A5049785170- Plant Pathogens and Resistance
- Potato Plant Research
- Plant Pathogens and Fungal Diseases
- Plant Disease Resistance and Genetics
- Plant Virus Research Studies
- Plant tissue culture and regeneration
- Yeasts and Rust Fungi Studies
- Plant-Microbe Interactions and Immunity
- Cocoa and Sweet Potato Agronomy
- Plant and soil sciences
- Plant Pathogenic Bacteria Studies
- Plant Disease Management Techniques
- Plant Physiology and Cultivation Studies
- Banana Cultivation and Research
- Phytoplasmas and Hemiptera pathogens
- Plant and Fungal Interactions Research
- Insect-Plant Interactions and Control
- Powdery Mildew Fungal Diseases
- Pineapple and bromelain studies
- Entomopathogenic Microorganisms in Pest Control
- Seed and Plant Biochemistry
- Botany and Plant Ecology Studies
- Agriculture, Plant Science, Crop Management
- Transgenic Plants and Applications
- Genetics and Plant Breeding
Chapingo Autonomous University
2014-2024
Oregon State University
2018
Horticultural Crops Research Laboratory
2018
Instituto Nacional de Investigaciones Forestales Agrícolas y Pecuarias
2006
Instituto de Salud del Estado de México
1999
University of California, Riverside
1984
ABSTRACT The population structure of Phytophthora infestans in the Toluca Valley central Mexico was assessed using 170 isolates collected from cultivated potatoes and native wild Solanum spp., S. demissum xendinense. All were analyzed for mitochondrial DNA (mtDNA) haplotype amplified fragment length polymorphism (AFLP) multi-locus fingerprint genotype. Isolate samples monomorphic mtDNA because all tested Ia haplotype. A total 158 multilocus AFLP genotypes identified among P. included this...
We tested the hypothesis that population of Phytophthora infestans in Toluca valley region is genetically differentiated according to habitat. Isolates were sampled three habitats from (i) wild Solanum spp. (WILD), (ii) land-race varieties low-input production systems (RURAL), and (iii) modern cultivars high-input agriculture (VALLEY). 1988-89 (n= 179) 1997-98 389). In both sampling periods, greatest genetic diversity was observed RURAL VALLEY habitats. Based on Glucose-6-phosphate isomerase...
Potato is an essential crop worldwide, and optimizing micropropagation techniques important for enhancing germplasm conservation large-scale production. This study focuses on the in vitro propagation of two potato varieties, Agata Fianna, emphasizing sterilization protocols, shoot induction, rooting, microtuber Apical buds from healthy, disease-free plants were selected as explants. These surface-sterilized using 70% ethanol sodium hypochlorite (NaOCl) with Tween-20. The explants excised...
The central highlands of Mexico should provide an optimal testing ground for evaluating the potential threat selection resistance to fungicides in population Phytophthora infestans. We evaluated hypotheses that exposure azoxystrobin, cymoxanil, dimethomorph, fluazinam, mancozeb, metalaxyl, and propamocarb hydrochloride would lead (i) a shift sensitivity distributions (i.e., selection) (ii) lower genotypic diversity population. compared populations from unsprayed plots with had been exposed...
Ten institutions in nine countries joined together to test the stability of resistance 14 potato genotypes oomycete pathogen Phytophthora infestans three separate trials. Seven were tested one trial involving seven locations, and all two subsequent trials, each eight locations. Stability was with nonparametric tests an additive main effects multiplicative interaction (AMMI) model. Overall, P. robust; resistant consistently locations The analysis indicated that specific basically stable...
Abstract To catalog and promote the conservation use of crop wild relatives, comprehensive phenotypic genotypic information must be available. Plant genotyping has power to resolve phylogenetic relationships between quantify genetic diversity, identify marker-trait associations for expedited molecular breeding. However, access cost-effective strategies is often limited in underutilized crops relatives. Potato landraces species, distributed throughout Central South America, exhibit remarkable...
The Toluca valley, located in central Mexico, is thought to be the center of origin potato late blight pathogen Phytophthora infestans. We characterized over 500 individuals P. infestans sampled from populations with a geographical distance more than 400 km six regions adjacent valley three states including Michoacán, and Tlaxcala. Our sampling occurred on predominant east west gradient showed significant genetic differentiation. most western location found Michoacán was differentiated other...
Ribavirin inhibited a specific step of tobacco mosaic virus (TMV) replication. Time-courses sensitivity TMV multiplication in asynchronous and synchronous infections demonstrated that ribavirin an early function occurs prior to the period viral RNA protein synthesis. In infection, synthesis both single-stranded genomic double-stranded replicative form when treatment began during first 4 h, but there was no inhibition at 12 h or later, even though most occurred after h. Viral also not later....
La marchitez del chile (Capsicum annuum) es causada por un complejo de hongos fitopatógenos suelo, entre los que se encuentra Phytophthora capsici (Leonian) y ocasiona pérdidas en rendimiento fruto desde el 10 hasta 100 %; no obstante, hay suelos supresores contienen microorganismos como Penicillium sp., antagónicos al oomiceto. Con este antecedente, hicieron recolectas ambos campo, mayormente Bajío guanajuatense, México, con objetivo identificar posible variabilidad a nivel molecular las...
Potato tuber sugar content is an indicator of management conditions during crop growth, since it affects the degree maturity, quality and sprouting. In this study, potato growth yield under field were assessed. Soluble in tubers at different physiological ages was determined, as effect these sugars have on seed-tuber sprouting storage. To end, four samplings carried out cultivars: one dormancy three ages. Determinations made using high-performance liquid chromatography (HPLC). The variety...
The aim of this work was to study the influence plant density (45, 25, 16 and 8 plants·m-2) on hydroponic greenhouse production Gigant variety potato minitubers larger than 10 mm in diameter physiological growth indicators. With high population (45 leaf area index 13.4 at 75 days after emergence height 45 % higher plants grown plants·m-2. At density, total biomass (67.5 g), tuber number (16.5) (52.5 g) were significantly plants·m-2, with 44.5 g, 10.2 36.8 respectively. absolute rate (AGR)...
Several wild species of Ipomoea grow in the central highlands Mexico. During summer 1999, Metepec, Mexico, blighted leaves and petioles purpurea were collected from diseased plants placed a moist chamber to induce sporulation. Sporangia that formed on lesions transferred with piece agar selective rye medium (2). Phytophthora ipomoeae was consistently isolated. Species identification based sporangial gametangial characteristics five cultures grown agar. mainly ellipsoid but occasionally...