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Heri Syahrian
Research Institute for Tea and Cinchona
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Pengaruh Pemangkasan dan Aplikasi Sitokinin terhadap Pertumbuhan dan Hasil Tanaman Teh (Camellia sinensis) Intan Ratna Dewi Anjarsari; Jajang Sauman Hamdani; Cucu Suherman; Tati Nurmala; Heri Syahrian
Jurnal Tanaman Industri dan Penyegar Vol 6, No 2 (2019): Jurnal Tanaman Industri dan Penyegar
Publisher : Pusat Penelitian dan Pengembangan Perkebunan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jtidp.v6n2.2019.p61-68

Abstract

Pemangkasan pada tanaman teh merupakan salah satu rekayasa ekofisiologi yang dilakukan untuk menginisiasi pertumbuhan tunas sebagai bakal pembentukan pucuk peko. Sitokinin, salah satunya benzil amino purin (BAP), merupakan zat pengatur tumbuh yang dapat diaplikasikan untuk memacu inisiasi tunas setelah pemangkasan. Tujuan penelitian adalah mengetahui pengaruh pemangkasan dan penggunaan sitokinin terhadap pertumbuhan dan hasil tanaman teh. Penelitian dilaksanakan di Kebun Percobaan Pusat Penelitian Teh dan Kina Gambung pada ketinggian 1250 m di atas permukaan laut (dpl), mulai bulan Juni sampai Agustus 2018. Penelitian menggunakan tanaman menghasilkan (TM) klon GMB 7 berumur 7 tahun. Rancangan percobaan yang digunakan adalah rancangan acak kelompok (RAK) yang terdiri dari 8 kombinasi perlakuan dengan 4 ulangan sehingga terdapat 32 unit percobaan, meliputi perlakuan pemangkasan bersih dan pemangkasan jambul/ajir, tinggi pemangkasan 40 cm dan 60 cm, serta konsentrasi zat pengatur tumbuh BAP. Peubah yang diamati adalah jumlah pucuk peko, jumlah pucuk burung, bobot segar dan kering pucuk. Hasil penelitian menunjukkan bahwa kombinasi dari jenis dan tinggi pangkasan dengan pemberian BAP berpengaruh terhadap jumlah pucuk peko dan pucuk burung pada pemetikan ke-3, namun tidak berpengaruh terhadap bobot segar dan kering pucuk. Perlakuan pemangkasan secara bersih ataupun jambul/ajir pada tinggi pangkas 60 cm dan diikuti pemberian BAP 60 ppm, merupakan perlakuan terbaik dalam menghasilkan jumlah pucuk peko  dan mengurangi jumlah pucuk burung.
The growth test of tea clones (Camellia sinensis) from cross pollination first generation clones Vitria Puspitasari Rahadi; Heri Syahrian; Bambang Sriyadi
Jurnal Penelitian Teh dan Kina Vol 19 No 2 (2016)
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/pptk.jur.jptk.v19i2.118

Abstract

Efforts to improve the productivity of tea needed new high yielding clones were obtained from the cross and easily propagated vegetatively. Preliminary testing of the clones  needs to be done to determine the growth of cuttings and rooting properties of tea clones from hybridization which are selected by potential production. This study used a Randomized Complate Block Design with three replications. The treatments consist of 14 clones from crosses and GMB 7 as clone comparison. The data is analyzed by using ANOVA and Scott Knott test with the level of 5%. The observations are intended to look at the growth of roots and shoots by dismantling seedling in polybag predetermined randomly at each observation. The results showed that the clones tested had good growth with a low mortality rate, and easily propagated vegetatively. The S / R ratio also showed shoot growth more faster than the growth of root. This character is advantageous because the most appropriate selection criteria for planting in the field.
Deep CNNBased Detection for Tea Clone Identification Ade Ramdan; Endang Suryawati; R. Budiarianto Suryo Kusumo; Hilman F. Pardede; Oka Mahendra; Rico Dahlan; Fani Fauziah; Heri Syahrian
Jurnal Elektronika dan Telekomunikasi Vol. 19 No. 2 (2019)
Publisher : National Research and Innovation Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jet.v19.45-50

Abstract

One factor affecting the quality of tea is the selection of plant material that would be planted on the field. Clonal selection is a common way to produce tea with better quality. However, as a natural cross pollination species, tea often consists of various clones or progenies of cross-pollinated process. This commonly occurs on plantations owned by smallholder farmers. To produce a consistent quality tea, the clones or progenies need to be identified. Usually, human experts distinguish the plants from leaves by visual inspection on the physical attributes of the leaves, such as the textures, the bone structures, and the colors. It is very difficult for non-experts or common farmers to do such identifications. In this, we propose a deep learning-based identification of tea clones. We apply deep convolutional neural network (CNN) to identify 3 types of tea clones of Gambung series, a series of tea clones developed at Research Institute of Tea and Cinchona. Our study indicates that the performance of the CNN systems are affected by the depth of the convolutional layers. VGGNet, a popular CNN architectures with 16 layers, achieves better accuracy compared to AlexNet, a CNN with 6 layers.
SCREENING OF INDONESIAN SINENSIS TEA CLONES (Camellia sinensis var. sinensis) FOR HIGH-QUALITY GREEN TEA: EMPHASIS ON INDONESIAN NATIONAL STANDARDS COMPLIANCE, HIGH PROTEIN, AND LOW CAFFEINE M. Khais Prayoga; Koko Dwi Sutanto; Heri Syahrian; Vitria P. Rahadi; Bariza K. Humam; Dwinita W. Utami
Gunung Djati Conference Series Vol. 66 (2026): The International Conference on Perennial Crops 2026
Publisher : UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/gdcs.v66i.3398

Abstract

Tea is one of the oldest beverages known to humanity, with green tea being among the most popular types due to its distinctive flavor and health benefits. The development of green tea is essential, both in terms of sensory quality and functional value. This study aimed to screen 35 Indonesian Sinensis tea clones to identify those with superior flavor, compliance with Indonesian National Standards (SNI), high protein content, and low caffeine levels. The research was conducted by processing fresh tea shoots into green tea, followed by quality evaluation based on SNI parameters, including moisture content, total ash content, crude fiber content, and polyphenol content, as well as analysis of protein and caffeine levels. The experiment employed a Randomized Complete Block Design (RCBD) with two replications and 35 clones as treatments. The results revealed significant variation in quality among the tested clones. Clone I.2.85 and II.2.108 was identified as the best-performing clone, meeting SNI quality standards (moisture content, total ash, crude fiber, and polyphenols), exhibiting high protein levels, low caffeine levels, and a premium flavor profile.
STABILITY AND PHENOTYPIC PERFORMANCE OF 16 TEA CLONES (Camellia sinensis var. assamica) ACROSS TWO ENVIRONMENTS DURING THE VEGETATIVE PHASE Bariza K. Humam; Heri Syahrian; Vitria P. Rahadi; M. Khais Prayoga
Gunung Djati Conference Series Vol. 66 (2026): The International Conference on Perennial Crops 2026
Publisher : UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/gdcs.v66i.3410

Abstract

Tea (Camellia sinensis var. assamica) is a vital commodity in Indonesia as a raw material for the beverage industry, making early-stage clone screening essential. This study aimed to investigate the stability of growth components and characterize the morphological phenotypic performance of selected tea clones during the vegetative phase. Conducted at the Malabar (West Java) and Semugih (Central Java) plantations from December 2025 to April 2026, the experiment utilized a Randomized Complete Block Design (RCBD) with 16 treatments (15 candidate clones and one check clone, GMB 7) in three replications. Data were analysed using combined ANOVA, Tukey's HSD test (α=5%), and Principal Component Analysis (PCA). Results revealed significant genotype-by-environment (GxE) interactions for plant height and stem diameter at 3 months after planting (MAP), with variations predominantly driven by environmental factors. Clone II.13.2 was significantly shorter than GMB 7 at 3 MAP, while the stem diameters of clones TPS 93/3, TPS 87/2, II.32.15, TPS 87/1, II.6.10, and III.22.15 showed no significant difference compared to the check. Dendrogram analysis placed GMB 7 in a distinct cluster, indicating the candidate clones possess unique vegetative characteristics. Vegetative phase useful for early selection and these potential clones warrant further evaluation for future variety release.
GROWTH AND MORPHOLOGICAL DIVERSITY OF 16 SINENSIS TEA CLONES (Camellia sinensis (L.) Kuntze var. sinensis) DURING SEEDLING PHASE Syahrul Firdaus A. L; Ida Adviany; Heri Syahrian; Vitria P. Rahadi; M. Khais Prayoga
Gunung Djati Conference Series Vol. 66 (2026): The International Conference on Perennial Crops 2026
Publisher : UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/gdcs.v66i.3417

Abstract

This study investigated the morphological diversity and population structure of 16 Sinensis tea clones (Camellia sinensis (L.) Kuntze var. sinensis) during the nursery phase to support superior variety development. The research was conducted at the Gambung Tea and Kina Research Center, West Java, using morphological and growth trait analysis. Data were analyzed using Principal Component Analysis (PCA) and Cluster Analysis. The results revealed significant morphological variation among the clones, particularly in leaf number, shoot color, and leaf blade morphology. PCA indicated that 88% of the phenotypic variation was explained by five principal components, with the number of leaves and second leaf color at the p+2 position identified as the most influential traits for clonal differentiation. Cluster analysis classified the 16 clones into two distinct kinship groups, with the second group comprising 81.25% of the tested population. These findings provide essential insights into the genetic and morphological landscape of Sinensis tea clones, establishing a robust framework for parent selection and future breeding programs aimed at producing high-quality varieties for the international green tea market.
Co-Authors Ade Ramdan Bambang Sriyadi Bariza K. Humam Cucu Suherman Dwinita W. Utami Endang Suryawati Fani Fauziah Hilman F. Pardede Ida Adviany Intan Ratna Dewi Anjarsari Jajang Sauman Hamdani Koko Dwi Sutanto M. Khais Prayoga Oka Mahendra R. Budiarianto Suryo Kusumo Rico Dahlan Syahrul Firdaus A. L Tati Nurmala Vitria P. Rahadi Vitria Puspitasari Rahadi