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Bayu Setyawan
ICCRI
Agriculture, Biological Sciences & Forestry

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Chromatographic identification of leaf color characteristics on fine-flavor and bulk cacao as selection indicator Indah Anita Sari; Bayu Setyawan; Marcelinus A.S. Adhiwibawa; Agung Wahyu Susilo
Pelita Perkebunan (a Coffee and Cocoa Research Journal) Vol 32 No 1 (2016)
Publisher : Indonesian Coffee and Cocoa Research Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/iccri.jur.pelitaperkebunan.v32i1.210

Abstract

A problem encountered in plant breeding process to determine bean color quality of fine-flavor cocoa is a long selection period. Preliminary results indicatedthat the fine-flavor cocoa has a low color reflectance than bulk cocoa. The objectiveof this study is to find more applicable and easier method to do the early detectionof fine-flavor cocoa on the breeding population. Detection of the leaf color haracteristics was done by chromatographic and spectrophotometry analysis. hromatographic analysis was carried out in Kaliwining Experimental Station, IndonesianCoffee and Cocoa Research Institute using complete random design consistedof two types of cocoa; fine-flavor (10 clones) and bulk cocoa (10 clones). pectrophotometric analysis was conducted at Ma Chung University, Malang, East Java.Four clones of bulk cocoa and six clones of fine flavor cocoa were used in thisanalysis. The results of the study showed that the flush color characteristics of thefine-flavor cocoa were different from the bulk cocoa characteristics as shown bythe differences in the value of L*, b* and anthocyanin content. Flush characteristic s ofthe fine-flavor cocoa had brighter color, more toward green with higher yellowlevel, while the bulk cocoa had darker flush, red and lower yellow level. Thecolor parameter of L* and b* had a higher genetic variation compared with theenvironment variation. However, the parameter a* had a higher environmental variation compared with genetic variation. Grouping of fine-flavor cocoa and bulk cocoacould be done through the detection of flush anthocyanin content, when tendencyof flush anthocyanin content on fine-flavor cocoa was lower than bulk cocoa.The detection of flush color particularly L* and b* parameters through hromatographic analysis and anthocyanin content through spectrophotometric analysismay be used as a criteria for selection the fine flavor cocoa on seedling phase.
Determination of Selection Index of Cocoa (Theobroma cacao L.) Yield Traits Using Regression Methods Bayu Setyawan; Taryono .; Suyadi Mitrowihardjo
Pelita Perkebunan (a Coffee and Cocoa Research Journal) Vol 32 No 2 (2016)
Publisher : Indonesian Coffee and Cocoa Research Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/iccri.jur.pelitaperkebunan.v32i2.229

Abstract

The increasing chocolate consumption has not been followed by growing production of dry cocoa beans. In order to support the increase in cocoa production, planting materials with high yield are needed. The objective of this research was to determine the components of cocoa traits affecting weight of dry cocoa beans, and set a selection index for superior cocoa trees. The experiment material were four cocoa hybrid populations of which their family ancestry were unknown, and were planted on Samigaluh Plantation, Yogyakarta, and Segayung Plantation, Central Java. Observations and data collection were conducted on four plant populations. The observations were undertaken for three years, by observing plant traits, including pod length, pod diameter, husk thickness, cavity diameter, pod fresh weight, cocoa bean/pod fresh weight, husk fresh weight, dry weight of cocoa beans/pod, number of cocoa beans/pod, dry weight per cocoa bean. The collected data were analyzed using path and regression analysis methods. The results showed that pod diameter (X4), fresh pod weight (X5), number of cocoa beans/pod (X8), and dry weight/cocoa bean (X9) were used to form a selection index resulting the equation I = 0.0792 X4 + 0.1330 X5 + 0.0106 X8 + 0.1349 X9 furthermore will be used in the selection of cocoa trees. Ten cocoa plants from seeds having the highest general selection index were D 034, D 003, D 015, A 054, D 004, D 033, D 041, A 157, D 036, and D 025 will be selected for further evaluation.
Yield Performance of Some Promising Cocoa Clones (Theobroma cacao L.) at Dry Climate Condition Agung Wahyu Susilo; Bayu Setyawan; Indah Anita Sari
Pelita Perkebunan (a Coffee and Cocoa Research Journal) Vol 36 No 1 (2020)
Publisher : Indonesian Coffee and Cocoa Research Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/iccri.jur.pelitaperkebunan.v36i1.372

Abstract

El Nino effect as impact from global climate change needed anticipation effectively to keep cocoa production still give farmer benefit because effect of long dry season make some trouble in cocoa production. Cocoa production technology package that suitable in dry land needed for sustainable and empowerment cocoa production in marginal dry land. Principal component of this technology package is superior planting material because success of cocoa production depend on accuracy of selecting planting material. Indonesian Coffee and Cocoa Research Institute consistently carries out cocoa breeding programs aimed at overcoming problems in the field, specifically to obtain superior planting material that is tolerant to biotic and abiotic stress. This research method was carried out by observing 22 promising clones of cocoa that were planted in the Kaliwining experimental station in the 2013-2017 observation period, each clone planted in three blocks. The observed variables included estimation of production, resistance to VSD, helopeltis, and pod rot. Based on multivariate analysis, it was found that ICCRI 09 had a stable production performance from 2013 - 2017 while the promising clone of KW 641 had a special adaptation to dry conditions. Both of these clones have the potential to be developed as drought tolerant planting material to overcome the impact of climate change on cocoa production. The observation results of pest and disease attacks obtained a pattern that the clones that have tolerance to drought have good resistance to VSD.
Branching angles of several cocoa genotypes and their effect on determining optimum plant spacing Bayu Setyawan; Indah Anita-Sari; Fatrezza Ihsan; Heksan Panua
Pelita Perkebunan (a Coffee and Cocoa Research Journal) Vol 37 No 3 (2021)
Publisher : Indonesian Coffee and Cocoa Research Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/iccri.jur.pelitaperkebunan.v37i3.473

Abstract

Identification of the type of branching architecture will be one for the considerations in determining specific spacing recommendations for cocoa plantation. The research was conducted at Kaliwining Experimental Station, Indonesian Coffee and Cocoa Research Institute. The aim of this study was to investigate of branching angle characteristics of cocoa clones that can be used in determining planting space in cocoa farms. This research usied a completely randomized block design (RCBD) consisting of 21 genotypes as treatments. Each treatment was repeated three times and each replication consisted of three sample plants. Parametersobserved were branch angle and the type of branching. Branch angle is the angle formed by the outermost primary branch and was measured using a protractor. The results showed that each genotype had a different angle on the primary branch, while the secondary and tertiary branch angles did not shown any significantdifference. The results of the analysis showed that of the 21 genotypes tested, ICCRI 03, BAL 209, and KW 411 showed horizontal branching type; Sulawesi 1 and Sulawesi 3 showed vertical branching type, while the other 16 genotypes had intermediate branching types. Cocoa clones with a vertical branching type can be planted in denser spacing compared to cocoa clones with a horizontal branching type. The population per hectare of clones with vertical branching type can be increased 3 to 4 times when compared to clones with horizontal branching type.
Co-Authors Agung Wahyu Susilo Fatrezza Ihsan Heksan Panua Indah Anita Sari Indah Anita-Sari Marcelinus A.S. Adhiwibawa Suyadi Mitrowihardjo Taryono .