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Cassava bacterial blight, caused by Xanthomonas axonopodis pv. manihotis (Xam) is a destructive disease occurring in most cassava growing-areas. Although Colombian isolates of Xam differ in DNA polymorphism and pathogenicity, no suitable host differentials have been identified to demonstrate phys...


Restrepo, S.Duque E., Myriam CristinaVerdier, Valérie[Characterization of pathotypes among isolates of Xanthomonas axonopodis pv. manihotis in Colombia]Characterization of pathotypes among isolates of Xanthomonas axonopodis pv. manihotis in Colombia

Protocols were established for screening rice genotypes for tolerance to water-limited conditions under field conditions. These protocols were successfully used to select the best genotypes for further experiments. Rice genotypes responded differently when subjected to water-limited conditions. E...


Sakai, TDuque E., Myriam CristinaVallejo Cabrera, Franco AlirioPompilio Martinez, CIshitani, Manabu[Establishment of drought screening protocols for rice under field conditions = Protocolo para la selección de genotipos de arroz tolerantes a déficit hídrico en campo]Establishment of drought screening protocols for rice under field conditions = Protocolo para la selección de genotipos de arroz tolerantes a déficit hídrico en campo
Assefa, T.Beebe, Stephen E.Rao, Idupulapati M.Cuasquer, Juan B.Duque E., Myriam CristinaRivera, MarielaBattisti, ALucchin, M[Pod harvest index as a selection criterion to improve drought resistance in white pea bean]Pod harvest index as a selection criterion to improve drought resistance in white pea bean

DNA polymorphism and variation in virulence of Xanthomonas axonopodis pv. manihotis (Xam), the causal agent of cassava bacterial blight, were studied within a pathogen population from Venezuela. Collections were made in several fields at different sites within an edaphoclimatic zone where cassava...


Verdier, ValérieRestrepo, S.Mosquera Cifuentes, Gloria MariaDuque E., Myriam CristinaGerstl, ALaberry Saavedra, Rafael Alberto[Genetic and pathogenic variation of Xanthomonas axonopodis pv. manihotis in Venezuela]Genetic and pathogenic variation of Xanthomonas axonopodis pv. manihotis in Venezuela

Action thresholds for Tibraca limbativentris Stall (TL) on rice were calculated to be 8.8 and 25.8 TL per 10 sweep nets for 30- and 40-day old plants, respectively. Population dynamics of TL at two localities in Valle del Cauca, Colombia, indicated a density of 1.2 TL per sweep (12 TL per 10 swee...


Pantoja Lopez, ATriana Espinel, MónicaBastidas López, HaroldGarcía Ardila, C.Duque E., Myriam Cristina[Damage by Tibraca limbativentris (Hemiptera: Pentatomidae) to rice in Southwestern Colombia]Damage by Tibraca limbativentris (Hemiptera: Pentatomidae) to rice in Southwestern Colombia

Germplasm of the calabash tree (Crescentia cujete L.) was collected in five major regions of Colombia, i.e. the Andes, Caribbean, Amazon, Orinoco, and Pacific regions. Collecting this multipurpose tree was guided by the indigenous knowledge of farmers and artisans in each region. Large variation ...


Arango Ulloa, AJBohórquez Cháux, AdrianaDuque E., Myriam CristinaMaass, Brigitte L.[Diversity of the calabash tree (Crescentia cujete L.) in Colombia]Diversity of the calabash tree (Crescentia cujete L.) in Colombia

A diversity survey was used to estimate allelic diversity and heterozygosity of 129 microsatellite markers in a panel of 44 common bean (Phaseolus vulgaris L.) genotypes that have been used as parents of mapping populations. Two types of microsatellites were evaluated, based respectively on gene ...


Blair, Matthew W.Giraldo Zapata, Martha C.Buendía Castellanos, Hector F.Tovar Luque, EDuque E., Myriam CristinaBeebe, Stephen E.[Microsatellite marker diversity in common bean (Phaseolus vulgaris L.)]Microsatellite marker diversity in common bean (Phaseolus vulgaris L.)

Cassava (Manihot esculenta Crantz) is a major root crop widely grown in the tropics. Cassava bacterial blight, caused by Xanthomonas axonopodis pv. manihotis (Xam), is an important disease in Latin America and Africa resulting in significant losses. The preferred control method is the use of resi...


López, C.E.Quesada Ocampo, LMBohórquez Cháux, AdrianaDuque E., Myriam CristinaVargas Daza, JaimeTohme, Joseph M.Verdier, Valérie[Mapping EST-derived SSRs and ESTs involved in resistance to bacterial blight in Manihot esculenta]Mapping EST-derived SSRs and ESTs involved in resistance to bacterial blight in Manihot esculenta

The Andean gene pool of common bean (Phaseolus vulgaris L.) has high levels of morphological diversity in terms of seed color and size, growth habit and agro-ecological adaptation, but previously was characterized by low levels of molecular marker diversity. Three races have been described within...


Blair, Matthew W.Díaz, J.M.Díaz, Lucy MilenaHidalgo, R.Duque E., Myriam Cristina[Microsatellite characterization of Andean races of common bean (Phaseolus vulgaris L.)]Microsatellite characterization of Andean races of common bean (Phaseolus vulgaris L.)

Phaseolus beans are distributed worldwide and are cultivated in the tropics, subtropics, and temperate zones. The common bean is the most important grain legume for direct human consumption in the world. The objectives of this study were to isolate microsatellite repeats and to establish their di...


Gaitán Solís, ElianaDuque E., Myriam CristinaEdwards, K.J.Tohme, Joseph M.[Microsatellite repeats in common bean (Phaseolus vulgaris L.) : Isolation, characterization, and cross-species amplification in Phaseolus ssp]Microsatellite repeats in common bean (Phaseolus vulgaris L.) : Isolation, characterization, and cross-species amplification in Phaseolus ssp

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