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MO 90    Theobroma cacao

 Pound, F.J. (1938)
Cacao and Witchbroom Disease of South America with notes on other species of Theobroma. Archives of Cocoa Research 1: pp. 26-71.

Derivation: river MOrona.
Collected by Pound.
Location: R. Morona, Peru.

Pound, 1938a [POU38A]. Fruit - Short, oval, warty, some types with red tint.

Notes:  Collected in 1937.

Pound, 1938a [POU38A]. Pods may have been collected from one tree with no Witches Broom infection.

Bartley, 1993a [BAR93A]. It is likely that accessions recorded with high numbers (>100?) are probably MOQ accessions since Pound, 1943b [POU43B] states that 80 plants were planted at Marper farm.
 

Synonyms: MORONA 90

'Nacional' Population
Subgroup: 'Morona'   Reference

 HELD IN

List received in 1994   Reference
• Local Name: MO 90
 Trinidad and Tobago, International Cocoa Genebank, Trinidad (ICG,T)
List received in 2011   Reference
• Local Name: MO 90

Pod Index: 36.6 (pods per kg dried beans)
 Reference

Colour: dark purple
Shape: ovate
Number: 42.0
Total Wet Weight: 43.5 g
Cotyledon Dry Weight: 0.65 g
Cotyledon Length: 18.9 mm
Cotyledon Width: 10.2 mm
 Reference

Testa: 11.50 %
 Reference

Size: medium
 Reference
Shape: elliptical
Basal Constriction: slight
Apex Form: mammillate
Rugosity: moderate
Length: 159.0 mm
Breadth: 81.0 mm
Colour: anthocyanin absent
Hardness: moderate
Note: Hardness > 1.6 and <= 2.0 Mpa
 Reference

Colour: slight anthocyanin
 Reference

Ligule Colour: moderate anthocyanin
Stamen Colour: intense anthocyanin
Sepal Length: 7.04 mm
Ligule Width: 2.51 mm
Ovule Number: 46
Style Length: 2.32 mm
Pedicel Colour: reddish
 Reference

Pound, F.J. (1938) Cacao and Witchbroom Disease of South America with notes on other species of Theobroma. Archives of Cocoa Research 1: pp. 26-71.
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
Honduras - CEDEC (1994) List of accessions in CEDEC, La Masica, Honduras. J.A. Sanchez, FHIA, Honduras. Personal Communication.
CRU (2011) ICG,T accessions. CRU website.
Frances Bekele & Gillian Bidaisee (2022) Morphological data from the International Cocoa Collection (ICG,T) maintained by the Cocoa Research Centre (CRC), Trinidad & Tobago. Unpublished data on fruit, bean, flower and flush morphology supplied as an Excel spreadsheet by Frances Bekele. Last update March 2022.
Bartley, B.G.D. (1970) A preliminary catalogue of the cacao germplasm held at the University of the West Indies, Trinidad. University of the West Indies, St. Augustine, Trinidad.