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CLEM /S-62-2 Group Name Theobroma cacao

Bartley, B.G.D. (1993)
Notes on the meaning and origins of clone names. B.G.D Bartley. Personal Communications.

Derivation: CLEMentina farm.
Collected by Bartley.
Location: ICTA, Ecuador.

Notes: Material labelled CLEM and CLM were previously believed to be the same (End et al. 1992) [END92A]. They are now know to be of separate groups of clones.

Progeny from S 62 in Trinidad Cocoa Board Collection 1967.

Bartley, 1993a [BAR93A]. The material introduced into Trinidad in 1967 was identified as H. Clementina S 62 O.P. and H. CLEM. NAC. 5. and thus both were probably seed introductions.

The clone S 62 came from Vinces (according to Muntzing) and is therefore probably the same as EET 62 [ECU]. The H. CLEM 5/ may refer to the Nacional material.

The clones held at ICGT today are CLEM 5/62/1 and CLEM S-62 and it is unclear whether both of these clones are CLEM S62/ progeny (slightly mislabelled) or whether CLEM 5/62/1 represents a progeny of CLEM 5. In either case this material is not the same as Pound's CL and CLM material.

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Synonyms: CL 5 /62, CLEM /S-62, CLM /S-62, CLM 5 /62, H CLEM /S-62-2, HCLEM /S-62, H CLEM /S-62, HCLEM 5 /62

HELD IN

Trinidad and Tobago, International Cocoa Genebank, Trinidad (ICG,T): List received in 2011 Reference

Reference

CRU 2011
ICG,T accessions. CRU website.
Notes

Website visited 12th April 2011

Link Unavailable [http://sta.uwi.edu/cru/icgt-accessions.asp]; • Local Name: CLEM /S-62-2

DISEASE

Phytophthora: Moderate Resistance, sp. P. palmivora (Pod).; Note: Unripe, Unattached and not wounded; Iwaro, D., 1998

Reference

Iwaro, D. 1998
Evalation of accessions for Black Pod. Personal Communication 30th October 1998. Data sent by email from Dr. Iwaro.
Notes

Trinidad - CRU, University of the West Indies Datafile: DIS_PHDS - Disease reaction to Phytophthora Experimental conditions: Inoculation techinique used - spray method. Inoculum concentration: 100,000 zoospores/ml. Incubated for four days. Character Data: The following descriptions are used to segregate clones according to reaction: no visible symptoms = highly resistant to penetration, 1-5 localised lesions = resistant, 6-15 localised lesions = moderately resistant, >15 localised lesions = partially resistant/resistant to spread of lesion alone, 1-5 expanding lesions = partially resistant/resistant to penetration alone, 6-15 expanding lesions = moderately susceptible, >15 expanding lesions = susceptible, coalesced lesions = highly susceptible Disease - Phytophthora palmivora, P. megakarya (Local Names: Black Pod, Podredumbre negra, Pourriture Brune, Podridao parda).

Disease

BUTTERFAT

Trinidad - CRU, 1998: Butterfat Content: 53.40 %; Testa: 5.80 %; Reference

Reference

Trinidad - CRU 1998
Fat Analysis Data. Data supplied on computer diskette by F. Bekele, CRU, Trinidad.
Notes

Trinidad - CRU, University of the West Indies Datafile: TTOFATDS TTO - Fat Analysis Germplasm: Data is provided on 410 accessions. Environment: No details given. Descriptors: Data for the fat content of the shell, including standard error and the butterfat content is presented. Methods: Ripe, open pollinated pods were harvested, 2 pods from each of 5 trees (10 pods per accession) were selected. The beans were then mixed thoroughly and a sub-sample taken. The sub-sample was then cleaned to remove the mucliage, oven dried and stored at room temperature until analysis. For each accession 2 bean samples (each consisting of 20 beans) were taken from the bulked sample. The beans were shelled and eaach sample was groung using a coffee grinder (2x30 seconds). The ground samples were then dried for 16 hours at 110 degrees C, cooled and stored in a dessicator at 25 degrees C until analysis. From the cried ground samples, a 2 gram sub-sample was weighed into a beaker, 100 ml of 4.0M HCl was added and the sample boiled for 30 minutes. The boiled sample was filtered and the residue washed with distilled water until clear of pigment. After washing, the filtered sample was placed in an extraction thimble and dried for 16 hours at 60 degrees C. The butterfat from the bean samples was extracted using the Soxtec System (Tecetor). Each dried sample was extracted for one hour using petroleum ether (40-60) as the solvent. The butterfat extracted from the sample was then dried in an oven for 30 minutes at 100 degrees C, cooled in a dessicator and the percentage butterfat determined on a dry matter basis.

Butterfat

REFERENCES

Bartley, B.G.D. (1993) Notes on the meaning and origins of clone names. B.G.D Bartley. Personal Communications.

CRU (2011) ICG,T accessions. CRU website.

Iwaro, D. (1998) Evalation of accessions for Black Pod. Personal Communication 30th October 1998. Data sent by email from Dr. Iwaro.

Trinidad - CRU (1998) Fat Analysis Data. Data supplied on computer diskette by F. Bekele, CRU, Trinidad.