A5013838399- Wheat and Barley Genetics and Pathology
- Genetic Mapping and Diversity in Plants and Animals
- Genetics and Plant Breeding
- Plant Disease Resistance and Genetics
- Mycotoxins in Agriculture and Food
- Remote Sensing in Agriculture
- Bioenergy crop production and management
- Crop Yield and Soil Fertility
- Genetic and phenotypic traits in livestock
- Yeasts and Rust Fungi Studies
- Leaf Properties and Growth Measurement
- Studies on Chitinases and Chitosanases
- Plant Pathogens and Fungal Diseases
- Spectroscopy and Chemometric Analyses
- Gene expression and cancer classification
- Plant tissue culture and regeneration
- Plant Genetic and Mutation Studies
Centro Internacional de Mejoramiento de Maíz Y Trigo
2016-2024
The University of Sydney
2013
Tar spot complex (TSC) is one of the most destructive foliar diseases maize ( L.) in tropical and subtropical areas Central South America, causing significant grain yield losses when weather conditions are conducive. To dissect genetic architecture TSC resistance maize, association mapping, conjunction with linkage was conducted on an association-mapping panel three biparental doubled-haploid (DH) populations using genotyping-by-sequencing (GBS) single-nucleotide polymorphisms (SNPs)....
Leaf rust (caused by Erikss. []) is increasingly impacting durum wheat ( L. var. ) production with the recent appearance of races virulence to widely grown cultivars in many producing areas worldwide. A highly virulent race on was recently detected Kansas. This may spread northern Great Plains, where most US produced. The objective this study identify sources resistance several from United States and Mexico at seedling stage greenhouse adult field experiments. Genome-wide association (GWAS)...
Fusarium ear rot (FER) is a destructive maize fungal disease worldwide. In this study, three tropical populations consisting of 874 inbred lines were used to perform genome-wide association study (GWAS) and genomic prediction (GP) analyses FER resistance. Broad phenotypic variation high heritability for observed, although it was highly influenced by large genotype-by-environment interactions. the lines, GWAS with general linear model (GLM) identified 3034 single-nucleotide polymorphisms...
Tar spot complex (TSC), caused by at least two fungal pathogens, Phyllachora maydis and Monographella maydis, is one of the major foliar diseases maize in Central South America. P. was also detected United States America 2015 since then pathogen has spread growing regions country. Although remote sensing (RS) techniques are increasingly being used for plant phenotyping, they have not been applied to phenotyping TSC resistance maize. In this study, several multispectral vegetation indices...
The emergence and spread of new crop diseases threatens the global food security situation. Phyllachora maydis, one three fungal pathogens involved in Tar Spot Complex (TSC) maize, a disease native to Latin American countries, was detected for first time United States America (USA) 2015. Although TSC has been previously reported cause up 50% yield losses maize America, impact P. maydis alone on is not known yet. However, there possibility that Monographella second most important pathogen...
Breeding for disease resistance is a central component of strategies implemented to mitigate biotic stress impacts on crop yield. Conventionally, genotypes plant population are evaluated through labor-intensive process assigning visual scores (VS) susceptibility (or resistance) by specifically trained staff, which limits manageable volumes and repeatability evaluation trials. Remote sensing (RS) tools have the potential streamline phenotyping processes deliver more standardized results at...
Genetic resistance in the host plant is most economical and environmentally friendly strategy for controlling wheat leaf rust, caused by Puccinia triticina Eriks. The durum lines Gaza (Middle East), Arnacoris (France) Saragolla (Italy) express high levels of to Mexican races P. triticina. Three recombinant inbred line (RIL) populations, derived from crosses each these sources susceptible ATRED #2, were evaluated rust reactions at CIMMYT's nurseries Mexico. analyses suggested oligogenic...
Leaf rust, caused by Puccinia triticina, is one of the main fungal diseases limiting durum wheat production. This study aimed to characterize previously undescribed genes for leaf rust resistance in wheat. Six different resistant genotypes were crossed two susceptible International Maize and Wheat Improvement Center (CIMMYT) lines resulting F 1 , 2 3 progenies evaluated reactions field under greenhouse conditions. In addition, allelism tests conducted. The results indicated that most carried...
Stripe rust, caused by P uccinia striiformis f. sp. tritici , is one of the major fungal pathogens wheat. A new pathotype was introduced to ustralia in 2002 and several derivative pathotypes were detected subsequent seasons. It has been suggested that severity stripe rust outbreaks since could be as a result traits other than virulence pathogen population. This study conducted investigate hypothesis population dominant better adapted warm temperature conditions compared previous populations....
Stripe rust, caused by the fungal pathogen Puccinia striiformis Westend. f. sp. tritici Eriks, is an important disease of bread wheat (Triticum aestivum L.) worldwide and there indication that it may also become a serious durum (T. turgidum L. var. durum). Therefore, we investigated genetic architecture underlying resistance to stripe rust in adapted germplasm. Wheat infection assays were conducted under controlled conditions Canada field Mexico. Disease assessments performed on population...
Widening the genetic basis of leaf rust resistance is a primary objective global durum wheat breeding effort at International Wheat and Maize Improvement Center (CIMMYT). Breeding programs in North America are following suit, especially after emergence new races Puccinia triticina such as BBG/BP BBBQD Mexico United States, respectively. This study was conducted to characterize map previously undescribed genes for develop reliable molecular markers marker-assisted breeding. Four recombinant...
The dichlorvos–ammonia (DV–AM) method is a sensitive for distinguishing aflatoxigenic fungi by detecting red (positive) colonies. In this study, the DV–AM was applied isolation of and atoxigenic from soil samples maize field in Mexico. first screening, we obtained two isolates subsamples 20 independent and, second one subsample these. Morphological phylogenic analyses (MEX-A19-13, MEX-A19-2nd-5) indicated that they were Aspergillus flavus located A. clade. Chemical demonstrated isolate could...
Abstract Tar spot complex (TSC) is a major fungal disease of maize in Mexico and several Central South American countries. The causal agents the are Phyllachora maydis Monographella . Yield losses up to 58% associated with this have been reported previously. majority commercial germplasm United States considered highly susceptible TSC. In order accelerate resistance improvement process, genes for TSC molecular markers linked these genes, need be identified characterized. Here, we used an...
Three F2-derived biparental doubled haploid (DH) maize populations were generated for genetic mapping of resistance to common rust. Each the three has same susceptible parent, but a different donor parent. Population 1 and 3 consist 320 lines each, population 2 consists 260 lines. The DH evaluated their susceptibility rust in two years with replications each year. For phenotyping, visual score (VS) was assigned (VS). Additionally, unmanned aerial vehicle (UAV) derived multispectral thermal...
Turcicum leaf blight (TLB) is a common foliar disease of maize in Mexico that caused by the fungal pathogen Exserohilum turcicum. The most effective management strategy against TLB monogenic race-specific resistance. Among 140 E. turcicum isolates from symptomatic leaves collected fields Mexico, 100 were obtained tropical (Veracruz) and temperate areas (Estado de México) between 2010 2019, 40 (Sinaloa, Tamaulipas, Veracruz, Chiapas), subtropical (Nayarit, Jalisco, Guanajuato), Hidalgo,...
Abstract Turcicum leaf blight (TLB) of maize is caused by Exserohilum turcicum . The TLB resistance mainly associated with qualitative race‐specific that linked to several Ht genes namely Ht1 , Ht2 Ht3 HtM HtN HtNB and HtP However, quantitative also occurs, but its mechanisms are poorly understood. In this study, tolerance or insensitivity chlorosis necrosis E culture filtrate was resistance. A novel detached seedling assay developed for using methanol‐treated modified Fries medium....
Abstract Background: Common rust is one of the major foliar diseases maize, leading to significant grain yield losses and poor quality. The most sustainable strategy for controlling common develop resistant maize varieties, which requires a further understanding genetic dissection resistance. Results: In this study, an association panel two bi-parental doubled haploid (DH) populations were used perform genome-wide study (GWAS), linkage mapping, genomic prediction analyses. All phenotyped in...