6 documents found, page 1 of 1
Detection of QTL associated with rust resistance using IBD-based methdologies i...
Rosado, Tatiana Barbosa; Tomaz, Rafael Simões; Ribeiro Junior, Marcio Fernandes; Guimarães, Lúcio Mauro da Silva; Araújo, Elza Fernandes deNo Brasil, a ferrugem causada por Puccinia psidii Winter destaca-se como a mais importante doença do eucalipto. O uso de genótipos resistentes é o principal método de controle, o que torna a detecção de marcadores ligados a resistência à ferrugem essencial para a seleção de genótipos resistentes. Neste estudo, uma progênie F1 composta por 131 plantas derivadas de um cruzamento interespecífico de Eucalyptus.Um m...
Xanthomonas axonopodis pv. eucalyptorum pv. nov. causing bacterial leaf blight ...
Ferraz, Hélvio Gledson Maciel; Badel, Jorge Luis; Guimarães, Lúcio Mauro da Silva; Reis, Bruna Paolinelli; Tótola, Marcos RogérioBacterial leaf blight is a major disease of eucalypt, especially under nursery conditions. Different bacterial species have been associated with the disease in several countries, and despite its importance worldwide, it is not clear to date whether similar disease symptoms are caused by the same or by different etiological agents. In this study, 43 bacterial strains were isolated from blighted eucalypt leaves c...
Rhizobacterial characterization for quality control of eucalyptus biogrowth pro...
Zarpelon, Talyta Galafassi; Guimarães, Lúcio Mauro da Silva; Alfenas- Zerbini, Poliane; Lopes, Eli Sidney; Mafia, Reginaldo GonçalvesPlant growth-promoting rhizobacteria strains from special formulations have been used to optimize eucalyptus cutting production. To undertake quality control for the formulated products, the rhizobacterial strains should be characterized to assess their purity and authentication. In the present study, we characterized nine strains of rhizobacteria, including three Bacillus subtilis (S1, S2 and 3918), two Pseudo...
Genetic control of resistance on Mangifera indica to Ceratocystis wilt
Arriel, Daniele Aparecida Alvarenga; Guimarães, Lúcio Mauro da Silva; Resende, Marcos Deon Vilela de; Silva, Daniella Flávia Said Heid SchettiniCeratocystis wilt, caused by Ceratocystis fimbriata is one of the most serious limiting factors for mango production in Brazil. Despite efforts in the selection and the identification of mango cultivars resistant to Ceratocystis wilt, the genetic basis of the resistance remains unknown. Therefore, the objective of this study was to understand the inheritance of resistance to C. fimbriata by artificial inoculati...
Genetic mapping and validation of QTLs associated with resistance to Calonectri...
Zarpelon, Talyta Gafassi; Guimarães, Lúcio Mauro da Silva; Faria, Danielle Assis; Coutinho, Marcelo Magalhães; Cápua Neto, BrazCalonectria leaf blight (CLB) caused by Calonectria pteridis is one of the main leaf diseases in Brazilian Eucalyptus plantations in warm climates with prolonged periods of rain. The main symptoms are leaf spots followed by intense defoliation in highly susceptible plants. Exploiting the existing inter- and intraspecific variability for defoliation is the best option to control this disease. Nevertheless, nothi...
Genetic control of Eucalyptus urophylla and E. grandis resistance to canker cau...
Guimarães, Lúcio Mauro da Silva; Resende, Marcos Deon Vilela de; Lau, Douglas; Rosse, Leonardo Novaes; Alves, Alexandre Alonso; Alfenas, Acelino CoutoChrysophorte cubensis induced canker occurs in nearly all tropical and subtropical regions where eucalypts are planted, causing losses in both wood quality and volume productivity, especially so in the warmer and more humid regions of Brazil. The wide inter and intra-specific genetic variability of resistance to canker among Eucalyptus species facilitates the selection of resistant plants. In this study, we eva...