Helfi Eka Saputra
Program Studi Pemuliaan dan Bioteknologi Tanaman, Sekolah Pascasarjana IPB Jl. Meranti Kampus IPB Darmaga, Bogor 16680, Indonesia

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Pendugaan Daya Gabung dan Heritabilitas Komponen Hasil Tomat pada Persilangan Dialel Penuh Saputra, Helfi Eka; Syukur, Muhamad; Aisyah, Syarifah Iis
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 42, No 3 (2014): JURNAL AGRONOMI INDONESIA
Publisher : Bogor Agricultural University

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Abstract

ABSTRACT Hybridization is one of plant breeding techniques to obtain high yielding varieties. Combining ability and heritability information are needed for evaluating hybrids’ performance. The objective of this research was to estimate the combining ability and heritability of tomato yield component traits in a full dialel crosses at lowland. The experiment was conducted  at Leuwikopo Experimental Station IPB, Darmaga, Bogor from March until August 2013. The random model of Griffing method I was used to estimate general combining ability, specific combining ability and heritability. The experiment used a randomized complete block design (RCBD) with three replications. IPBT1, IPBT13 and IPBT84 had a good general combining ability (GCA) for weight per fruit, fruit size and weight of fruit per plant. IPBT30 and IPBT33 had a good general combining ability (GCA) for number of fruits per plant. IPBT13 × IPBT1 hybrid showed a high and positive specific combining ability (SCA) values for all characters, therefore it can be used for hybrid variety. The highest broad and narrow sense heritability was obtained for fruit size, meanwhile the lowest was obtained for weight of fruit per plant. Weight per fruit, fruit size and weight of fruit per plant characters were influenced by additive and dominant gene effects, whereas number of fruit  per plant was influenced by additive gene effects.      Keywords: additive, dominant, GCA, SCA, heritability
SISTEM SIMULASI SELEKSI POPULASI BERSEGREGASI F2 TOMAT UNTUK MENDAPATKAN GALUR UNGGULAN DENGAN PENENTUAN KARAKTER SELEKSI DAN PERHITUNGAN INDEKS SELEKSI (Studi Kasus : Laboratorium Agronomi FP-UNIB) Okiarlis, Rachmat Ade; Johar, Asahar; Saputra, Helfi Eka
Rekursif : Jurnal Informatika Volume 4 Nomor 3 September 2016
Publisher : Rekursif : Jurnal Informatika

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Abstrak : Seleksi populasi bersegregasi F2 tomat adalah penyeleksian yang dilakukan pemulia untuk mendapatkan varietas baru tanaman tomat unggulan. Penelitian ini bertujuan untuk membangun suatu sistem simulasi yang dapat digunakan oleh pemulia dalam menyeleksi populasi bersegregasi F2 tomat; menanamkan pola penyeleksian populasi F2 tomat ke dalam sistem simulasi agar sistem simulasi dapat menggambarkan proses penyeleksian dan mengambil suatu kesimpulan layaknya pola tersebut. Sistem ini dibangun dengan menggunakan bahasa pemrograman Java ?dengan IDE Netbeans 8.1. Metode pengembangan sistem yang digunakan untuk membangun aplikasi ini adalah model waterfall dan Unified Modeling Language (UML) sebagai perancangan sistem. Pengujian yang digunakan adalah pengujian white box dengan 100% ?independent path berhasil dijalankan dan pengujian black box ?dengan 95,71% skenario pengujian berhasil. Hasil akhir dari penelitian ini adalah terciptanya sebuah sistem simulasi seleksi populasi F2 tomat yang sesuai dengan hasil perhitungan manual dibuktikan dengan akurasi data sebesar 100%.Kata kunci : Seleksi Populasi F2 Tomat, Sistem Simulasi, waterfall, UML, white box, black box.
Modification of Growing Medium for Container Melon (Cucumis melo L.) Production Using Goat Manure and Dolomite Handajaningsih, Merakati; Hasanudin, Hasanudin; Saputra, Helfi Eka; Marwanto, Marwanto
International Journal on Advanced Science, Engineering and Information Technology Vol 9, No 2 (2019)
Publisher : International Journal on Advanced Science, Engineering and Information Technology

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The growth of melon plant requires soil rich in organic matter, well drainage, and soil pH  6.0 – 7.0. The adverse conditions are found on mostly red-yellow podsolic of Ultisol. The objective of this research was to evaluate the application of goat manure and dolomite on growth and yield of melon. The research was held from June until September 2015 in Kandang Limun, Bengkulu City.  Completely Randomized Design was arranged involving goat manure doses consisted of 0 kg polybag-1, 3 kg polybag-1, and 6 kg polybag-1. Another factor was the dose of dolomite consisted of 0 g polybag-1 (0 tons ha-1), 100 g polybag-1 (2 tons ha-1) and 200 g polybag-1 (4 tons ha-1). Treatments were replicated three times, each experimental unit consisted of 4 polybags of plants. The result of this research revealed no interaction between goat manure and dolomite in affecting the vegetative growth of plants. The interaction between goat manure and dolomite was found affecting  fruit weight, fruit diameter and the thickness of edible fruit part. The highest values for fruit weight, fruit diameter, and edible fruit thickness were achieved on 3 kg polybag-1 goat manure  and 200 g polybag-1 dolomite treatment, which were 725.25 g, 17.14 cm, and  2.99 cm respectively. Goat manure dose of 6 kg polybag-1 increased stem diameter (5.5 mm) and fruit sweetness (8.09 0Brix) compared to treatment without manure which was 5.43 mm and 7.31 0Brix.
CHARACTERIZATION AND SIMILARITY ANALYSIS OF 15 TOMATO GENOTYPES IN LOWLANDS BASED ON MORPHOLOGICAL CHARACTERS Saputra, Helfi Eka; Syukur, Muhammad; Aisyah, Syarifah Iis
Agrotech Journal Vol 2, No 2 (2017): Agrotech Journal (ATJ)
Publisher : Universitas Sembilanbelas November Kolaka

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Abstract

This study aimed to obtain information about the characteristics of 15 genotypes and to study a genetic similarity of each genotype that will be used for producing superior tomato varieties in lowlands. The research was conducted from March to August 2012 at the Experimental Field Leuwikopo Bogor Agricultural University, Darmaga Bogor. The experiment used The Randomized Complete Block Design (RCBD) using a single factor of genotype with three replications. Characterization and similarity analysis used the method of principal component analysis and cluster analysis. Based on principal component analysis and cluster analysis of tomato genotypes, it can be classified into three groups: group I (IPBT1, IPBT4, IPBT8, IPBT13, IPBT58, IPBT83 and IPBT84), Group II (IPBT3, IPBT23, IPBT30, IPBT33, IPBT34, IPBT53 and IPBT57) and group III (IPBT80). Characters with an influence on the genetic diversity of each component are the size of the cork layer between the scar stalk and the size of the center of the fruit in transverse slices. The genotypes with a high genetic similarity were IPBT1 and IPBT8, while IPBT30 with IPBT80 had a low genetic similarity