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RIM 78 [MEX]    Theobroma cacao

 Hunter, J.R. (1961)
The status of cacao variety improvement work in the Western Hemisphere. Cacao (Costa Rica) 4: pp. 1-16.

Derivation: Rosario Izapa Mexico.
Collected by del Arco & Spencer.
Location: Tuxclachico, Chiapas, Mexico.

Hunter, 1961a [HUN61A]. Fruit - Long, thin Soconusco type. Seed - white. Bartley, 1997a [BAR97A]. Most of the genotypes are very similar with regard to their vegetative and floral characteristics. The fruit shapes also show very little variation as do most other fruit characteristics. Most of these genotypes have fruit with a light green colour and the others have some degree of anthocyanin pigmentation.

Notes:  Hunter, 1961 [HUN61A] Selections from Hda La Rioja. Selections from the Pacific coast with some MATINA genes.

In the original format of the name was composed of a number with "R" or "RIM" as suffix to that.
 

Synonyms: MEX 78 [MEX], MX 78 [MEX], R 78 [MEX]

 HELD IN

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List received in 2012   Reference
• Accession: 337
   - Local Name: RIM 78
   - Year of Accession: 1979
List received in 2018   Reference
• Accession: 10438
   - Local Name: RIM-78
   - Year of Accession: 1960
 Guatemala, Estacion Exeparimental Los Brillantes
List received in 1994   Reference
• Local Name: R 78 [MEX]
   - Year of Accession: 1955
List received in 1992   Reference
• Local Name: RIM 78 [MEX]
   - Year of Accession: 1945
List received in 2016   Reference
• Accession: PI 241172     GRIN-Global 
   - Local Name: RIM 78 [MEX]
   - Year of Accession: 1961

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Susceptible, 100.00 % Infection
Note: External Severety = 5.0 and Internal Severety = 5.0
 Phillips, W., 1997
Susceptible, 100.00 % Infection
Note: External Severety = 5.0 and Internal Severety = 5.0
 Phillips, W., 1996
Moderate Resistance, sp. P. palmivora (Pod).
Note: Unripe, Attached and not wounded
 Morera, J., 1993

Seed Index: 77.5 (dried beans per 100g)
Productivity: low
 Reference
Seed Index: 76.9 (dried beans per 100g)
Pod Index: 19.2 (pods per kg dried beans)
 Reference

Colour Dark Purple: Present
Colour Light Purple: Present
Colour Grey: Absent
Colour White: Present
Colour Mottled: Present
Number: 34.5
Maximum Number: 42
Cotyledon Wet Weight: 2.03 g
Cotyledon Dry Weight: 1.29 g
Cotyledon Length: 24.0 mm
Cotyledon Width: 13.7 mm
Cotyledon Thickness: 9.3 mm
 Reference
Number: 32.6
Length: 23.5 mm
Width: 14.2 mm
Thickness: 9.5 mm
Dry Weight: 1.40 g
Cotyledon Dry Weight: 1.30 g
 Reference

Testa: 7.14 %
 Reference

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Rugosity: intense
 Reference
Basal Constriction: absent
Apex Form: slightly acute
Rugosity: moderate
Husk Thickness: 10.9 mm (13.7 - 8.1)
Length: 185.0 mm
Breadth: 86.0 mm
Colour: absent anthocyanin
Weight: 579.0 g
Pods Per Tree: 3
Hardness: hard
Length Breadth Ratio: 2.15
Note: ratio of distances between ridges within a pair and between ridges of two different pairs = 0.56
 Reference
Shape: angoleta
Rugosity: intense
Husk Thickness: 12.5 mm (10 - 15)
Length: 200.0 mm
Breadth: 91.0 mm
Colour: yellow
Weight: 566.7 g
Husk Weight: 444.00 g
Length Breadth Ratio: 2.19
 Reference
Shape: amelonado
Colour: green
 Reference

Colour: olive brown
 Reference

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Ligule Colour: anthocyanin absent (apical)
Stamen Colour: anthocyanin absent
Sepal Colour: greyish green
Sepal Width: 2.21 mm
Sepal Length: 8.13 mm
Ligule Length: 7.87 mm
Ligule Width: 2.47 mm
Ovary Colour: anthocyanin absent (apical)
Ovary Width: 1.03 mm
Ovary Length: 1.26 mm
Style Length: 2.29 mm
Staminode Length: 7.57 mm
Pedicel Colour: pale red
Note: Translation of Methuen colour codes.
 Reference
Sepal Width: 2.20 mm
Sepal Length: 7.80 mm
Ligule Length: 3.60 mm
Ligule Width: 3.00 mm
Ovary Width: 1.00 mm
Ovary Length: 1.80 mm
Ovule Number: 39
Style Length: 2.40 mm
Staminode Length: 6.80 mm
Pedicel Length: 2.30 mm
 Reference
Self Compatibility: self incompatible
 Reference

Hunter, J.R. (1961) The status of cacao variety improvement work in the Western Hemisphere. Cacao (Costa Rica) 4: pp. 1-16.
CEPEC (2012) Accession list for the CEPEC (Bahia, Brazil) collection. Dr. José Luis Pires, personal communication, February 2012.
Allan Mata (2018) Accession list for the International Cacao Collection at CATIE (IC3). Personal communication.
Guatemala - Los Brilliantes (1994) Lista de clones existentes en la Estacion de Investigacion y Produccion Agricola "Los Brillantes" a Agosto 1994. M.T. Reyes Barrios, EIAP Guatemala. Personal Communication.
Lopez-Baez, O., Mulato-Brito, J. & Lopez-Arroyo, J. (1992) Recursos geneticos del cacao, Theobroma cacao L. disponibles en Mexico. Agricultura Tecnico Mexicana 18(1-2): pp. 25-38.
USDA, ARS Tropical Agriculture Research Station, Mayaguez, Puerto Rico. (2016) List of cocoa accessions held at Mayaguez in April 2016. USDA-ARS GRIN-Global. [Online Database] National Germplasm Resources Laboratory, Beltsville, Maryland.
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
Phillips, W. (1996) Cocoa cultivar reaction when innoculated with Moniliophthora roreri. 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.
Lopez-Baez, O. (1995) Caracteristicas del fruto del germoplasma de cacao, Theobroma cacao L., seleccionado en Rosario Izapa, Chiapas. Agricultura Tecnico Mexicana 21(2): pp. 127-137.
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.
Lopez-Baez, O. & Mendel-Wong, D. (1992) Caracteristicas de la flor y semilla del germoplasma de cacao, Theobroma cacao L., seleccionado en Rosario Izapa, Chiapas. Agricultura Tecnico Mexicana 18(1-2): pp. 39-48.