Rodrigo Gazaffi

ORCID: 0000-0001-6549-4222
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About
Contact & Profiles
Research Areas
  • Sugarcane Cultivation and Processing
  • Genetics and Plant Breeding
  • Genetic Mapping and Diversity in Plants and Animals
  • Biofuel production and bioconversion
  • Growth and nutrition in plants
  • Phytoplasmas and Hemiptera pathogens
  • Plant Disease Resistance and Genetics
  • Plant Pathogens and Fungal Diseases
  • Banana Cultivation and Research
  • Cocoa and Sweet Potato Agronomy
  • Plant Pathogenic Bacteria Studies
  • Genetic and phenotypic traits in livestock
  • Natural Products and Biological Research
  • Rice Cultivation and Yield Improvement
  • Plant biochemistry and biosynthesis
  • Agricultural and Food Sciences
  • Genetic diversity and population structure
  • Plant pathogens and resistance mechanisms
  • Innovations in Aquaponics and Hydroponics Systems
  • Soybean genetics and cultivation
  • Plant Virus Research Studies
  • Oil Palm Production and Sustainability
  • Wheat and Barley Genetics and Pathology
  • Coffee research and impacts
  • Spectroscopy and Chemometric Analyses

Universidade Federal de São Carlos
2014-2024

Universidade de São Paulo
2011-2024

Anhanguera (Brazil)
2022-2024

Centro Universitario de Araras Dr Edmunso Ulson
2019-2021

Methodist University of Piracicaba
2011

Abstract Brazil is the world’s largest producer of sugarcane and one leading suppliers sugar ethanol worldwide. In 2019–2020 crop season, country produced 642.7 million tons in a harvest area 8.44 hectares. Historically, breeding has contributed continuously to increasing yields by regularly releasing superior cultivars for use Brazilian industry. last 40 years, an average annual increase 155.7 kg ha −1 yield been reported, about half which may be attributed programs. However, due size...

10.1007/s12355-021-00951-1 article EN cc-by Sugar Tech 2021-02-16

Many plant species of great economic value (e.g., potato, wheat, cotton and sugarcane) are polyploids. Despite the essential roles autopolyploid plants in human activities, our genetic understanding these is still poor. Recent progress instrumentation biochemical manipulation has led to accumulation an incredible amount genomic data. In this study, we demonstrate for first time a successful analysis highly polyploid genome (sugarcane) by quantitative single-nucleotide polymorphism (SNP)...

10.1038/srep03399 article EN cc-by-nc-sa Scientific Reports 2013-12-02

Abstract Low soil phosphorus (P) availability is a major constraint for crop production in tropical regions. The rice (Oryza sativa) protein kinase, PHOSPHORUS-STARVATION TOLERANCE1 (OsPSTOL1), was previously shown to enhance P acquisition and grain yield under deficiency. We investigated the role of homologs OsPSTOL1 sorghum (Sorghum bicolor) performance low P. Association mapping undertaken two association panels phenotyped uptake, root system morphology architecture hydroponics biomass...

10.1104/pp.114.243949 article EN cc-by PLANT PHYSIOLOGY 2014-09-02

Sugarcane (Saccharum spp.) is predominantly an autopolyploid plant with a variable ploidy level, frequent aneuploidy and large genome that hampers investigation of its organization. Genetic architecture studies are important for identifying genomic regions associated traits interest. However, due to the genetic complexity sugarcane, practical applications tools have been notably delayed in this crop, contrast other crops already advanced marker-assisted selection (MAS) selection....

10.1186/s12864-016-3383-x article EN cc-by BMC Genomics 2017-01-11

Sugarcane-breeding programs take at least 12 years to develop new commercial cultivars. Molecular markers offer a possibility study the genetic architecture of quantitative traits in sugarcane, and they may be used marker-assisted selection speed up artificial selection. Although performance sugarcane progenies breeding are commonly evaluated across range locations harvest years, many QTL detection methods ignore two- three-way interactions between QTL, harvest, location. In this work,...

10.1007/s00122-011-1748-8 article EN cc-by-nc Theoretical and Applied Genetics 2011-12-12

The rubber tree (Hevea spp.), cultivated in equatorial and tropical countries, is the primary plant used natural production. Due to genetic physiological constraints, inbred lines of this species are not available. Therefore, alternative approaches required for characterization species, such as mapping full-sib crosses derived from outbred parents. In present study, an integrated map was obtained a cross family with simple sequence repeats (SSRs) expressed tag (EST-SSR) markers, which can...

10.1371/journal.pone.0061238 article EN cc-by PLoS ONE 2013-04-19

Citrus breeding programs have many limitations associated with the species biology and physiology, requiring incorporation of new biotechnological tools to provide possibilities. Diversity Arrays Technology (DArT) markers, combined next-generation sequencing, wide applicability in construction high-resolution genetic maps quantitative trait locus (QTL) mapping. This study aimed construct an integrated map using full-sib progeny derived from Murcott tangor Pera sweet orange DArTseq™ molecular...

10.1186/s12864-017-3629-2 article EN cc-by BMC Genomics 2017-04-12

Abstract Background The development of sugarcane as a sustainable crop has unlimited applications. is one the most economically viable for renewable energy production, and CO 2 balance. Linkage maps are valuable tools understanding genetic genomic organization, particularly in due to its complex polyploid genome multispecific origins. overall objective our study was construct novel linkage map, compiling AFLP EST-SSR markers, generate data on distribution markers anchored sequences scIvana_1...

10.1186/1471-2156-13-51 article EN cc-by BMC Genomic Data 2012-06-28

A wide array of molecular markers has been used to investigate the genetic diversity among common bean species. However, best combination for studying such cultivars yet be determined. Few reports have examined carioca bean, commercially one most important beans in Brazil. In this study, we usefulness two marker systems (simple sequence repeats - SSRs and amplified fragment length polymorphisms AFLPs) assessing beans. The amount information provided by Roger's modified distance was analyze...

10.1590/s1415-47572011000100017 article EN cc-by Genetics and Molecular Biology 2011-01-01

Abstract One of the current challenges tropical fruit crop improvement is to incorporate molecular marker‐based approaches into conventional breeding programmes. This study was designed build an integrated genetic map sweet passion ( Passiflora alata ), a diploid (2 n = 18) outcrossing species which greatly appreciated for in natura consumption, and reported inspire cosmetic pharmaceutical companies create plant‐derived compounds. With this mind, full‐sib family 180 individuals genotyped...

10.1111/aab.12028 article EN Annals of Applied Biology 2013-04-04

Because of the continuous introduction germplasm from abroad, some collections have a high number accessions, making it difficult to explore genetic variability present in bank for conservation and breeding purposes. Therefore, aim this study was quantify analyze structure among 500 common bean accessions construct core collection. A total 58 SSRs were used purpose. The polymorphism information content (PIC) 180 selected compose collection ranged 0.17 0.86, discriminatory power (DP) 0.21...

10.1590/s1415-475738120140126 article EN cc-by Genetics and Molecular Biology 2015-03-01

Quantitative trait loci (QTL) mapping is an important approach for the study of genetic architecture quantitative traits. For perennial species, inbred lines cannot be obtained due to inbreed depression and a long juvenile period. Instead, linkage can performed by using full-sib progeny. This creates complex scenario because both markers QTL alleles have different segregation patterns as well phases between them. We present two-step method progeny based on composite interval (i.e., with...

10.1007/s11295-013-0664-2 article EN cc-by Tree Genetics & Genomes 2014-04-22

Abstract Quantitative trait locus (QTL) mapping contributes to sugarcane ( Saccharum spp.) breeding programs by providing information about the genetic effects, positioning and number of QTLs. Combined with marker-assisted selection, it can help breeders reduce time required develop new varieties. We performed a QTL study for important agronomic traits in using composite interval method outcrossed species. A approach allowing 1:2:1 segregation ratio different ploidy levels SNP markers was...

10.1007/s10681-016-1746-7 article EN cc-by Euphytica 2016-07-14

Rubber tree is cultivated in mainly Southeast Asia and by far the most significant source of natural rubber production worldwide. However, genetic architecture underlying primary agronomic traits this crop has not been widely characterized. This study aimed to identify quantitative trait loci (QTLs) associated with growth latex using a biparental population established suboptimal conditions Brazil. A full-sib composed 251 individuals was developed from crossing two high-producing Asiatic...

10.1186/s12870-018-1450-y article EN cc-by BMC Plant Biology 2018-10-10

Sugarcane breeding programs require 15 years of experimentation to create more productive cultivars, and estimates genetic progress can indicate the efficiency programs. In this study, we used a diversity panel, Brazilian Panel Genotypes (BPSG), with following objectives: (i) estimate, through mixed model, adjusted means parameters ten traits evaluated over three harvest years; (ii) estimate genotypic correlation among those traits; (iii) six decades breeding. The heritabilities ranged from...

10.3390/agriculture11060533 article EN cc-by Agriculture 2021-06-09

Abstract Brazil is blast disease hot spot because severe epidemics have occurred among wheat, triticale, rye, barley and oat crops. Although the first outbreak of appeared in 1998, little information available. Therefore, this study aimed to examine host range, mating type composition population structure Magnaporthe sp. from a single field São Paulo, Brazil. To pathogenicity, 25 isolates were inoculated on five, three, two cultivars barley, rice, respectively, one cultivar each corn,...

10.1111/jph.12575 article EN Journal of Phytopathology 2017-04-29

Background Rubber tree (Hevea spp.) is the main natural rubber producing crop, and it cultivated in numerous equatorial, tropical subtropical areas. Hevea spp. an outcrossing perennial species belongs to botanical family Euphorbiaceae. Breeding of tree, like for many other crops, a long term process. Large scale cultivation new cultivar can only be reached after 20–25 years field experiments on large Breeders are thus interested developing alternative strategies improve speed up breeding...

10.1186/1753-6561-5-s7-p39 article EN cc-by BMC Proceedings 2011-09-13

The commercial release of genetically modified organisms requires the prior environmental and human/animal health risk assessment. In Brazil, National Biosafety Authority (CTNBio) demands to survey area natural occurrence wild relatives GMO in Brazilian ecosystems evaluate possibility introgressive hybridization between sexually compatible species. Modern sugarcane cultivars, focus this study, derive from a series backcrossing events among Saccharum so-called "Saccharum broad sense" includes...

10.3389/fbioe.2020.00598 article EN cc-by Frontiers in Bioengineering and Biotechnology 2020-06-19

The detection of spatial variability in field trials has great potential for accelerating plant breeding progress due to the possibility better controlling non-genetic variation. Therefore, we aimed evaluate a digital soil mapping approach and high-density sampling procedure identifying adjusting dependence early sugarcane stage. Two experiments were conducted regions with different classifications. High-density physical chemical properties was performed regular grid investigate structure...

10.3389/fpls.2021.749533 article EN cc-by Frontiers in Plant Science 2021-11-18

ABSTRACT Lettuce seedlings used on hydroponic cultivation (NFT) are usually produced in trays with small volume, requiring two transplants: from tray to nursery and then the definitive place. The aim of this study was verify lettuce performance under NFT system, using several cell volumes (50, 40, 35, 31, 30, 29, 27, 20 10 cm³ cell-1). considered treatments. experimental design completely randomized blocks, four replicates. Seedlings were transplanted directly profile, except those ones...

10.1590/s0102-053620180320 article EN Horticultura Brasileira 2018-09-01
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