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MO 81    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: MO 18, MORONA 81

 PEDIGREE DETAILS

 Mother to:
TSH 858    Trinidad - Las Hermanas, No Date

 HELD IN

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List received in 2012   Reference
• Accession: 1017
   - Local Name: MO 81
• Accession: 1017
   - Local Name: MO 81
List received in 2012   Reference
• Local Name: MO-81
   - Year of Accession: 1996
List received in 1989   Reference
• Local Name: MO 81
   - Year of Accession: 1977
List received in 2008   Reference
• Local Name: Mo 81
List received in 1990   Reference
• Local Name: MO 81
List received in 1998   Reference
• Local Name: MO 81
List received in 2011   Reference
• Local Name: MO 81

 DISEASE

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 Phytophthora
19.45 % Infection (Pod).
Note: percentage of infected pods. Rank calculated using Newman-Keuls test at 5% = BCD
 Sounigo, O. et al., 1995
Intermediate, sp. P. palmivora (Pod).
 Clement, D. & Sounigo, O., 1992
Moderately Susceptible, sp. P. palmivora (Leaf).
 Kebe, 1999
 Vascular Streak Dieback
44.20 % Infection (Field Reaction).
Note: 29.7% of trees with <30% infected branches, 7.3% of trees with 30 to 70% infected branches, 7.3% of trees with >70% infected branches.. Sime Darby Plantations, Devon Estate. Recorded as MO 18 in one table and MO 81 in another. It is most likely to be MO 81.
 Lam, K.S., 1992
 Witches Broom
Tolerant
 Sreenivasan, T.N., 1987

 PESTS

 Mirids
Resistant
 K. F. N’Guessan et al., 2003

 YIELD

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 Malaysia - Applied Agriculture, 1992
Seed Index: 102.0 (dried beans per 100g)
Pod Index: 26.2 (pods per kg dried beans)
 Reference
 Malaysia - BAL Plantations, 1991
Seed Index: 138.8 (dried beans per 100g)
Pod Index: 32.9 (pods per kg dried beans)
 Reference
 Frances Bekele & Gillian Bidaisee, 2022
Pod Index: 37.7 (pods per kg dried beans)
 Reference
 Lam, K.S., 1992
Seed Index: 99.1 (dried beans per 100g)
Pod Index: 38.2 (pods per kg dried beans)
 Reference
 Sounigo, O. et al., 1995
Yield: 3924 kg ha-1 yr-1
 Reference

 BEAN

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 Malaysia - Applied Agriculture, 1992
Number: 38.8
Dry Weight: 0.98 g
 Reference
 Malaysia - BAL Plantations, 1991
Number: 42.3
Total Dry Weight: 30.4 g
Dry Weight: 0.72 g
Note: 36 plants sampled
 Reference
 Bartley, B.G.D., 1970
Size: small
 Reference
 Frances Bekele & Gillian Bidaisee, 2022
Colour: dark purple
Shape: ovate
Number: 39.0
Total Wet Weight: 37.7 g
Cotyledon Dry Weight: 0.68 g
Cotyledon Length: 20.0 mm
Cotyledon Width: 10.3 mm
 Reference
 Lam, K.S., 1992
Number: 41.1
Dry Weight: 1.00 g
 Reference
 Palaniappan, S. & Shuhaimi Shamsuddin, 1992
Number: 45.3
Dry Weight: 0.86 g
 Reference

 BUTTERFAT

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 Malaysia - BAL Plantations, 1991
Butterfat Content: 58.60 %
Maximum Butterfat Content: 59.25 %
Minimum Butterfat Content: 57.44 %
Note: 9 plants sampled
 Reference
 Frances Bekele & Gillian Bidaisee, 2022
Testa: 6.30 %
 Reference
 Trinidad - CRU, 1998
Butterfat Content: 51.17 %
Testa: 12.73 %
 Reference

 FRUIT

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 Bartley, B.G.D., 1970
Size: medium
 Reference
 Frances Bekele & Gillian Bidaisee, 2022
Shape: obovate
Basal Constriction: slight
Apex Form: mammillate
Rugosity: moderate
Length: 141.0 mm
Breadth: 70.0 mm
Colour: anthocyanin absent
Hardness: hard
Note: Hardness > 2.0 Mpa
 Reference
 Palaniappan, S. & Shuhaimi Shamsuddin, 1992
Length: 176.5 mm
Breadth: 89.4 mm
Weight: 511.2 g
Length Breadth Ratio: 2.00
 Reference

 FLUSH

 Frances Bekele & Gillian Bidaisee, 2022
Colour: intense anthocyanin
 Reference

 FLOWER

 Malaysia - BAL Plantations, 1991
Self Compatibility: self incompatible
 Reference
 Frances Bekele & Gillian Bidaisee, 2022
Ligule Colour: slight anthocyanin
Stamen Colour: anthocyanin absent
Sepal Length: 8.97 mm
Ligule Width: 2.77 mm
Ovule Number: 44
Style Length: 2.24 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.
Trinidad - Las Hermanas (No Date) Key to labelling codes. Unpublished report, Las Hermanas Experiment Station, Trinidad. p.1.
CEPEC (2012) Accession list for the CEPEC (Bahia, Brazil) collection. Dr. José Luis Pires, personal communication, February 2012.
Mars Center for Cocoa Science (2012) Accession list for the Mars Center for Cocoa Science. Jean-Philippe Marelli, personal communication, February 2012.
Cote d'Ivoire - IRCC (1989) Liste des clones en collection. Unpublished Report, IRCC Bingerville, Cote d'Ivoire, Doc. No. 192. D. Clement, IRCC, Cote d'Ivoire. Personal Communication.
Haeser, E. (2008) Accession list for Bah Lias Research Station, PT.PP. London Sumatra, Indonesia. Personal communication, March 2010.
Malaysia - ARC Tuaran (1990) List of clones held in the Dept. of Agriculture's collection, at Sabah, Tuaran, Malaysia. E.B. Tay, Malaysian Cocoa Board, Malaysia. Personal Communication.
PNG - Cocoa & Coconut Research (1998) Current list of cocoa accessions at the PNG CCRI. Mr. Mathias Faure, Personal Communication.
CRU (2011) ICG,T accessions. CRU website.
Sounigo, O., N'Goran, J., Coulibaly, N., Clement, D. & Lachenaud, P. (1995) Evaluation de clones de cacaoyers pour la productivite, la resistance aux mirides et la resistance a la pourriture des cabosses. In: Proceedings of the 11th International Cocoa Research Conference, Yammoussoukro, Cote d'Ivoire, 1993. Cocoa Producers' Alliance, Lagos, Nigeria. pp. 375-381.
Clement, D. & Sounigo, O. (1992) Ivory Coast Database. D. Clement & O. Sounigo, IRCC, Bingerville, Cote d'Ivoire. Personal Communication.
Kebe (1999) Data from Cote d'Ivoire on black pod resistance. Kebe, report on CAOBISCO project. Forwarded to ICGD by Dr. A.B.Eskes, IPGRI.
Lam, K.S. (1992) Performance of imported clones in Sime Darby Plantations. In: Unpublished Proceedings of MCGC Mini-Seminar on the Performance of Imported Cocoa Clones, 13th October, 1992. Kuala Lumpur, Malaysia.
Sreenivasan, T.N. (1987) ICGT Germplasm at Marper Farm showing freedom from cushion Brooms and vegetative brooms. Unpublished report, CRU, Trinidad and Tobago.
K. F. N’Guessan, A. B. Eskes & Ph. Lachenaud (2003) Etude de la Resistance du Cacaoyer aux Mirides : Classification des Grands Groupes de Cacaoyers en Fonction de Leur Niveau de Resistance ou Sensibilite. In: Proceedings of the 14th International Cocoa Research Conference, Accra, Ghana (October 2003). Cocoa Producers' Alliance, Lagos, Nigeria.
Malaysia - Applied Agriculture (1992) Data from Applied Agriculture Research Unit (AARU). In: Unpublished Proceedings of MCGC Mini-Seminar on the Performance of Imported Cocoa Clones, 13th October 1992, Kuala Lumpur, Malaysia: pp. 4.
Malaysia - BAL Plantations (1991) Results from cocoa butter content determinations using Nuclear Magnetic Resonance (NMR) analysis. G. Lockwood, CDC, U.K. Personal Communication.
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.
Palaniappan, S. & Shuhaimi Shamsuddin (1992) Early evaluation of some cocoa germplasm at Pusut Perkhidmatan Pertanian Tun Razak. In: Unpublished Proceedings of MCGC Mini-Seminar on the Performance of Imported Cocoa Clones, 13th October, 1992. Kuala Lumpur, Malaysia.
Trinidad - CRU (1998) Fat Analysis Data. Data supplied on computer diskette by F. Bekele, CRU, Trinidad.