A new disease on greenhouse pepper (Capsicum annuum L.) plants in Culiacan, Mexico with symptoms of chlorosis, wilting and vascular necrosis was observed 2014. Sixty diseased were collected from three different areas the Culiacan Valley to determine causal agent analyse potential risk presented by this region. Fusarium oxysporum recovered consistently (88% samples collected) identified based cultural, morphological pathogenicity tests, as well PCR amplification DNA sequencing TEF-1α gene....

Phytophthora capsici Leonian is a major pathogen of pepper worldwide and few resistance sources to this have been identified so far. The goals study were identify new against P. in Capsicum landraces analyze the relationship between indicator plant symptoms some phenotype parameters height, stem width, leaf length width. Thirtytwo collected from fourteen states Mexico. From each population, 36 plants inoculated with 10,000 zoospores under controlled conditions. This experiment was repeated...

Background: Pepper huastecto yellow vein virus (PHYVV) is one of the main viruses affecting pepper (Capsicum spp.) plants in Mexico.Question: Why there are no resistant cultivars to PHYVV currently? Could it be due for lack new sources and knowledge about heritability trait?Study species: Capsicum annuum, huasteco Bemisia tabaci.Study site: Culiacan Sinaloa, Mexico; January 2013 August 2014.Methods: Two assays were performed 2014 with three wild lines annuum S2 S3 generation under greenhouse...

Meloidogyne enterolobii has become an economically important plant parasitic nematode worldwide because of its high aggressiveness, increasing geographic distribution, wide host range, and pathogenicity in pepper (Capsicum annuum) cultivars carrying resistance genes to incognita, arenaria, javanica. The objectives this study were identify landraces peppers resistant M. analyze the relationship between indicators phenotype parameters height, stem width, leaf length, relative chlorophyll,...

The wild pepper (Capsicum annuum L. var. glabriusculum (Dunal) Heiser & Pickersgill) is a valuable genetic resource for agriculture and food. Around the world salinity significant environmental stress that limit affect productivity. This work estimates variation in tolerance six populations of Northwest Mexico at three levels (without NaCl, 25 50 mM NaCl). measured traits were height, stem development, foliar area, relative content chlorophyll, dry weight plant, root, stem, leaves. Salinity...

Fusarium basal rot is a major disease of onion production in Mexico. Recently, falciforme and F. brachygibbosum were reported as two new causal agents However, little known about the pathogenicity virulence these pathogens on this crop globally. The (severity disease) isolates recovered Culiacan Valley (Sinaloa, North-west Mexico) was determined compared with oxysporum collected from same region. Two tests conducted under controlled conditions, one bulbs, another seedlings cv. 'Carta...

Pepper huasteco yellow vein virus (PHYVV) is a major disease in pepper ( Capsicum annuum ) that causes quantitative and qualitative losses to the crop Central America part of North America. To date, no resistant cultivars are available, breeding hampered by lack knowledge inheritance this trait. Sources resistance PHYVV have been identified wild peppers Mexico. The objectives study were determine grade dominance, analyze maternal influence, estimate number genes involved trait accession...

En el año 2017 cultivo del chile (Capsicum annuum L.) en México registró una producción de 3 millones 54 mil toneladas. los últimos cinco años se han registrado daños económicos y pérdidas 20 % la a causa Geminivirus. El objetivo presente estudio fue determinar distribución variabilidad genética Begomovirus que infectan al las principales zonas productoras Sinaloa, México. Se colectaron 121 muestras con síntomas municipios Escuinapa, Rosario, Concordia, Mazatlán, Elota, Culiacán, Guasave...

Phytophthora infestans is an important pathogen of potato and tomato worldwide. Knowledge the fitness components (FCs), such as pathogenicity, virulence, latent period, lesion area sporulation isolates with different mating types from same region, for improved understanding evolutionary potential P. its short- long-term management. The FCs a Compound Biological Fitness Index (CBFI) 12 strains collected central Mexico, (A1, A2 self-fertile), were compared under controlled conditions in growth...

Los objetivos de este estudio fueron desarrollar un método escrutinio rápido para la resistencia a Anthonomus eugenii Cano (Coleoptera: Curculionidae) en chiles mediante evaluación mortalidad insectos y el consumo hojas plántulas como caracteres resistencia, analizar su interacción con los parámetros morfológicos las condiciones invernadero. Las se cultivaron partir semillas extraídas frutos recolectados 23 poblaciones (10 variedades locales 13 silvestres) México, así cultivares comerciales....

Chickpea (Cicer aretinium L.) is a legume crop of great importance worldwide. In January 2019, wilting symptoms on chickpea (stunted grow, withered leaves, root rot and wilted plants) were observed in three fields Culiacan Sinaloa Mexico, with an incidence 3 to 5%. To identify the cause, eighty symptomatic plants sampled. Tissue from roots was plated potato dextrose agar (PDA) medium. Typical Fusarium spp. colonies obtained all samples. Ten pure cultures by single-spore culturing (Ff01...

Meloidogyne enterolobii is currently the most damaging nematode of genus due to its aggressiveness and ability overcome existing sources resistance; therefore, search for genotypes with resistance in crops high economic importance such as chili pepper (Capsicum annuum L. var. annuum) one greatest challenges facing agricultural researchers. The aim this study was determine level C. landraces from Mexico different population densities M. enterolobii. Five (UTC24, UTC25, UTC66, UTC67, UTC90)...

Background: Populations of Capsicum annuum var. glabriusculum are found in a wide portion the Mexican territory, and it is ancestor many cultivated forms relevant for diet.
 Questions: What proportions phenotypic genetic variation distributed among its sampled regions, populations within populations. How does climate correlates to population’s variation.
 Species: glabriusculum.
 Study sites years: 24 form three regions were sampled: Northwest, states Sonora Sinaloa; South:...

Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) Mediterranean (Q biotype) is a major pest of tomato (Solanum lycopersicum L.; Solanaceae) globally. To our knowledge, no whitefly resistant cultivar has been released commercially, and breeding programs are hampered by the lack resistance sources to this insect which related closely cultivated tomato. Two non-free-choice experiments on B. with 22 landrace (S. lycopersicum) wild var. ‘cerasiforme') populations from Mexico were performed find...

Las vermicompostas incrementan la disponibilidad y asimilación de nutrimentos sustancias naturales promotoras del crecimiento. Adicionalmente, contribuyen en numerosas respuestas fisiológicas plantas, tales como aumento crecimiento rendimiento. Se realizó una investigación con el objetivo comparar efecto auxinas sintéticas vermicomposta rendimiento calabacita (Cucurbita pepo L.), cultivada bajo condiciones invernadero. utilizó un diseño bloques al azar cinco tratamientos: (Amcotone®)...

Se estudió bajo condiciones controladas en invernadero el índice de atracción adultos y preferencia oviposición Bemisia tabaci Mediterranean ocho poblaciones criollas (Solanum lycopersicum) catorce silvestres (S. lycopersicum var. cerasiforme) tomate, así como la relación estos parámetros resistencia tipo antixenosis con densidad tricomas no-glandulares que son características pueden prevenir infestación este insecto. Cinco tres mostraron una alta, silvestre tuvieron intermedia. El resto las...