Biodiversitas Journal of Biological Diversity
Vol. 25 No. 6 (2024)

The identification of yield components, genetic variability, and heritability to determine the superior cocoa trees in West Papua, Indonesia

ANTONIUS SUPARNO (Department of Agriculture, Faculty of Agriculture, Universitas Papua. Jl. Gunung Salju, Amban, Manokwari 98314, West Papua, Indonesia)
M. A. ARBIANTO (Agricultural Instrument Standardization Agency. Jl. Trikora Km. 20 Andai, Manokwari 98315, West Papua, Indonesia)
SARASWATI PRABAWARDANI (Department of Agriculture, Faculty of Agriculture, Universitas Papua. Jl. Gunung Salju, Amban, Manokwari 98314, West Papua, Indonesia)
PAULUS CHADIKUN (Department of Agriculture, Faculty of Agriculture, Universitas Papua. Jl. Gunung Salju, Amban, Manokwari 98314, West Papua, Indonesia)
HERMAN TATA (Agricultural Instrument Standardization Agency. Jl. Trikora Km. 20 Andai, Manokwari 98315, West Papua, Indonesia)
FIONA DJUNITA NATALIA LUHULIMA (Department of English Studies, Faculty of Letters and Culture, Universitas Papua. Jl. Gunung Salju, Amban, Manokwari 98314, West Papua, Indonesia)



Article Info

Publish Date
14 Jun 2024

Abstract

Abstract. Suparno A, Arbianto MA, Prabawardani S, Chadikun P, Tata H, Luhulima FDN. 2024. The identification of yield components, genetic variability, and heritability to determine the superior cocoa trees in West Papua, Indonesia. Biodiversitas 25: 2363-2373. One of the obstacles to increasing the productivity of cocoa is the existence of superior cocoa clones. This research, therefore, was carried out to select the superior cocoa tree candidates from the existing cocoa plantation populations over 30 years old, using a descriptive method on the yield components of superior cocoa candidates in PT. Cokran Cocoa Plantation, South Manokwari. This research was conducted from May 2020 to May 2022. The initial information on 32 superior cocoa trees was obtained from the farmers who were involved and worked at the PT. Cokran Cocoa Plantation for 30 years. Cocoa was planted on an area of 1,680 ha with a spacing of 2 x 4 m. Data on the 13 quantitative characters of the cocoa pod and cocoa beans were analyzed using ANOVA (SAS V.9 For Window). These 13 quantitative data, including 11 qualitative data of leaves and fruit were used to analyze the relationship of kinship pattern among the accessions using NTSys ver. 2.1. Results of the research show that 8 cocoa accessions had a high production potential of more than 6,000 g per tree annually, namely CKR-02, CKR-03, CKR-04, CKR-09, CKR-12, CKR-26, CKR-28, and CKR-41 accessions. Accessions that produced 1,000 g of dry cocoa beans in less than 20 pods were CKR-03, CKR-04, CKR-07, CKR-09, CKR-12, CKR-15, CKR-22, CKR-26, CKR-40, and CKR-41. Candidate cocoa clones that have the potency to produce dry cocoa beans with grade AA quality were CKR-03, CKR-04, CKR-12, CKR-26, CKR-40, and CKR-41. Wide phenotypic and genotypic coefficients of variations were found among the 32 accessions. High heritability was produced by pod length, pod girth, pod fresh mass, seed number/pod, seed fresh mass, and seed dry mass. The cluster analysis showed a wide morphological diversity of the 32 cocoa accession candidates based on the yield component characters.

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Journal Info

Abbrev

biodiv

Publisher

Subject

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

Description

The Biodiversitas Journal was first published in 2000 by the Department of Biology, FMNS, Universitas Sebelas Maret, Surakarta, Indonesia, then in 2006 it was co-published by the Society for Indonesian Biodiversity and that department; since 2017 it was also hosted by Smujo. From 2003-2012 it was ...