Judul: Evaluasi Faktor-faktor yang Memengaruhi Berat Tebu per Hektar Menggunakan Korelasi Genetik dan Analisis Jalur.
Abstrak: Sebagai komoditas utama sumber bahan pemanis, pemuliaan tebu dilakukan untuk memperoleh hasil produksi yang optimal yang ditandai dengan besarnya hasil berat tebu per hektar. Penelitian ini bertujuan untuk menentukan faktor-faktor agronomi yang memengaruhi berat tebu per hektar menggunakan korelasi genetik dan analisis jalur. Selain itu, penelitian ini juga bertujuan untuk menduga nilai heritabilitas karakter-karakter agronomi sebagai dasar penentuan karakter dengan daya waris tinggi. Penelitian ini menggunakan data hasil percobaan multilokasi tanaman tebu Balai Tanaman Pemanis dan Serat (Balittas) dengan rancangan acak kelompok lengkap (RAKL) dengan faktor klon dan kondisi lahan. Klon dan kelompok diasumsikan sebagai faktor acak sedangkan kondisi lahan atau lokasi diasumsikan tetap. Hasil penelitian menunjukkan bahwa karakter jumlah ruas, lebar daun, panjang daun, tinggi batang, dan berat tebu per hektar mempunyai keragaman genetik yang tinggi. Berat tebu per hektar mempunyai korelasi genetik yang tinggi dengan tinggi batang, berat tajuk, dan diameter. Berdasarkan analisis jalur, karakter tinggi batang, diameter, berat tajuk, panjang ruas, dan lebar daun dapat dijadikan kandidat acuan dalam proses seleksi klon tebu guna mendapatkan berat tebu perhektar yang tinggi. Berdasarkan hasil nilai heritabilitas, tinggi batang merupakan satu-satunya karakter yang akan digunakan sebagai acuan karena mempunyai kemampuan yang tinggi untuk mewariskan sifat kepada keturunannya.
Keyword: analisis jalur, heritabilitas, korelasi genetik, multilokasi

Judul: Keragaman Genetik, Heritabilitas, Dan Analisis Koefisien Lintasan Pada Plasma Nutfah Gandum (Triticum Aestivum L.) Koleksi Balitbiogen
Abstrak: The aims of this experiment are to study the geneUc variation, heritability of the wlleat germplesm collection and cotrelation among chafllctelS using pathcoefficient analysis. This experiment was conducted at Rice Research Station in Kuningan, West Java on June until October 2002 using RandOmized Completely Block Design (RCBD) with three replications. each of the twenty-seven genotypes of wheat was planted on four rows with 3 m lenght. The interrow and interplant spacing were 25 em and 10 em, respectivity. Deta obtained from the twenty-seven genotypes were subjected to variance analysis and the heritability of the traits _mated by component of variance method. Correlation coefflcients were computed according to the formula of Goulden (1959). Direct and indirect path coefflcients were calculated as described by Dewey and Lu (1959). High geneUc varianon displayed by l00-grain weight, numberofUllelS per plant and number of spikes per plant The esUmation of heritability ranged from 0 to 94.58%. The days to nower, plant height, spike length, number of greins per spike, and l00-grain weight were uncotrelated with grain yield per plant. In the other hand, the days to harvest, number of tillelS per plant, number of Spikes per plant, dry spikes weight, and harvest spikes weight were positively and significanty correlated with grain yield per plant. The number of graints per plant, number of spikes per plant, number of grains per spike, and l00-grein weight each had a posiwe direct effect on grain yield per plant. The indireci effect on grain yield per plant via number of tillers and number of Spikes (productive tillers ) per plant showed by days to harvest, dry Spikes weight, and harvest Spikes weight. The number of productive tillers per plant was a good criteria to be used towards improvement of grain yield.
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Judul: Elektrodeposisi Film Tipis Semikonduktor Cu2ZnSnS4 (CZTS) pada Substrat Kaca ITO
Abstrak: Semiconductor Cu2ZnSnS4 (CZTS) thin film that can be used as absorber layers on solar cell module was made via electrodeposition method. CZTS thin film was electrodeposited on the surface of a silicate glass coated with a thin layer of indium tin oxide (ITO). Deposition process was done using potentiostatic mode at room temperature with a potential of 1.05 V for 30, 45, and 60 minutes, followed with annealing the film at 2 different temperatures, 500 ºC using furnace and 180 ºC using hot plate, both treatments for 45 minutes in N2/H2S atmosphere. The X-ray difractograms were analyzed using Match 2 program and showed that the CZTS thin films had kesterit crystalline structure, with a low percentage of CZTS phase. The thin film also contained secondary phases such as Cu2S, ZnS, and SnS. The obtained CZTS thin films had a thickness between 1.039 and 1.676 μm. Absorption study showed that the band gap energy of CZTS thin films which was annealed using furnace ranged from 1.50 to 1.52 eV, whereas that annealed using the hot plate was not observed. The band gap energy value showed that CZTS thin films can be used as sunlight absorber layers on solar cell. The formation of CZTS crystal film on this investigation was effectively performed using furnace annealing process at a temperature of 500 ºC with deposition time of 45 minutes.
Keyword: Thin film, Electrodeposition, Cu2ZnSnS4