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The application of silicon (Si) fertilizers reduces the severity of blast, caused by Magnaporthe grisea, in irrigated and upland rice; however, little research has been conducted to examine the epidemiological and etiological components of this reduction. Four cultivars of rice with differential ...


Seebold, KWKucharek, TADatnoff, LECorrea Victoria, Fernando J.Marchetti, MA[The influence of silicon on components of resistance to blast in susceptible, partially resistant, and resistant cultivars of rice]The influence of silicon on components of resistance to blast in susceptible, partially resistant, and resistant cultivars of rice
Gaviria, M.E.Martínez Racines, César PompilioGonzález, R.[Reducción de la capacidad vectora de Sogatodes oryzicola (Hom.: Delphacidae) al virus de la hoja blanca del arroz (Oryza sativa)]Reducción de la capacidad vectora de Sogatodes oryzicola (Hom.: Delphacidae) al virus de la hoja blanca del arroz (Oryza sativa)
Cuevas Pérez, Federico E.Hosein, A[Effect of simulated rain on head rice yields of varieties under delayed harvest]Effect of simulated rain on head rice yields of varieties under delayed harvest

Two sets of experiments were conducted to compare the relative stability of partial and complete resistance in rice to Pyricularia grisea (causal agent of the rice blast disease) in a disease hot spot in eastern Colombia. In the first set of experiments, 186 breeding lines selected at the site ...


Correa Victoria, Fernando J.Zeigler, Robert S.[Stability of partial and complete resistance in rice to Pyricularia grisea under rainfed upland conditions in Eastern Colombia]Stability of partial and complete resistance in rice to Pyricularia grisea under rainfed upland conditions in Eastern Colombia
Pantoja López, AGarcía, C.Mejía, OL[Flight activity of Spodoptera fugiperda (J.E. Smith) in acid savanna ricefields in northeastern Colombia]Flight activity of Spodoptera fugiperda (J.E. Smith) in acid savanna ricefields in northeastern Colombia

Biotrophic invasive hyphae (IH) of the blast fungus Magnaporthe oryzae secrete effectors to alter host defenses and cellular processes as they successively invade living rice (Oryza sativa) cells. However, few blast effectors have been identified. Indeed, understanding fungal and rice genes contr...


Mosquera Cifuentes, Gloria MariaGiraldo, M.C.Khang, CHCoughlan, SValent, B[Interaction transcriptome analysis identifies Magnaporthe oryzae BAS1-4 as biotrophy-associated secreted proteins in rice blast disease]Interaction transcriptome analysis identifies Magnaporthe oryzae BAS1-4 as biotrophy-associated secreted proteins in rice blast disease

This paper summarizes results from a decade of collaborative research using advanced backcross (AB) populations to a) identify quantitative trait loci (QTL) associated with improved performance in rice and to b) clone genes underlying key QTLs of interest. We demonstrate that AB-QTL analysis is c...


McCouch, Susan R.Sweeney, MLi, JJiang, H.Thomson, M.Septiningsih, EMEdwards, J.Moncada, PXiao, J.Garris, AJTai, TMartínez Racines, César PompilioTohme, Joseph M.Sugiono, MMcClung, AYuan, L[Through the genetic bottleneck : O. rufipogon as a source of trait-enhancing alleles for O. sativa]Through the genetic bottleneck : O. rufipogon as a source of trait-enhancing alleles for O. sativa

Con el fin de dinamizar la ganadería colombiana, y en un esfuerzo conjunto de los sectores oficial y privado, se están adelantando procesos de investigación y transferencia de tecnología en el nivel de empresas agropecuarias. Parte de ese proceso ha sido la caracterización de los principales sist...


Duarte Torres, O.A.Pulido Herrera, JSilva Zalzuk, JHolmann, Federico J.[Modelo de optimización para los sistemas de producción agropecuarios de la microrregión Valle del Cesar, Colombia = Model to improve the livestock and crop production systems in Valle del Cesar, Colombia]Modelo de optimización para los sistemas de producción agropecuarios de la microrregión Valle del Cesar, Colombia = Model to improve the livestock and crop production systems in Valle del Cesar, Colombia

El añublo del arroz causado por Pyricularia grisea (Magnaporthe grisea) es el principal limitante de la producción en Colombia. La perdida de la resistencia ocurre en penodos de uno a tres años, con la excepción de los cultivares Oryzica Llanos 5 liberado en 1989 y Fedearroz 50 liberado en 1998. ...


Correa Victoria, Fernando J.Tharreau, DMartínez Racines, César PompilioVales, MEscobar, F.Prado Patiño, G.A.Aricapa, María Girlena[Combinaciones de genes en arroz para el desarrollo de resistencia durable a Pyricularia grisea en Colombia]Combinaciones de genes en arroz para el desarrollo de resistencia durable a Pyricularia grisea en Colombia

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