Queiroz College Agriculture, University São Paulo....
The lowlands of South America appear to be remarkably important in the evolutionary history maize, due new evidence that suggests maize dispersed from Mexico and arrived this region a state partial domestication. This study aimed identify dispersal patterns genetic diversity part continent.A total 170 accessions were characterized with 4398 single nucleotide polymorphisms (SNPs) analysed determine if was associated types endosperm indigenous language families.Four groups identified...
Platonia insignis is a fruit tree native to Brazil of increasing economic importance, with its pulp trading among the highest market values. This study aimed evaluate structure and genomic diversity P. (bacurizeiro) accessions from six locations in Brazilian States Roraima, Amazonas, Pará (Amazon biome), Maranhão (Cerrado biome). A total 2031 SNP markers were obtained using genotyping-by-sequencing (GBS), which 625 outlier SNPs identified. High genetic was observed, most variability (59%)...
• Background and Aims The aim of this paper was to verify the variation in loss seed dormancy during after-ripening interspecific interpopulation variability degree seven wild two cultivated rice species comprising 21 populations cultivars. Methods Four from South America, Oryza glumaepatula, O. latifolia, grandiglumis alta, sativa cultivars were tested one experiment. In a second experiment, five species, punctata, eichingeri, O.rufipogon, latifolia (O. glaberrima) evaluated. Initial...
The phenotypic diversity of sweet potato (Ipomoea batatas) landraces was assessed using morphological traits, verifying how this is distributed among the households and settlements Vale do Ribeira, Brazil. A total 74 accessions, involving 53 landraces, collected from 30 18 that practice traditional agriculture in municipalities Iguape, Ilha Comprida, Cananeia, as well four commercial varieties acquired markets Iguape Piracicaba, were evaluated under an ex situ experimental condition SP, Nine...
The agro-morphological characterization is fundamental in order to provide information for plant breeding programs. aim of the present study was characterize 146 accessions upland rice (Oryza sativa L.), based on qualitative and quantitative descriptors. experiment conducted Recife, state Pernambuco, Brazil, using a randomized block design with three replicates. Polymorphism observed among 12 14 characters evaluated, whereas significant differences (p < 0.05) were 11 analysed traits. Genetic...
The objective of this work was to characterize morphologically and molecularly the genetic diversity cassava accessions, collected from different regions in Brazil. A descriptive analysis made for 12 morphological traits 419 accessions. Data transformed into binary data cluster molecular variance. higher proportion white or cream (71%) root cortex color found, while flesh colors were predominantly (49%) (42%). Four accession groups classified by analysis, but they not grouped according their...
Amazonia is a major world centre of plant domestication, but little known about how the crops were dispersed across region. Manioc (Manihot esculenta) was domesticated in south-western Amazon basin, and most important staple food crop that originated Amazonia. Current contrasting distributions may reflect distinct histories dispersal bitter sweet manioc landraces. To produce new insights into evolutionary history crop, we investigated contemporary genetic diversity structure along Amazonian rivers.
Astrocaryum aculeatum is a palm tree species native to the tropical regions of South America, exploited commercially by local farmers for pulp extracted from its fruits. The objective this research was compare genetic diversity between adult plants and seedlings open-pollinated seeds, quantify pollen flow dispersal, spatial structure, effective size population that has been continuously harvested study carried out in natural A. distributed over approximately 8 ha State Amazonas (Brazil),...
The potato crop has a very narrow genetic base, so the use of molecular markers is important tool in characterization germplasm banks and evaluation divergence. objective this study was to identify, using microsatellite or simple sequence repeat (SSR) markers, 38 accessions from two collections commercial cultivars. For 10 loci were used, generating total 46 alleles, which analyzed as binary data. A cluster analysis performed with Jaccard´s similarity coefficient UPGMA method, software...
To characterize the genetic variability among species and populations of South American wild rice, eleven Oryza glumaepatula, seven O. grandiglumis, four latifolia one alta, from Brazil Argentina, were evaluated. A greenhouse experiment was conducted in completely randomized blocks with 23 treatments. Twenty morphoagronomic traits assessed. Univariate analyses performed 16 quantitative partitioning within species. Significant differences (p<0.001) between observed for all as well The most...
Knowledge of the genetic structure and diversity natural populations is important in developing strategies for situ ex conservation. We used eight microsatellite loci to estimate investigate within between population variation eleven Brazilian wild rice (Oryza glumaepatula) populations. The study showed following parameters: average number 3.1 alleles per locus; 77.3% polymorphic loci; 0.091 observed heterozygosity 0.393 gene diversity. F-statistics detected by were: F ST = 0.491 (and R...