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Álvarez, E.Latorre Gonzalez, MAMiles, John W.Sotelo, G.Bonilla, Ximena P.[Diversity of Rhizoctonia spp. causing foliar blight on Brachiaria in Colombia and evaluation of Brachiaria genotypes for foliar blight resistance]Diversity of Rhizoctonia spp. causing foliar blight on Brachiaria in Colombia and evaluation of Brachiaria genotypes for foliar blight resistance

Both nymphal and adult spittlebugs (Hemiptera: Cercopidae) cause serious economic damage to susceptible brachiariagrass [genus Biachiaria (Trin.) Griseb], pastures in tropical America. Both life stages are xylem feeders: nymphs feed primarily on roots and stems, whereas the adults feed mainly on ...


Cardona Mejía, CésarMiles, John W.Zuniga, GSotelo, G.[Independence of Resistance in Brachiaria spp. to Nymphs or to Adult Spittlebugs (Hemiptera: Cercopidae): Implications for Breeding for Resistance]Independence of Resistance in Brachiaria spp. to Nymphs or to Adult Spittlebugs (Hemiptera: Cercopidae): Implications for Breeding for Resistance
Aguirre, L.M.Cardona, C.Miles, John W.Sotelo, G.[Characterization of resistance to adult spittlebugs (Hemiptera:Cercopidae) in Brachiaria spp.]Characterization of resistance to adult spittlebugs (Hemiptera:Cercopidae) in Brachiaria spp.

Nymphs and adults of several spittlebug (Hemiptera: Cercopidae) species are key pests of forage brachiariagrasses (Brachiaria spp.) in tropical America. To support current breeding programs, a series of experiments aimed at characterizing the mechanisms of resistance to adult feeding damage were ...


Aguirre, L.M.Cardona, C.Miles, John W.Sotelo, G.[Characterization of resistance to adult spittlebugs (Hemiptera: Cercopidae) in Brachiaria spp.]Characterization of resistance to adult spittlebugs (Hemiptera: Cercopidae) in Brachiaria spp.

Several species and genera of spittlebugs (Homoptera: Cercopidae) are economic pests of grasses in tropical America. They have the potential to cause serious losses on millions of hectares of improved pastures based on cultivars of several species of Brachiaria. Most of the available commercial c...


Cardona Mejía, CésarMiles, John W.Sotelo, G.[An improved methodology for massive screening of Brachiaria spp. genotypes for resistance to Aeneolamia varia (Homoptera: Cercopidae)]An improved methodology for massive screening of Brachiaria spp. genotypes for resistance to Aeneolamia varia (Homoptera: Cercopidae)

Para desarrollar resistencia de pastos Brachiaria spp. al salivazo de los pastos es muy importante confirmar, en condiciones de campo, los niveles de resistencia detectados en invernadero. Es aquí donde el trabajo con el insecto presenta la mayor dificultad dada su característica distribución agr...


Sotelo, G.Cardona Mejía, César[Metodología de campo para la evaluación de Brachiaria spp. por resistencia al salivazo de los pastos, Aeneolama varia (Homoptera: Cercopidae) = A field methodology to evaluate Brachiaria spp. for resistance to the spittlebug, Aeneolamia varia (F.) (Homoptera: Cercopidae)]Metodología de campo para la evaluación de Brachiaria spp. por resistencia al salivazo de los pastos, Aeneolama varia (Homoptera: Cercopidae) = A field methodology to evaluate Brachiaria spp. for resistance to the spittlebug, Aeneolamia varia (F.) (Homoptera: Cercopidae)

La generación e identificación de híbridos de Brachiaria spp. con altos niveles de resistencia a Aeneolamia varia (F.) y la caracterización de los mecanismos de resistencia a otras especies de salivazo, son aspectos muy importantes en un programa de mejoramiento de forrajes que se basa en el sigu...


Sotelo, G.Cardona Mejía, CésarMiles, John W.[Desarrollo de híbridos de Brachiaria resistentes a cuatro especies de salivazo (Homoptera: Cercopidae) = Development of Brachiaria hybrids resistant to four species of spittlebug (Homoptera: Cercopidae)]Desarrollo de híbridos de Brachiaria resistentes a cuatro especies de salivazo (Homoptera: Cercopidae) = Development of Brachiaria hybrids resistant to four species of spittlebug (Homoptera: Cercopidae)

Up to 50% of Brachiaria production in the tropics is affected by foliar blight caused by Rhizoctonia spp. Monothallic isolates of Rhizoctonia (n = 147) were cultured from different Brachiaria genotypes in Colombia and morphologically characterized and evaluated in pathogenicity trials in the gree...


Álvarez, E.Latorre, M.Bonilla, Ximena P.Miles, John W.Sotelo, G.[Diversity of Rhizoctonia spp. causing Foliar Blight on Brachiaria in Colombia and Evaluation of Brachiaria Genotypes for Foliar Blight Resistance]Diversity of Rhizoctonia spp. causing Foliar Blight on Brachiaria in Colombia and Evaluation of Brachiaria Genotypes for Foliar Blight Resistance

Plants can resist herbivore damage through three broad mechanisms: antixenosis, antibiosis and tolerance. Antixenosis is the degree to which the plant is avoided when the herbivore is able to select other plants. Antibiosis is the degree to which the plant affects the fitness of the herbivore fee...


Parsa, SSotelo, G.Cardona, C.[Characterizing herbivore resistance mechanisms: spittlebugs on brachiaria spp. as an example]Characterizing herbivore resistance mechanisms: spittlebugs on brachiaria spp. as an example

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