Browsing by Author "Torres, R."
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- ItemAir-sea CO(2) fluxes along the coast of Chile: From CO(2) outgassing in central northern upwelling waters to CO(2) uptake in southern Patagonian fjords(2011) Torres, R.; Mayol Fajardo, Eva Miguelina.
- ItemEffect of boscalid on postharvest decay of strawberry caused by Botrytis cinerea and Rhizopus stolonifer(2007) Sallato, B.V.; Torres, R.; Zoffoli, Juan Pablo; Latorre G., Bernardo
- ItemEffectiveness of three phenylamide fungicides against Phytophthora cryptogea isolated from Kiwi and their mobility in soil(1993) Zaviezo Palacios, Tania; Latorre, B.A.; Torres, R.
- ItemIdentification of Phytophthora cryptogea as the Cause of Rapid Decline of Petunia (Petunia x hybrida) in Chile(AMER PHYTOPATHOLOGICAL SOC, 2008) Ampuero, J.; Latorre, B. A.; Torres, R.; Chavez, E. R.Phytophthora cryptogea was consistently isolated from diseased tissue taken from the crown and necrotic roots of grandiflora type petunia (Petunia x hybrida) that were collected in gardens in five Public parks in Santiago. Chile in 2004 and 2005. Symptoms included leaf wilting and foliar chlorosis. followed by partial necrosis. and extensive dark-brown to reddish cankers in the crown. Disease incidence was over 50% and infected plants died within 7 to 10 days after transplanting. This pathogen was identified oil the basis of colony morphology. morphological characterization of the sexual and asexual reproductive structures, and temperature range. The identification of Phytophthora cryptogea was further corroborated by the internal transcribed spacer sequence analysis (GenBank accession number EF093534). Isolates of P cryptogea were pathogenic oil 10-week-old white grandiflora petunia plants that were inoculated on the roots or on the crown using mycelium fragments, or via soil inoculation using zoospores. A rapid decline was observed after soil inoculation,, with zoospores. Root fresh weight decreased significantly and the root rot index and severity of foliage symptoms increased significantly (P <= 0.051), relative to noninoculated plains after 14 days Of incubation. Two isolates (Ph-1 and Ph-2) were pathogenic oil bell pepper and one isolate (Ph-1) was pathogenic oil tomato after root inoculation. Two isolates (Ph-2 and Ph-3) were pathogenic oil the fruit of avocado, bell pepper. cherry tomato. Cucumber. kiwifruit, lemon. pear. pepino, and potato tubers, demonstrating the pathogen's ability to cause postharvest infection of fruit of a wide range of host plants. The efficacy of mefenoxam at 0.1 mg/ml mixed with either chlorothalonil at 1.0 mg/ml or mancozeb at 1.6 mg/ml was demonstrated in this study. whereas chlorothalonil and mancozeb alone did not control disease development. No significant differences were obtained between foliage and soil drench applications,. This study demonstrated that P. cryptogea is the cause of the rapid decline found on petunia in Santiago. Chile and, to our knowledge. this is the first report giving a detailed description of a disease caused by P. cryptogea on petunia.
- ItemIncrease in Cladosporium spp. populations and rot of wine grapes associated with leaf removal(ELSEVIER SCI LTD, 2011) Latorre, B. A.; Briceno, E. X.; Torres, R.Leaf removal reduces the epiphytic populations of several filamentous fungi found on grapevine (Vitis vinifera) Consequently this practice is used to prevent foliar diseases of grapevines and rots of grapes In this study the effects of leaf removal on Cladosporium rot (Cladosporium cladosporioides and Cladosporium herbarum) which often affects Cabernet Sauvignon in Chile were characterized The effects of leaf removal on epiphytic populations of Cladosporium spp on grape berry surfaces and on Cladosporium rot development were investigated Three leaf removal treatments were compared (i) severe leaf removal where leaves from two to three nodes above opposite and from all nodes below clusters were removed (ii) mild leaf removal where leaves opposite each cluster were removed and (iii) no leaf removal Regardless of the leaf removal treatment low population levels of Cladosporium spp were detected early in the ontogenic development of grape berries which increased as the berries matured reaching maximum populations on overripe berries Based on our results severe leaf removal favors the growth of Cladosporium spp on grape berries and increases the prevalence of Cladosporium rot at harvest This increase in Cladosporium spp was correlated with an increase in lenticel damage in Cabernet Sauvignon and Sauvignon blanc vines subjected to severe leaf removal Considering that Cladosporium rot significantly reduces yield and wine quality, farmers should avoid continuous exposure of grape clusters to sunlight in order to prevent severe outbreaks of Cladosporium rot (C) 2010 Elsevier Ltd All rights reserved
- ItemNUTRITION OF WOMEN IN CHILE(2017) Olagnero, G.; Mardones, F.; Passi Solar, Alvaro Rodrigo; Rosso R., Pedro Pablo; Torres, R.; Rozowski Narkunska, Samuel Jaime; Wood, J. C.; Fernandez, X.
- ItemThe risk assessment index in grape powdery mildew control decisions and the effect of temperature and humidity on conidial germination of "Erysiphe mecator"(2007) Bendek Jara, Carlos Andrés; Campbell, Paul; Torres, R.; Donoso, A.; Latorre G., Bernardo
- ItemWeighted neurofeedback facilitates greater self-regulation of functional connectivity between the primary motor area and cerebellum(2021) Vargas, P.; Sitaram, R.; Sepúlveda, P.; Montalba, C.; Rana, M.; Torres, R.; Tejos Nunez, Cristian Andres; Ruiz, S.