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MA 13 [BRA]    Theobroma cacao

 Vello, F. & Medeiros, A.G. (1965)
Expedicao botanica a Amazonica brasileira. Cacau Atualidades (Brasil) 2: pp. 47-51.

Derivation: MAnaus city.
Collected by Vello.
Location: Careiro Island, Manaus, Brazil.

Lockwood, 1973a [LOC73A]. Fruit - large with thick shells, Beans - small.

Notes:  Vello & Medeiros, 1965 [VEL65A] Collections made in 1965.

Bartley, 1997b [BAR97B] MA 1, MA 2 and MA 3 are not related to the rest of the series, in that they are selections made from seedling progenies planted in a CEPLAC experimental station near Manaus. This material was selected from locally cultivated varieties from a number of different trees planted in the Itacoatiara area, known to have been planted with cacao for over 200 years. Three selections were made from outstanding trees not necessarily representative of what was generally cultivated.

MA 11 onwards are Vello's collections.
 

Synonyms: MANAUS 13 [BRA]

Location: R. Amazonas, Amazonas, Brazil (cocoa plantation)
Date: 23 June 1965
Coordinates: 60.00 W, 3.00 S
Notes: Santo Antonio, Terra Nova, Fazenda Sto. Antonio e Canteiro
Expedition Code: 65BR
   Soria, V.J., 1965
   Vello, F. & Medeiros, A.G., 1966
   Soria, V.J., 1970
   Almeida, C.M.V.C. de et al., 1995
   Vello, F. & Medeiros, A.G., 1965

'Amelonado' Population
 Reference

 HELD IN

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List received in 2012   Reference
• Accession: 122
   - Local Name: MA 13
   - Year of Accession: 1984
List received in 1987   Reference
• Accession: 81
   - Local Name: MA 13 [BRA]
   - Year of Accession: 1966
List received in 2015   Reference
• Accession: MA 13 Quadra 5
   - Local Name: MA 13
List received in 2018   Reference
• Accession: 10352
   - Local Name: MA-13
   - Year of Accession: 1979

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Susceptible, 87.00 % Infection
Note: External Severety = 3.7 and Internal Severety = 4.2
 Phillips, W., 1996
Susceptible, 87.00 % Infection
Note: External Severety = 3.4 and Internal Severety = 4.2
 Phillips, W., 1997
Moderate Resistance, sp. P. palmivora (Pod).
Note: Unripe, Attached and not wounded
 Morera, J., 1993
Absent (Expedition data).
 Vello, F. & Medeiros, A.G., 1966

Seed Index: 120.4 (dried beans per 100g)
Productivity: high
 Reference

Colour Dark Purple: Present
Colour Light Purple: Present
Colour Grey: Absent
Colour White: Absent
Colour Mottled: Absent
Number: 28.0
Maximum Number: 43
Cotyledon Wet Weight: 1.36 g
Cotyledon Dry Weight: 0.83 g
Cotyledon Length: 23.5 mm
Cotyledon Width: 11.2 mm
Cotyledon Thickness: 7.3 mm
 Reference
Colour: purple
Shape: flat
Size: medium
Note: expedition data
 Reference

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Rugosity: moderate
 Reference
Basal Constriction: moderate
Apex Form: obtuse
Rugosity: very slight
Husk Thickness: 7.7 mm (9.2 - 6.2)
Length: 142.0 mm
Breadth: 79.0 mm
Colour: absent anthocyanin
Weight: 370.0 g
Pods Per Tree: 7
Hardness: hard
Length Breadth Ratio: 1.79
Note: ratio of distances between ridges within a pair and between ridges of two different pairs = 0.80
 Reference
Shape: cundeamor
Colour: green
 Reference
Shape: amelonado
Rugosity: moderate
Husk Thickness: thin
Size: medium
Colour: green - white
 Reference

Colour: reddish brown
 Reference

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Self Compatibility: self incompatible
 Reference
Ligule Colour: slight anthocyanin (apical)
Stamen Colour: anthocyanin absent
Sepal Colour: dull green
Sepal Width: 2.06 mm
Sepal Length: 6.23 mm
Ligule Length: 5.95 mm
Ligule Width: 1.80 mm
Ovary Colour: anthocyanin absent (apical)
Ovary Width: 0.93 mm
Ovary Length: 1.14 mm
Style Length: 2.10 mm
Staminode Length: 5.70 mm
Pedicel Colour: pale red
Note: Translation of Methuen colour codes.
 Reference
Self Compatibility: self incompatible
 Reference
Ligule Colour: yellow
Stamen Colour: anthocyanin absent
Sepal Shape: wide
Ligule Shape: rhomboid
Note: expedition data
 Reference

Vello, F. & Medeiros, A.G. (1965) Expedicao botanica a Amazonica brasileira. Cacau Atualidades (Brasil) 2: pp. 47-51.
Soria, V.J. (1965) Notes on the cocoas collected by the Brazilian-International expedition to some areas of the Brazilian Amazon Basin. Cacao (Costa Rica) 10: pp. 10-13.
Vello, F. & Medeiros, A.G. (1966) Expedicao botanica a Amazonia Brasileira. Communicado ao Pessoal Technico No. 20. Co-ordenacao Technica. CEPLAC/CEPEC, Brazil, pp. 13.
Soria, V.J. (1970) The latest cocoa expeditions to the Amazon Basin. Cacao (Costa Rica) 15: pp. 5-15.
Almeida, C.M.V.C. de, Machado, P.F.R., de, Barriga, J.P. & Silva, F.C.O. da. (1995) Coleta da cacau (Theobroma cacao) da amazonia brasileira: uma abordagem historica e analitica. CEPLAC, SRAO, Porto Velho, RO., Brasil. pp. 92.
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
CEPEC (2012) Accession list for the CEPEC (Bahia, Brazil) collection. Dr. José Luis Pires, personal communication, February 2012.
Almeida, C.M.V.C. de, Barriga, J.P., Machado, P.F.R. & Bartley, B.G.D. (1987) Evolucao do programa de conservacao dos recursos geneticos de cacau na Amazonia Brasileira. CEPLAC/DEPEA, Boletim Tecnico, Belem, Brasil 5: pp.108.
Almeida, Caio Márcio Vasconcellos Cordeiro de, Francisco Antônio Neto, Acácio de Paula, Silva, José Raymundo Pires Medeiros & Antonio de Almeida Lima (2015) RECURSOS GENÉTICOS DE CACAUEIRO EM RONDÔNIA: RETROSPECTIVA HISTÓRICA, ORIGEM E INVENTÁRIO [Genetic Resources of Cacao in Rondônia: Historical Overview, Origin and Inventory]. Agrotrópica (Itabuna) 27 (2): 93–124
Allan Mata (2018) Accession list for the International Cacao Collection at CATIE (IC3). Personal communication.
Phillips, W. (1996) Cocoa cultivar reaction when innoculated with Moniliophthora roreri. Unpublished data supplied by W. Phillips, CATIE, Costa Rica. Personal communication
Phillips, W. (1997) Results of the artificial inoculation of Moniliophthora rorei using the Aspersion method. Unpublished data supplied by W. Phillips, CATIE, Costa Rica. Personal communication
Morera, J. (1993) Reaction of clones to Phytophthora palmivora. J. Morera, CATIE, Costa Rica. Personal Communication.
Costa Rica - CATIE (1981) Genetic Resources of Cacao. A Catalogue of the CATIE Collection. J.M.M. Engels, Tropical Agricultural Research and Training Centre, CATIE, Turrialba, Costa Rica. Technical Bulletin No. 7: pp. 191.
Brazil - CEPEC (1987) List of clones in the CEPEC, Bahia, Brazil collection. Computer printout from CEPEC. Supplied by B.G.D. Bartley, CEPEC, Brazil.
Morera, J., Paredes, A. & Mora, A. (1991) Germoplasma de cacao en el CATIE entre 1947 y 1991, Programa II: Generacion y transferencia de tecnologia. IICA, San Jose, Costa Rica, pp. 49.