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Ninety-five strains of fluorescent (presumed to be Pseudomonas spp.) and nonfluorescent pathogens of rice causing grain and sheath rot, dirty panicle, and manchado de grano, and 21 strains of nonpathogenic fluorescent pseudomonads isolated from rice grain and sheaths from 22 countries were compar...


Zeigler, Robert S.Álvarez, E.[Characteristics of Pseudomonas spp. causing grain discoloration and sheath rot of rice, and associated pseudomonas epiphytes]Characteristics of Pseudomonas spp. causing grain discoloration and sheath rot of rice, and associated pseudomonas epiphytes

Cassava is one of the main carbohydrate sources in the tropics, and it has worldwide importance as basic food for millions of persons in America and Africa. This root crop is affected by cassava frog skin disease that in Colombia produces yield losses of almost 90%. A phytoplasma was associated w...


Álvarez, E.Mejía, Juan FernandoLlano Rodríguez, Germán AlbertoLoke, John Bernard[Detection and characterization of a phytoplasma associated with frog skin disease in cassava]Detection and characterization of a phytoplasma associated with frog skin disease in cassava

The application of biotechnology tools has made it possible to make significant advances in the detection of pathogens and in the study of the genetic variability of pathogen populations. As a result, adequate disease management strategies can be planned, and disease resistance markers for plants...


Álvarez, E.Llano Rodríguez, Germán AlbertoLoke, John BernardMejía De Los Rios, J.F.[Applying biotechnology tools to improve control diseases of some tropical crops]Applying biotechnology tools to improve control diseases of some tropical crops

Many types of symptoms associated with discolored grain have been observed on rice (Oryza sativa) sheaths, leaves, and grain in Mexico, Guatemala, Panama, Surinam, Colombia, Peru, and Brazil. These include brown necrotic lesions ranging from small specks to large brown to maroon sheath blotches. ...


Zeigler, Robert S.Álvarez, E.[Bacterial sheath brown rot of rice caused by Pseudomonas fuscovaginae in Latin America]Bacterial sheath brown rot of rice caused by Pseudomonas fuscovaginae in Latin America
Gloor, M.Phillips, O.L.Lloyd, J.J.Lewis, S.L.Malhi, Y.Baker, T.R.López Gonzalez, G.Peacock, J.Almeida, S.Alves de Oliveira, A.C.Álvarez, E.Amaral, I.Arroyo, L.Aymard, G.Banki, O.Blanc, LilianBonal, D.Brando, P.Chao, K.J.Chaves, J.DÁVila, N.Erwin, T.Silva, J.Fiore, A. diFeldpausch, T.R.Freitas, A.Herrera, R.Higuchi, N.Honorio, E.Jiménez, E.Killeen, T.Laurance, W.Mendoza, C.Monteagudo, A.Andrade, A.Neill, D.Nepstad, D.Vargas, P. NÚÑEzPeÑUela, M. C.Cruz, A. PeÑAPrieto, A.Pitman, N.Quesada, C.SalomÃO, R.Silveira, MarcosSchwarz, M.Stropp, J.RamÍRez, F.RamÍRez, H.Rudas, A.Steege, H. terSilva, J.N.M.Torres, A.Terborgh, J.W.Vásquez, R.Heijden, G. van der[Does the disturbance hypothesis explain the biomass increase in basin-wide Amazon forest plot data?]Does the disturbance hypothesis explain the biomass increase in basin-wide Amazon forest plot data?
Patino, S.Lloyd, J.Paiva, R.Baker, T.R.Quesada, C.A.Mercado, L. M.Schmerler, J.Schwarz, M.Santos, A. J. B.Aguilar, A.Czimczik, C. I.Gallo, J.Horna, V.Hoyos, E.J.Jiménez, E.M.Palomino, W.Peacock, J.Pena-Cruz, A.Sarmiento, C.Sota, A.Turriago, Juan DavidVillanueva, B.Vitzthum, P.Álvarez, E.Arroyo, L.Baraloto, C.Bonal, D.Chaves, J.Costa, A.C.L.Herrera, R.Higuchi, N.Killeen, T.Leal, E.Luizao, F.Meir, P.Monteagudo, A.Neil, D.Nunez-Vargas, P.Penuela, M. C.Pitman, N.Priante, N.Prieto, A.Panfil, S. N.Rudas, A.Salomao, R.Silva, J.N.M.Silveira, M.Almeida, S.S. deTorres Lezama, A.Vásquez Martinez, R.Vieira, I.Malhi, Y.Phillips, O.L.[Branch xylem density variations across the Amazon Basin]Branch xylem density variations across the Amazon Basin

Vegetatively propagated crops, suffer from yield loss and reduced stand density and longevity caused by the buildup of certain pests and pathogens between successive plantings via via infected planting material. We reviewed six seed‐borne phytosanitary problems to evaluate whether a seed degenera...


Jacobsen, K.Omondi, B.A.Almekinders, Conny J.M.Álvarez, E.Blomme, GuyDita, M.Iskra Caruana, M.L.Ocimati, W.Tinzaara, W.Kumar, P.L.Staver, C.[Seed degeneration of banana planting materials: strategies for improved farmer access to healthy seed]Seed degeneration of banana planting materials: strategies for improved farmer access to healthy seed

Iglesias,C.Bellotti, A.Álvarez, E.Kawano,K.[Project IP-3 Improved cassava for the developing world Annual Report 1998]Project IP-3 Improved cassava for the developing world Annual Report 1998
Zeigler, Robert S.Rubiano Mejía, M.E.Álvarez, E.[Heat and chemical therapy to eradicate Pseudomonas fuscovaginae from rice seed]Heat and chemical therapy to eradicate Pseudomonas fuscovaginae from rice seed
Álvarez, E.Hurtado López, PXFregene, Martin A.Llano Rodríguez, Germán Alberto[Detection of SRR markers associated with resistance to cassava (Manihot esculenta Crantz) Bacterial Blight (CBB) in Colombia]Detection of SRR markers associated with resistance to cassava (Manihot esculenta Crantz) Bacterial Blight (CBB) in Colombia

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