diseases and pests: Resistance Breeding

Right click and "Save As" to download these files to your hard drive.
(If you have problems opening any of the files, please contact Clementine Leahy

• Sources of resistance to Phytophthora pod rot at the International Cocoa Genebank, Trinidad. Genetic Resources and Crop Evolution, Vol. 53, p. 99-109.2006. Resistance to black pod. by Iwaro; A.D.; Butler, D.R. and Eskes, A. B. [PDF: 279KB]
• Over-expression of a cacao class I chitinase gene in Theobroma cacao L. enhances resistance against the pathogen, Colletotrichum gloeosporioides, Planta 2005, by S. N. Maximova, et al. [PDF: 373kb]
• Relationships Between Black Pod and Witches'-Broom Diseases in Theobroma cacao by J.-M. Thevenin, et al. [PDF: 109kb]
• Evaluation of cacao (Theobroma cacao) clones against seven Colombian isolates of Moniliophthora roreri from four pathogen genetic groups by W. Phillips-Mora, et. al. [PDF: 115 kb]
• Identification of a major QTL in cocoa (Theobroma cacao L.) associated with resistance to witches' broom disease, 2002. by V. T. Queiroz, et. al. [PDF: 145 kb]
• Resistance Gene Mapping for Witches' Broom Disease in Theobroma cacao L. in an F2 Population Using SSR Markers and Candidates Genes by J. Steven Brown, et al [PDF: 332.29 kb]
• Characterisation and genetic mapping of resistance and defence gene analogs in cocoa (Theobroma cacao L.) by C. Lanaud et al. [PDF: 1.82 MB]
• Identification of QTLs related to cocoa resistance to three species of Phytophthora by A. M. Risterucci et al. [PDF: 277 kb]
• Isolation of ESTs from cacao ( Theobroma cacao L.) leaves treated with inducers of the defense response by J.A. Verica et al. [PDF: 214 kb]
• Assessment of Resistance to Witches'-Broom Disease in Clonal and Segregating Populations of Theobroma cacao by S. Surujdeo-Maharaj, P. Umaharan and D. R. Butler [PDF: 164 kb]
• USDA Program for Theobroma cacao by J. A. Saunders [PDF: 17.4 MB--very large file]
• Variation of the response of clonal cocoa to attack by cocoa pod borer, Conopomorpha cramerella (Lepidoptera: Gracillariidae) in Sabah. Crop Protection, vol. 25, p. 712-717. by C.L. Teh, J. T.Y. Pang, and C.T. Ho. [PDF: 189 KB] posted Nov. 2 2006
• Foliar resistance of cacao (Theobroma cacao) to Phytophthora palmivora as an indicator of pod resistance in the field: interaction of cacao genotype, leaf age and duration of incubation. Plant Pathology, vol. 55, p. 776-782 by G.M. Tahi, B. Kebbe, A. Sangare, F. Mondeil, C. Cilas, and A.B. Eskes. [PDF: 151 KB] posted Jan. 2 2007
• Characterization of a cocoa population for mapping of genes of resistance to withces' broom and phytophthora pod rot. <Original> Caracterização de uma população de cacaueiro para mapeamento de genes de resistência à vassoura-de-bruxa e podridão-parda. Fitopatologia Brasileira, vol. 30, p. 380-386. In Portuguese. by A. Dantas Neto, R. X. Corrêa, W.R. Monteiro, E.D.M.N. Luz, K.P. Gramacho and U.V. Lopes. [PDF: 168 KB] posted Jan. 2 2007
• Comparative assessment of the resistance of cocoa (Theobroma cacao L.) progenies from SNK10 x SNK413; ICS84 x ICS95 to Phytophthora megacarya in Cameroon by measuring size of necrotic lesion along the midrib. Plant Pathology Journal, 2006, vol. 5, p. 329-335. by P.F. Djocgoue, T. Boudjeko, D.J. Nankeu, M.I.B. Efombagn, S. Nyasse, and D.N. Omokolo. [PDF: 434 KB] posted Feb 27 2007
• Sources of resistance to Crinipellis perniciosa in progenies of caco accessions collected in the Brazilian Amazon. Scientia Agricola, vol. 63, p. 572-578, 2006. by V.R.L. de M. Paim, E.D.M.N. Luz, J.L. Pires, S.D.V. M. Silva, J.T. de Souza, P.S.B. Albuquerque, and L.P. dos Santos Filho. [PDF: 42 KB] posted Mar. 30 2007
• Genes differentially expressed in Theobroma Cacao associated with resistance to witches' broom disease caused by Crinipellis perniciosa. Molecular Plant Pathology, vol. 8, p. 279-292, 2007. by G.A. Leal, Jr., P.S.B. Albequerque, and A. Figueira. [PDF: 232 KB] posted May 1 2007
• A qualitative host-pathogen interaction in the Theobroma cacao-Moniliophthora perniciosa pathosystem. Plant Pathology, vol. 56, p. 277-285, 2007. by M.W. Shaw and A.E. Vandenbon. [PDF: 160 KB] posted May 30 2007
• Foliar resistance of cacao (Theobroma cacao) to Phytophthora palmivora as an indicator of pod resistance in the field: the effect of light intensity and time of day of leaf collection. Plant Pathology, vol. 56, p. 219-226, 2007. by G.M. Tahi, B.I. Kebe, A. Sangare, C. Cilas, and A.B. Eskes. [PDF: 110 KB] posted May 30 2007
• Participatory cocoa (Theobroma cacao) selection in Cameroon: Phytophthora pod rot resistant accessions identified in farmers' fields. Crop Protection, vol. 26, p. 1467-1473, 2007. by M.I.B. Efombagn, S. Nyasse, O. Sounigo, M. Kolesnikova-Allen, and A.B. Eskes. [PDF: 165 KB] posted November 30 2007
• Development of a Marker Assisted Selection Program for Cacao. Phytopathology, vol. 97, p. 1664-1669 2007 by R.J. Schnell, D.N. Kuhn, J.S. Brown, C.T. Olano, W. Phillips-Mora, F.M. Amores, and J.C. Motamayor. [PDF: 188 KB] posted January 2 2008
• Biodiversity and biogeography of the cacao (Theobroma cacao) pathogen Moniliophthora roreri in Tropical America. Plant Pathology, vol. 56, p. 911-922, 2007 by W. Phillips-Mora, M.C. Aime, and M.J. Wilkinson. [PDF: 257 KB] posted January 2 2008
• Levels of resistance to Phytophthora pod rot in cocoa accessions selected on-farm in Cote d'Ivoire. Crop Protection, vol. 27, p. 302-309, 2008. by N.D. Pokou, J.A.K. N'Goran, I. KD.bD, A. Eskes, M. Tahi, and D. Sangar. [PDF: 309 KB] posted April 25 2008
• Genetic resistance to cacao diseases is key to safeguarding chocolate production. Agricultural Research, vol. 56, no. 8, 2008 by A. Flores [PDF: 127 KB] posted November 21 2008
• Evaluation of resistance in selected cocoa genotypes to the brown cocoa mirid, Sahlbergella singularis Haglund in Nigeria. Crop Protection, vol. 28, p. 350-355, 2009. by J.C. Anikwe, A.A. Omoloye, P.O. Aikpokpodion, F.A. Okelana and A.B. Eskes. [PDF: 351 KB] posted April 8 2009
• Behavior of cacao hybrids (Theobroma cacao L.) to attack by Steirastoma breve (Coleoptera: Cerambycidae). [Comportamiento de hibridos de cacao (Theobroma cacao L.) al ataque de Steirastoma breve (Coleoptera: Cerambycidae)].Revista Colombiana de Entomologia, Vol. 34, p. 151-155, 2008 by F. Morillo, P. Sanchez, C. Giron, A. Valera, W. Munoz and J. Guerra. [PDF: 143 KB] posted April 8 2009
• Resistance of cacao (Theobroma cacao L.) to Sahlbergella singularis (Hemiptera: Miridae): investigation of antixenosis, antibiosis and tolerance. International Journal of Tropical Insect Science, vol. 28, p. 201-210, 2008 by K.F. N'Guessan, J.A. K. N'Goran and A.B. Eskes. [PDF: 228KB] posted April 23 2009
• Characterization of cocoa clones (Theobroma cacao L.) resistant and susceptible to Monilia pod rot (Moniliophthora roreri [Cif & Par] Evans et al.) using RFLP markers. [ Caracterización de clones de cacao (Theobroma cacao L.) resistentes y susceptibles a la moniliasis (Moniliophthora roreri [Cif & Par] Evans et al.) mediante marcadores RFLP]. Tesis Mag. Sc. Turrialba, Costa Rica, CATIE.  88 p., 1990 by V.J. Febres Rodríguez. [PDF: 5.1MB] posted May 6 2009
• Novel sources of witches' broom resistance [causal agent Moniliophthora perniciosa] from natural populations of Theobroma cacao from the Brazilian Amazon. Euphytica, 172 [1], pp. 125-138, 2010. By P.S.B. de Albuquerque, S.D.V.M. Silva, E.D.M.N. Luz, J.L. Pires, A.M.C. Vieira, C.G.B. Demétrio, S.F. Pascholatti, A. Figueira.  [PDF: 329KB]   posted December 22 2009