Indah Anita Sari
Indonesian Coffee and Cocoa Research Institute
Articles
3
Documents
Performance of Some Promising Genotypes of Fine-flavour Cocoa Selected at Penataran Estate, East Java

Pelita Perkebunan (Coffee and Cocoa Research Journal) Vol 30, No 2 (2014)
Publisher : Indonesian Coffee and Cocoa Research Institute

Show Abstract | Original Source | Check in Google Scholar | Full PDF (902.652 KB)

Abstract

Prelimanary selection at Panataran Estate, East Java found five genotypes of promising fine flavor cocoa (PNT 12, PT 16, PNT 17, PNT 18, and PNT 33B) which had high yielding potency and estimated tolerant to VSD valuation of superior characters in each accession was important as base to be developed in multilocation test. The research was conducted in Penataran Estate, PTPN XII using single plot design and consisted of five fine flavor cocoa genotypes (PNT 12, PNT 16, PNT 17, PNT 18, and PNT 33B) and two genotypes as control (DR 2 and DRC 16). Each genotype consisted 33 plants (seven years old). Yield potential, score of VSD resistance, yield quality and morphology of stomata characters were observed. The analysis results showed that PNT 16 and PNT 12 had the highest of yield potential (1.46 and 1.10 kg/plant/year) respectively. PNT 16 also showed VSD scoring value low and stable on two years observation (2012-2013). Increasing pod number in 2013 was caused by recovery of the plant from VSD attack. Number of stomata on young leaf (flush) on PNT 16, PNT 17, PNT 18, and PNT 33B was lower than DR 2. Size of stomata qualitatively was different in each number. Characters of yield quality as pod lengh, pod weight, and pod girth on five promising clones were not as significantly different compared to control. Five fine flavor cocoa promising genotypes had white bean percentage more than 80 percent. Character of dry weight per bean on five fine flavour cocoa promising genotypes showed smaller than DR 2 but were not significantly different compared to DRC 16.

Stability in Flowering, Flushing, and Fruiting Characters of 21 Potential Cacao Clones in ICCRI Collection

Pelita Perkebunan (Coffee and Cocoa Research Journal) Vol 29, No 2 (2013)
Publisher : Indonesian Coffee and Cocoa Research Institute

Show Abstract | Original Source | Check in Google Scholar | Full PDF (148.874 KB)

Abstract

Flowering character and flowering intensity can be used to estimate productivity and it is important for supporting breeding activity especially for pollination program. This research was aimed to study the stability of character of flushing, flowering and fruiting on different cocoa clones (genetic). The research was done at Kaliwining Research Station, Indonesian Coffee and Cocoa Research Institute, Jember. There were 21 clones; KW 422, KW 426, KW 427, KW 425, KW 523, KW 062, KW 084, KW 094, KW 162, KW 163, KW 165, KW 219, KW 235, KW 236, KW 265, KW 005, KW 292, KW 570, KW 514, KW 516, and KW 617. Flowering intencity, fruiting, and flushing were observed. The result of the study showed that KW 084 was the most stable clone for fruiting. KW 235 had high pod number in April. KW 426, KW 427, KW 523, and Sulawesi 2 had high pod number in March and June. KW 219 and KW 516 had the lowest pod number. Low pod number did not occur in March until June. Flowering and flushing on all genotypes showed the stability value with IPCA value nearly zero. KW 094 showed high flowering intensity in October. High flushing intensity occurred in January and July, the lower one in April and August. Key words: Stability analysis, flushing, flowering, fruiting, cocoa clones

Relationship between the shoot characteristics and plant resistance to vascular-streak dieback on cocoa

Pelita Perkebunan (Coffee and Cocoa Research Journal) Vol 30, No 3 (2014)
Publisher : Indonesian Coffee and Cocoa Research Institute

Show Abstract | Original Source | Check in Google Scholar | Full PDF (661.35 KB)

Abstract

Vascular-streak dieback (Oncobasidium theobromae) is a serious disease on cocoa damaging the vegetative tissue especially on the branches and leaves. This research was aimed to identify the relationship between characteristics of sprouting ability and VSD resistance to confirm the response of cocoa to pruning treatment on VSD control and developing criteria for selection. Trial was carried out at Kaliwining Experimental Station of ICCRI, a VSD-endemic area by using 668 plants of hybrid populayion which were derivated from intercrossing among seven clones performing different response to VSD. The resistance was evaluated by scoring the plant damage with the scale of 0-6 on drought season in the year of 2009 and 2011. The characteristics of sprouting ability was assessed by recording the pruned trees for the variables of the number of re-growth shoot, shoot height, number of new shoot per pruned branches, shoot diameter and number of leaves per shoot. It was analyzed that the variables of the number of shoot per pruned branches, shoot diameter, shoot height and number of leaves per shoot were not significantly correlated to the score of VSD damage. Grouping of the resistance also performed similar results whereas mean of the sprouting variables were not different among group but the percentage of sprouted branches tend to be higher with the higher of the resistance (lower score). This result confirmed any mechanism of tolerance on VSD resistance by accelerating shoot rejuvenation on resistant plant. Key words : vascular-streak diaback, cocoa, resistance, characteristics of sprouting