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PA 20 [PER]    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: PArinari.
Collected by Pound.
Location: Parinari, Peru.

Pound, 1938a: [POU38A] type 1 - long, generally warty pods with a pronounced bottleneck and a conspicuous point, type 2 - lack the pronounced bottleneck, type 3 - pods shorter and lack both the pronounced bottle neck and point, type 4 - smooth lagarta, ie with bottle neck and point but with shallow furrows and a smooth shell, type 5 - as type 1 but with very small beans, type 6 - short, 10 ridged oval, warty pods, sometimes with red tint. Posnette, 1945A [POS45A]. Parinari type has long petioles (2-3 cm) with pulvini separated by a long, deep constriction even when young. The stamen filaments are not pigmented.

Notes:  Selections from the region around Parinari.

Pound, 1938a [POU38A]. Pods probably collected from some 20 trees free of Witches' Broom in a population of type 1,2,3, and 4. Further collections may have made around Porvenir (between the Boca del Huallaga and Boca del Pastaza) from types 5 and 6.

Pound, 1943b [POU43B]. 277 plants were planted at Marper farm.

Bartley, 1998a [BAR98A] Parinari means tree and it is the name of a place on the River Amazon (Maranon) in Peru. However it is believed to refer to a region rather than a specific place. Types 5 and 6 were collected from along the whole stretch of the Maranon River.
 

Synonyms: PARINARI 20 [PER]

'Maranon' Population
Subgroup: 'Parinari IV'   Reference

 HELD IN

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 Benin, UnitĂ© de Recherche CafĂ© et Cacao (URCC)
List received in 2012   Reference
• Local Name: Pa 20
List received in 1989   Reference
• Local Name: PA 20 [PER]
   - Year of Accession: 1985
List received in 2012   Reference
• Local Name: PA 20
   - Year of Accession: 1981
List received in 2008   Reference
• Local Name: Pa 20
List received in 1990   Reference
• Local Name: PA 20 [PER]
List received in 2011   Reference
• Local Name: PA 20 [PER]

Resistant
 Lamin, K., 1992
Tolerant
 Bong, C.L. & Phua, P.K., 1989

Pod Index: 23.3 (pods per kg dried beans)
 Reference

Colour: dark purple
Shape: elliptical
Number: 36.0
Total Wet Weight: 63.7 g
Cotyledon Dry Weight: 1.19 g
Cotyledon Length: 22.1 mm
Cotyledon Width: 13.4 mm
 Reference

Testa: 5.80 %
 Reference

Shape: elliptical
Basal Constriction: strong
Apex Form: acute
Rugosity: slight
Length: 157.0 mm
Breadth: 88.0 mm
Colour: anthocyanin absent
Hardness: hard
Note: Hardness > 2.0 Mpa
 Reference

Colour: slight anthocyanin
 Reference

Ligule Colour: slight anthocyanin
Stamen Colour: anthocyanin absent
Sepal Length: 7.05 mm
Ligule Width: 2.17 mm
Ovule Number: 37
Style Length: 2.31 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
IRCC, Benin. (2012) Liste des Souches Parentales de Cacaoyer (Niaouli). Mr Djima Aly, personal communication, March 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.
CRIG (2012) Cocoa accessions held in the Cocoa Research Institute of Ghana (CRIG). Francis Kwame Padi, personal communication, February 2012.
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.
CRU (2011) ICG,T accessions. CRU website.
Lamin, K. (1992) Data from Malaysian Cocoa Board. In: Unpublished Proceedings of MCGC Mini-Seminar on the Performance of Imported Cocoa Clones, 13th October, 1992. Kuala Lumpur, Malaysia.
Bong, C.L. & Phua, P.K. (1989) Screening of hybrid materials for resistance to VSD. In: Research on Cocoa VSD in Sabah. Technical Bulletin No. 9, Dept. of Agriculture, Sabah, Malaysia. pp. 43-39.
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.