<p><em>Tea (</em>Camellia sinensis<em> (L.) O. Kuntze) is a cross-pollinated plant that has self-incompatible character. Assembly of superior clones through artificial pollination requires information of genetic relationships between accessions as a reference for parental lines selection. The study was aimed to determine the genetic diversity and relationships of 49 tea clones based on leaf morphology and yield components. The research was conducted at Pasir Sarongge experimental garden, Cianjur, West Java, from April to November 2015. The observed morphological characters were leaf length and width, leaf area, leaf angle, number of vein leaf, and internode between first and second leaves. Meanwhile, yield components were pecco number, pecco weight (p+3), banji bud number, banji bud weigth (b+1), and yield. The data were then used for descriptive analysis and grouping using UPGMA method based on dissimilarity matrix by XL-STAT software version 2009. The research showed that 49 clones observed here have variability on yield, leaf area, number of banji bud, and pecco number with coefficient of diversity 27.77%–51.83%. On the other hand, result of cluster analysis divided tea clones into four groups. The first group consisted of 34 clones with morphological characteristics similar to sinensis type (narrow leaves and low productivity). Group II comprised 12 clones with morphological characteristics (wide leaf) and productivity (high) similar to assamica type. Group III and IV, each contained one clone, and have similarity to assamica. The most far genetic relationships was found between group I and II (55.59%), while the closest one observed between group III and IV (5.76%).</em></p>
Pemangkasan pada tanaman teh yang dilakukan di kebun teh produktif menyebabkan sebagian besar atau secara keseluruhan organ fotosintesis tanaman hilang dan diperlukan waktu sekitar 2-3 bulan utuk tumbuh kembali. Pemangkasan dilakukan dengan jenis dan tinggi pangkasan yang bervariasi. Penambahan sitokinin benzil amino purine (BAP) dan giberelin (GA) diharapkan dapat mempercepat pertumbuhan pucuk setelah dipangkas. Tujuan penelitian adalah mempelajari pengaruh pemangkasan serta aplikasi BAP dan GA terhadap pertumbuhan dan hasil pucuk teh. Percobaan dilaksanakan kebun percobaan Pusat Penelitian Teh dan Kina Gambung bulan Agustus 2017-Oktober 2018 menggunakan rancangan split-split plot terdiri dari jenis pemangkasan (pemangkasan bersih dan pemangkasan ajir) sebagai petak utama, tinggi pangkasan sebagai anak petak (40 cm, 50 cm, dan 60 cm), aplikasi BAP dan GA sebagai anak-anak petak (0 ppm, 60 ppm BAP, 50 ppm GA, 60 ppm BAP+ 50 ppm GA). Hasil penelitian menunjukkan bahwa pemangkasan bersih dan 60 ppm BAP + 50 ppm GA menghasilkan pertumbuhan terbaik pada tinggi tunas. Tinggi pangkasan 60 cm dan 60 ppm BAP menunjukkan indeks klorofil daun tertinggi bulan ke-3 sebesar 91.58 (lebih tinggi daripada hasil penelitian sebelumnya yaitu 62.5-75.28), sedangkan tinggi pangkasan 60 cm dan 60 ppm BAP + 50 ppm GA memberikan bobot basah pucuk per perdu tertinggi pada pemetikan produksi. Secara tunggal, tinggi pangkasan 50 cm menurunkan jumlah pucuk burung serta 50 ppm GA mempersingkat lamanya masa dormansi pucuk menjadi 22 hari. Kata kunci: dormansi pucuk, pucuk burung, teh produktif
ABSTRAKPerbanyakan tanaman teh dengan menggunakan setek satu daun saat ini merupakan cara yang umum untuk memenuhi kebutuhan bahan tanaman dalam jumlah yang banyak dengan waktu yang singkat. Salah satu syarat dalam perakitan klon teh unggul baru adalah kemudahan klon tersebut untuk diperbanyak secara vegetatif. Hal ini dikarenakan klon yang mudah diperbanyak secara vegetatif lebih disukai oleh para pekebun. Salah satu pengujian yang harus dilakukan dalam proses pemuliaan tanaman teh adalah uji perbanyakan vegetatif pada kandidat klon unggul baru. Penelitian ini bertujuan untuk mengetahui variabilitas kemampuan pertumbuhan dan beberapa komponen pertumbuhan benih setek dalam uji perbanyakan vegetatif. Penelitian dilaksanakan di Persemaian Pemuliaan Kebun Percobaan Pusat Penelitian Teh dan Kina Gambung. Percobaan menggunakan Rancangan Acak Kelompok (RAK) dengan 19 klon sebagai perlakuan yang diulang tiga kali, setiap perlakuan ditanam 52 benih setek. Hasil penelitian menunjukkan bahwa hampir seluruh variabilitas geneti k pada karakter yang diamati tergolong dalam kategori luas, kecuali untuk karakter panjang akar, dan berat kering akar. Variabilitas fenotipik menunjukkan bahwa hampir seluruh karakter yang diamati tergolong dalam kategori luas, kecuali berat kering akar. Kata kunci: Klon teh, Perbanyakan vegetatif, Persilangan ABSTRACTCurrently, propagation of tea plant using one leaf is a common way to fulfil the need of plant material in large quantity also short in time. One of requirements in assembling new superior tea clone is the easy of clone to be propagated vegetatively. Clone which is easy to propagate in vegetative way is apt more by the gardeners. One required test on tea plant breeding process is vegetative propagation test of new superior clone candidates. This research aimed to determine variability of growth ability and several growth components of cutting seed in vegetative propagation. The research was carried out in Breeding Nursery, Experimental Field of Tea and Cinchona Research Institute Gambung. The trial was set in Randomized Block Design (RBD) with 19 clones as the treatment which was repeated three times, each treatment consisted of 52 cutting seeds. The result showed that almost all genetic
Catechins are one of the secondary metabolites contained in tea leaves. Cultivation practices such as pruning affect the shoot production and quality of tea yield. The use of plant growth regulators is a new breakthrough in tea plant engineering. This research aims to determine the interaction effect of type, height of pruning, and concentration of Benzil Amino Purine (BAP) and Gibberellin (GA) concentrations on tea plants' growth and catechin content after pruning. The experiment was conducted at Tea and Cinchona Research Centre Gambung in June 2018 until October 2018, with a split-plot design consisted of three factors as followed: main factor (a) type of pruning (clean and lung pruning); subfactor (b) pruning height (40 cm, 50 cm, and 60 cm); sub-sub factor (h) plant growth regulator (0 ppm, 60 ppm BAP, 50 ppm GA, 60 ppm BAP + 50 ppm GA). The result showed that 60 cm pruning and 60 ppm BAP in the third month after pruning significantly affected the chlorophyll content index (91,58I cci). There was an interaction between the pruning height of 60 cm and 50 ppm GA on fresh shoots weight per bush on the fourth plucking. Based on the response curve, at clean pruning, the optimum value at pruning height of 51.5 cm and 66,63 ppm BAP contributes to the catechin content of 1.88% while at lung pruning, the minimum value pruning height of 50.73 cm and 7.238 ppm with catechin content of 0.776%.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.