A5061729983- Nematode management and characterization studies
- Cassava research and cyanide
- Plant Disease Management Techniques
- Legume Nitrogen Fixing Symbiosis
- Coffee research and impacts
- Banana Cultivation and Research
- Agronomic Practices and Intercropping Systems
- Growth and nutrition in plants
- Cocoa and Sweet Potato Agronomy
- Plant Virus Research Studies
- Insect Pest Control Strategies
- Pineapple and bromelain studies
- Plant-Microbe Interactions and Immunity
- Silicon Effects in Agriculture
- Seed Germination and Physiology
- Genetics and Plant Breeding
- Plant Parasitism and Resistance
- Plant pathogens and resistance mechanisms
- Phytoplasmas and Hemiptera pathogens
- Genetic diversity and population structure
- Agricultural and Food Sciences
- Plant Pathogens and Fungal Diseases
- Rural Development and Agriculture
- Phytochemistry and biological activities of Ficus species
Empresa de Pesquisa Agropecuária de Minas Gerais
2016-2025
Universidade Federal de Lavras
2003-2024
Instituto Nacional de Ciência e Tecnologia de Ciência Animal
2018
Brazilian Agricultural Research Corporation
2015
Universidade de Brasília
2015
Institut de Recherche pour le Développement
2015
Centro Universitário do Sul de Minas
2007-2013
Coffee genetic improvement programs have been evolving very quickly, with frequent launches of new cultivars. The adoption these materials by rural producers requires knowledge agronomic performance in different production systems. Thus, this research aimed to evaluate the irrigated and rainfed Arabica coffee (Coffea arabica L.) cultivars Cerrado Mineiro region. Evaluations were conducted experimental fields across 22 farms producers, 11 used an system a system. Twelve evaluated as follows:...
A explosão oxidativa é uma resposta de defesa da planta após o reconhecimento do patógeno, conduzindo à reação hipersensibilidade (HR). Esta devido geração espécies ativas oxigênio (ROS ou EAO's), tais como H2O2, O2-, e OH- As possuem várias funções na planta. Peróxido higrogênio (H2O2) pode ser diretamente tóxico ao patógeno está envolvido com fortalecimento parede celular, vez que H2O2 necessário para a biossíntese lignina. hidrogênioatua também mensageiro secundário, sendo responsável...
The purpose of this study was to select Coffea arabica progenies for resistance M. paranaensis in an infested coffee growing area using Henderson's mixed model methodology. Forty-one genotypes were selected at the Coffee Active Germplasm Bank Minas Gerais, and evaluated regard stem diameter, number plagiotropic branches, reaction nematode, yield per plant. There genetic variability among studied all traits evaluated, populations indicating possibilities obtaining gains through selection...
Root-knot nematodes (RKN), Meloidogyne spp., have major economic impact on coffee production in Central and South America. Genetic control of RKN constitutes an essential part for integrated pest management strategy. The objective this study was to evaluate the resistance Coffea canephora genotypes (clones) spp. Sensitive drought-tolerant were used infer their using nematode reproduction factor histopathology. Eight clonal highly resistant M. paranaensis. 'Clone 14' (drought-tolerant)...
Fig (Ficus carica L.) is a fruit of great importance worldwide.Its propagation carried out with stem cuttings, procedure that favors the occurrence synonymy among specimens.Thus, molecular markers have become an important tool for studies DNA fingerprinting, germplasm characterization, and genetic diversity evaluation in this plant species.The aim study was analysis accessions fig detection synonyms samples using markers.Five microsatellite previously reported as polymorphic to were used...
A possibilidade de manejo Meloidogyne exigua Goeldi, 1887, pela ativação mecanismos defesa no cafeeiro representa uma alternativa potencialmente útil desse patógeno. Com este trabalho, objetivou-se avaliar a eclosão e mortalidade juvenis do segundo estádio (J2) M. na presença produtos indutores resistência o efeito acibenzolar-S-metil (ASM, Bion®) indução (Coffea arabica L.) 'Catuaí- 144' contra exigua. J2 foram avaliadas ASM ácido salicílico (AS) nas dosagens 0,2; 0,35 0,5 g. i. a./L;...
Meloidogyne paranaensis is one of the most destructive root‐knot nematode ( RKN ) species parasitizing coffee in Brazil and Americas generally. The objectives this study were to assess genetic variability, aggressiveness virulence seven different M. populations on susceptible resistant Coffea spp. All identified by biochemical molecular methods. Coffee seedlings inoculated greenhouse, reproduction factor was used infer their genotypes. Phylogenetic studies showed a low variability...
Summary Root-knot nematodes, Meloidogyne spp., cause great losses to coffee crops in Brazil and worldwide. However, little is known about the physiological changes that these pathogens induce plants. The present work aimed compare variables of seedlings ( Coffea arabica ‘Catuaí Vermelho IAC 144’) infected with paranaensis or M. exigua healthy Nematode-infected plants showed reductions height starch content roots compared In addition, had a reduction transpiration, stomatal conductance CO 2...
Root-knot nematodes negatively impact on coffee yield worldwide. The use of resistant cultivars is the most effective way to manage these pests. goal this study was identify Coffea arabica genotypes with resistance Meloidogyne paranaensis and M. incognita race 1. Eighteen C. (EPAMIG’s Germplasm Bank), previously selected for poor host suitability in a -infested field, plus susceptible standard, were inoculated two species determine their using nematode reproduction factor (). Accessions...
A eclosão e mortalidade de juvenis segundo estádio (J2) Meloidogyne exigua foram avaliadas em extratos aquosos urucum-colorau (Bixa orellana), cravo-da-índia (Syzygium aromaticum), canela (Cinnamomum zeylanicum), pimenta-do-reino (Piper nigrum), gengibre (Zingiber officinale), salsa (Petroselium crispum), soro leite, solução nutritiva hidropônica, aquosa cloreto sódio (NaCl) açúcar (sacarose), fermento biológico probiótico (Controlmix®). O leite os canela, causaram 100% (P<0,05) após 24 h...
Phoma leaf spot, caused by costarricensis poses a serious threat to coffee (Coffea arabica) production, especially in the highlands of state Minas Gerais, Brazil. Extracts citric biomass, berry husks and leaves severely affected rust Hemileia vastatrix, were evaluated against P. costarricensis. In an vitro assay, aqueous extracts rusted plus commercial based on biomass named Ecolife® Agromil® tested at various dilutions mycelial growth inhibition vivo, seedlings maintained glasshouse,...
The nematode Meloidogyne exigua infests Arabica coffee ( Coffea arabica L.) plants, leading to severe growth reduction in young trees and decreased bean yield. We investigated the responses of plants this estimated genetic gain progenies derived from cross between cultivar Catuaí Timor hybrid. evaluated 85 F 4:5 progenies; cultivars Mundo Novo IAC 379‐19 Vermelho 99 were used as susceptible controls, Paraíso MG H 419‐1 IPR 100 resistant controls. Progeny using gall index (GI), reproduction...
A resistência do cafeeiro (Coffea arabica) Iapar-59 a Meloidogyne exigua foi comparada com cultivar IAC-Apoatã, empregada como padrão de resistência, e as cultivares suscetíveis Mundo Novo (IAC 379-19), Catuaí 62) Tupi 1669-33). Plantas um ano idade foram inoculadas 10.000 ovos M. exigua. Aos 93 dias da inoculação avaliou-se reprodução através número galhas (NG), (NO), fator (FR), reducão no comportamento dos cafeeiros. Menor igualmente (P<0,05) observada nos cafeeiros Apoatã, quais o IG,...
Na busca por novos indutores de resistência contra a vassoura-de-bruxa no cacaueiro avaliou-se o efeito vários nutrientes, acibenzolar-S-metil (ASM) e combinação desses nutrientes com ASM. Os produtos as misturas foram pulverizados 30 dias antes da inoculação nas mudas do clone SIC-23. Foram utilizados os comerciais Supa-potássio®(silicato potássio), Hortifós® PK (fosfito potássio) Broadacre® Mn (sulfato manganês), testados dosagens 2,5 mL; 5,0 10 mL/L água, isoladamente ou combinados ASM...
The cities in the South of Minas Gerais, which is main coffee producer region Brazil, would face a serious risk productivity loss if more aggressive root-knot nematodes species, such as Meloidogyne paranaensis. In order to prevent dissemination this nematode, it necessary know occurrence outbreaks and distribution spp. region. Then, objective was investigate Coffea arabica plantations some coffee-producing Gerais by root sampling, diagnosis mapping outbreaks. total 162 samples calculated...
Summary Meloidogyne paranaensis is one of the most important pathogenic nematode species on coffee. Our aim with this study was to characterise resistance genotype ‘16-6-1’, derived from germplasm ‘Amphillo’ Coffea arabica M. . Second-stage juveniles penetrated roots ‘16-6-1’ in lower numbers and at a slower pace as compared susceptible genotype. The strong blue fluorescence observed resistant, but not suggested that responses occurred early 2 days after inoculation (DAI). Late involved...
Meloidogyne species are destructive phytonematodes that result in reduced yields of coffee.The classic test for resistance to exigua coffee progenies is both expensive and time-consuming.The use molecular marker techniques can assist the selection process when it difficult measure phenotype, such as cases nematode infestation.The objective this study was identify microsatellite markers associated with M. F 5 derived from a cross between Híbrido de Timor 440-10 Catuaí Amarelo IAC 86.Of 44...
In the northern Minas region, dry-warm climate predisposes coffee plants to occurrence of leaf miners, mites, cercosporiosis, and scald. Aiming for development a cultivar adapted these conditions, Coffea canephora Pierre ex A. Froehner clones were selected through genetic parameters under an irrigated system, without agrochemicals. Eighteen agronomic traits evaluated. The survival rate, number nodes per plagiotropic branch, miner infestation cercosporiosis incidence chosen as characteristics...
Summary Meloidogyne paranaensis is one of the most destructive root-knot nematode species affecting coffee cultivation. This presents different esterase phenotypes (Est): P1, P2 and P2a, previous studies showing that Est P2a populations were more aggressive to susceptible cultivars than with local producers have even asked if they may be described as other species. The objective this study was characterise M. (Est P2a), regarding morphological, morphometric phylogenetic relationships in...