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All Journal Pelita Perkebunan Research Journal of Life Science
Indah Anita Sari
Indonesian Coffee and Cocoa Research Institute
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Medicine & Pharmacology

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Journal : Pelita Perkebunan

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Flush characteristics of several cocoa genotypes different in resistant to vascular streak dieback Sari, Indah Anita; Setyawan, Bayu; Wahyu Susilo, Agung; Fitri Isnaini, Nurhadini; Paputpungan, Samsul; Nur’aini, Febrilia; Solecha Ruseani, Nur
Pelita Perkebunan (a Coffee and Cocoa Research Journal) Vol. 38 No. 2 (2022)
Publisher : Indonesian Coffee and Cocoa Research Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/iccri.jur.pelitaperkebunan.v38i2.518

Abstract

Vascular streak dieback (VSD) is one of the main diseases on cocoa that can cause a decrease in production and even death on susceptible plants. The use of selection criteria is very important in the selection process at the seedling phase, young plants and even mature plants in order to support the breeding process of resistant varieties. The aim of the study was to determine the characteristics of flush including flush color, stomata characters and duration of flush color change to green or towards mature leaves as one of the selection indicators for VSD resistance in cocoa. The research was conducted at Kaliwining Experimental Station, Indonesian Coffee and Cocoa Research Institute, Jember, Indonesia. Study of flush color and stomata characters was conducted using a randomized complete block design consisting of four cocoa genotypes with different levels of resistance, classified as resistant to VSD disease (Sulawesi 1, PNT 16) and as susceptible (BCL and BL 50). Each clone was repeated three times and each replication consisted of three plant samples. Flush color duration study was carried out on six cocoa genotypes as treatments, three genotypes with resistant to VSD (PNT 16, Scavina 12, Sulawesi 1) and three genotypes as susceptible to VSD (BL 50, BCL, Criollo 22). Each treatment was repeated three times and each replication consisted of three plant samples. The results showed that the resistant genotypes showed a tendency to have lower chlorophyll and anthocyanin content than the susceptible ones. The stomata character in the resistant genotypes was not different than the susceptible ones, however, the resistant genotype showed that the stomata density at flush tended to be lower. The duration of flush color change to mature leaves (green) in resistant genotypes was significantly faster than susceptible genotypes.
Insect Community Status in Different Field Conditions and Clones in Kaliwining Cocoa Experimental Station, East Java, Indonesia: Sisko Budianto, Wiwin Windriyanti, Sri Wiyatiningsih, Indah Anitasari Budianto, Sisko; Windriyanti, Wiwin; Wiyatiningsih, Sri; Sari, Indah Anita
Pelita Perkebunan (a Coffee and Cocoa Research Journal) Vol. 41 No. 2 (2025)
Publisher : Indonesian Coffee and Cocoa Research Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/iccri.jur.pelitaperkebunan.v41i2.629

Abstract

Insect communities are vital to the ecological and economic success of cocoa agroforestry systems, providing essential functions such in pollination, pest control, and nutrient cycling. Their presence and performance are shaped by field structure, clone genetics, habitat complexity, and agricultural practices. This research was conducted at the Experimental Station of the Indonesian Coffee and Cocoa Research Institute in Jember, East Java, which focused on two distinct types of cocoa fields (differences in planting years, plant density, and shade trees) and clones (clone ICCRI03, ICCRI09, and MCC02). The research highlights are the role of field conditions and genetic factors in shaping insect diversity and abundance. The trapping method used a yellow trap, and field conditions included plant height, canopy width, and leaf litter amount, which were measured. The observation revealed 35 insect morphospecies from 30 families and eight non- insect morphospecies, emphasizing the functional diversity of these communities. Field conditions and clones did not have a significant effect on insect abundance and diversity. Field conditions, including plant height, canopy width, and leaf litter amount, did not show a strong correlation with the abundance of insects. Field with more shade trees and vegetation, had a greater abundance of insects, notably predators and decomposers. MCC02 favored pollinator populations, ICCRI03 boosted predators and parasitoids, and ICCRI09 increased overall diversity. However, pollinators and omnivores showed minimal variety across fields and clones. Shannon diversity index values (H’ = 1.59-1.75) suggested moderate biodiversity with uneven species distribution. The study underscores the importance of main- taining habitat complexity, optimizing field management, and strategic clone selection to enhance ecosystem services like pollination and pest control while fostering biodiversity.
Co-Authors Agung Wahyu Susilo Agung Wahyu Susilo Aini, Febrilia Nur Aris Budiman Bayu Setyawan, Bayu Daniel Happy Putra Fitri Isnaini, Nurhadini Luqman Qurata Aini Nur’aini, Febrilia Paputpungan, Samsul Sisko Budianto Solecha Ruseani, Nur Sri Wiyatiningsih Syibli, Muhammad Akhi Windriyanti, Wiwin