Location: R. Elepoussing, Haut Oyapock, French Guiana (primary forest)

Date: April 1995

Coordinates: 52.56 W, 2.18 N

Material collected: Seed

Notes: Few kms upstream of Boko Falls to Camrouze Falls, right bank

Expedition Code: 95GU

   Trinidad - CRU, 1995

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Reference

Trinidad - CRU 1995

Cocoa Research Unit. Report for 1995. The University of the West Indies.

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   Lachenaud, P. et al., 1997

×

Reference

Lachenaud, P., Mooleedhar, V. & Couturier, C. 1997

Les cacaoyers spontanes de Guyane, nouvelles prospections. Plantations, Recherche, Developpment, Janvier-Fevrier, pp. 25-32.

Notes

French Guiana - CIRAD/CRU, Haut Oyapock, Rivers Euleupousing, Yaloupi and Oyapock. Datafile: OYA___DC GUF - CIRAD/CRU Expedition Field Data Germplasm: Descriptions of 41 ELP, 4 OYA and 8 YAL] accessions made at the time of collection from the French Guianan Haut Oyapock region. Descriptors: Characteristics of trees in the field: height, canopy size, branch number, presence of disease. Fruit form: the "Guianan" pod shape is described as midway between the Amelonado and the Angoleta, quite similar to pods from the Rio Ica (in Brazil and Putumayo in Peru), an upper Amazon tributary. No specification in this field represents deformity.

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 Fruit

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 Parents:

ELP 37  x Unknown

 Motamayor, J.C. et al., 2008

'Amelonado' Population

 Reference

×

Reference

Motamayor, J.C., Lachenaud, P., da Silva e Mota, J.W., Loor, R., Kuhn, D.N., Brown, J.S. & Schnell, R.J. 2008

Geographic and Genetic Population Differentiation of the Amazonian Chocolate Tree (Theobroma cacao L). PLoS ONE 3(10): e3311. doi:10.1371/journal.pone.0003311

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 Population  SSR

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 Guiltinan, Mark, 2019

'Guiana' Population

 Reference

×

Reference

Guiltinan, Mark 2019

Theobroma cacao Disease Resistance: Discovery and Functional Characterization of Genes Regulating Plant Immunity in Perennial Crops. NCBI

Notes

A project to establish a new scientific approach for use with perennial crop plants to identify candidate loci for disease resistance using Theobroma cacao. Leaf samples were collected from the La Montaña field site at the CATIE field station in Turrialba, Costa Rica. The study focused on four genetic groups (Guiana, Iquitos, Marañon, and Nanay) and variation in resistance to Phytophthora.

Last updated: November, 2022

 plantscience.psu.edu/…

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 Disease  Population  Accession Data  Project Data

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 Phytophthora

Susceptible

 Guiltinan, Mark, 2019

×

Reference

Guiltinan, Mark 2019

Theobroma cacao Disease Resistance: Discovery and Functional Characterization of Genes Regulating Plant Immunity in Perennial Crops. NCBI

Notes

A project to establish a new scientific approach for use with perennial crop plants to identify candidate loci for disease resistance using Theobroma cacao. Leaf samples were collected from the La Montaña field site at the CATIE field station in Turrialba, Costa Rica. The study focused on four genetic groups (Guiana, Iquitos, Marañon, and Nanay) and variation in resistance to Phytophthora.

Last updated: November, 2022

 plantscience.psu.edu/…

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 Disease  Population  Accession Data  Project Data

Close

Susceptible, sp. P. megakarya (Leaf Disc Test).

Note: Mean of lesion score = 3.04. Population Euleupousing

 Paulin, D. et al., 2008

×

Reference

Paulin, D., Ducamp, M. & Lachenaud, P. 2008

New sources of resistance to Phytophthora megakarya identified in wild cocoa tree populations of French Guiana. Crop Protection. 27: pp 1143–1147.

Notes

Phytophthora megakarya inoculation used strain NS269 isolated from a pod harvested in West Province, Cameroon (village of Fako). This strain is of mating type A1.

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 Disease

Close

Trinidad - CRU (1995) Cocoa Research Unit. Report for 1995. The University of the West Indies.

Lachenaud, P., Mooleedhar, V. & Couturier, C. (1997) Les cacaoyers spontanes de Guyane, nouvelles prospections. Plantations, Recherche, Developpment, Janvier-Fevrier, pp. 25-32.

Motamayor, J.C., Lachenaud, P., da Silva e Mota, J.W., Loor, R., Kuhn, D.N., Brown, J.S. & Schnell, R.J. (2008) Geographic and Genetic Population Differentiation of the Amazonian Chocolate Tree (Theobroma cacao L). PLoS ONE 3(10): e3311. doi:10.1371/journal.pone.0003311

Guiltinan, Mark (2019) Theobroma cacao Disease Resistance: Discovery and Functional Characterization of Genes Regulating Plant Immunity in Perennial Crops. NCBI

Allan Mata (2018) Accession list for the International Cacao Collection at CATIE (IC3). Personal communication.

Philippe Lachenaud (2012) CIRAD Montpellier Clone List (Excel Spreadsheet). Data supplied to ICGD by email. Dr. Philippe Lachenaud, CIRAD Montpellier, France, January 2012.

Philippe Lachenaud (2012) F. Guiana database, CIRAD-CP. Data supplied to ICGD by email. Dr. Philippe Lachenaud, CIRAD Montpellier, France, January 2012.

Paulin, D., Ducamp, M. & Lachenaud, P. (2008) New sources of resistance to Phytophthora megakarya identified in wild cocoa tree populations of French Guiana. Crop Protection. 27: pp 1143–1147.