Promising Prang Besar cocoa clones

Chong C.F., . and Shepherd R., . (1986) Promising Prang Besar cocoa clones. [Proceedings Paper]

In 1965 Prang Besar Research Station embarked on an ambitious breeding and selection programme to produce improved cocoa planting materials. To date 714 progenies and over 4 000 clones including 1 222 clones in a joint trial with Malaysian Agriculture and Research Development Institute MARDI have been established in field trials. Clones derived mainly from outstanding seedlings in F1 hybrid trials and commercial plantings on Harrisons Malaysian Plantations Berhad estates were evaluated initially in preliminary proof clone trials. Outstanding clones in these were subsequently tested in further proof trials from which the most promising clones were selected for commercial polyclone planting. Critical selection standards were applied at all stages of evaluation. Besides high yield potential considerable emphasis had been placed on secondary characteristics especially bean size pod conversion ratio nib fat content tolerance of disease tree vigour growth form etc. This paper reported the results of five preliminary proof clone established before 1977 and four further proof clone trials set up between 1974 and 1980. Of the 837 clones evaluated twelve clones had been selected for commercial planting. The paper also considered the characteristics and yield performances of these clones

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Abstract

In 1965 Prang Besar Research Station embarked on an ambitious breeding and selection programme to produce improved cocoa planting materials. To date 714 progenies and over 4 000 clones including 1 222 clones in a joint trial with Malaysian Agriculture and Research Development Institute MARDI have been established in field trials. Clones derived mainly from outstanding seedlings in F1 hybrid trials and commercial plantings on Harrisons Malaysian Plantations Berhad estates were evaluated initially in preliminary proof clone trials. Outstanding clones in these were subsequently tested in further proof trials from which the most promising clones were selected for commercial polyclone planting. Critical selection standards were applied at all stages of evaluation. Besides high yield potential considerable emphasis had been placed on secondary characteristics especially bean size pod conversion ratio nib fat content tolerance of disease tree vigour growth form etc. This paper reported the results of five preliminary proof clone established before 1977 and four further proof clone trials set up between 1974 and 1980. Of the 837 clones evaluated twelve clones had been selected for commercial planting. The paper also considered the characteristics and yield performances of these clones

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Item Type:	Proceedings Paper
Additional Information:	Available at Perpustakaan Sultan Abdul Samad Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia. SB267 I61 1984 Call Number
AGROVOC Term:	THEOBROMA CACAO
AGROVOC Term:	CLONES
AGROVOC Term:	MALASIA PENINSULAR/ PRUEBAS
AGROVOC Term:	RENDIMIENTO
AGROVOC Term:	MATERIALES DE PROPAGACION
Geographical Term:	MALAYSIA
Depositing User:	Ms. Norfaezah Khomsan
Last Modified:	24 Apr 2025 05:25
URI:	http://webagris.upm.edu.my/id/eprint/14356

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