Judul: Tolerance of Siratro Plants (Macroptilium atropurpureum) to Acidic Soil Conditions through Tissue Culture Technique
Abstrak: Siratro merupakan leguminosa yang dapat tumbuh pada daerah tropis dan subtropis, serta tahan terhadap kekeringan. Penelitian ini bertujuan untuk mengetahui tingkat toleransi tanaman siratro (Macroptilium atropurpureum) terhadap kondisi masam dengan level yang berbeda melalui teknik kultur jaringan. Penelitian ini menggunakan rancangan acak lengkap (RAL) dengan 6 perlakuan penambahan AlCl3 dengan ulangan tidak sama (P0 (0 ppm AlCl3), P1 (100 ppm AlCl3), P2 (200 ppm AlCl3), P3 (300 ppm AlCl3), P4 (400 ppm AlCl3), dan P5 (500 ppm AlCl3)). Data dianalisis menggunakan analisis deskriptif, analisis korelasi, dan analisis varian (ANOVA), jika ada signifikasi akan diuji lanjut menggunakan uji Duncan. Peubah yang diamati adalah pertambahan tinggi tanaman, persentase kerontokan daun, penyusutan media, pertambahan bobot tanaman, warna daun, jumlah daun, perubahan pH media, dan persentase kontaminasi. Hasil analisis ragam terhadap parameter pertambahan tinggi tanaman, persentase kerontokan daun, penyusutan media, dan pertambahan bobot tanaman berbeda nyata (P<0,05). Tingkat toleransi tanaman siratro (Macroptilium atropurpureum) pada pemberian aluminium sampai level 100 ppm (pH 4,91). Kata kunci : aluminium, asam, pertumbuhan, pH, siratro, tanaman, toleransi ABSTRACT LISNI TASYA. Tolerance of Siratro Plants (Macroptilium atropurpureum) to Acidic Soil Conditions through Tissue Culture Technique. Supervised by PANCA DEWI MANU HARA KARTI and DIDID DIAPARI. Siratro is a legume that can grow in tropical and subtropical areas, and is resistant of drought. The experiment was aimed to determine the tolerance level of siratro (Macroptilium atropurpureum) plants to acidic soil condition with different levels through tissue culture techniques. This study was used a complete randomized design with 6 treatments with the addition of AlCl3 (P0 (0 ppm AlCl3), P1 (100 ppm AlCl3), P2 (200 ppm AlCl3), P3 (300 ppm AlCl3), P4 (400 ppm AlCl3), dan P5 (500 ppm AlCl3)) with different number of replications. Data were analyzed using descriptive analysis, correlation analysis, and analysis of variance (ANOVA), if there was significant difference data were further analyzed using using Duncan test. The variables observed were plant height increasing, percentage of leaf shedding, media depreciation, increased of plant weight, leaf color, number of leaf, acidy media changes, and percentage of contamination. This treatment significantly (P<0,05) influences plant height increasing, percentage of leaf shedding, media depreciation, and increased of plant weight. The tolerance level of siratro (Macroptilium atropurpureum) on giving aluminum level until 100 ppm (pH 4,91). Keywords : acids, aluminum, growth, pH, plants, siratro, tolerance, Siratro merupakan leguminosa yang dapat tumbuh pada daerah tropis dan subtropis, serta tahan terhadap kekeringan. Penelitian ini bertujuan untuk mengetahui tingkat toleransi tanaman siratro (Macroptilium atropurpureum) terhadap kondisi masam dengan level yang berbeda melalui teknik kultur jaringan. Penelitian ini menggunakan rancangan acak lengkap (RAL) dengan 6 perlakuan penambahan AlCl3 dengan ulangan tidak sama (P0 (0 ppm AlCl3), P1 (100 ppm AlCl3), P2 (200 ppm AlCl3), P3 (300 ppm AlCl3), P4 (400 ppm AlCl3), dan P5 (500 ppm AlCl3)). Data dianalisis menggunakan analisis deskriptif, analisis korelasi, dan analisis varian (ANOVA), jika ada signifikasi akan diuji lanjut menggunakan uji Duncan. Peubah yang diamati adalah pertambahan tinggi tanaman, persentase kerontokan daun, penyusutan media, pertambahan bobot tanaman, warna daun, jumlah daun, perubahan pH media, dan persentase kontaminasi. Hasil analisis ragam terhadap parameter pertambahan tinggi
Keyword: aluminium, asam, pertumbuhan, pH, siratro, toleransi

Judul: Growth Response of Butterfly Pea (Clitoria ternatea) to The Effectiveness of Benzyl Amino Purin (BAP) and Stress Acidity through Tissue Culture Technique.
Abstrak: Penelitian ini dilakukan untuk mendapatkan dosis BAP yang terbaik dan menganalisis tingkat toleransi masam pada tanaman kembang telang (Clitoria ternatea) terhadap cekaman masam dengan level yang berbeda melalui teknik kultur jaringan. Penelitian ini didesain menjadi 2 penelitian. Penelitian 1: Dosis terbaik BAP pada tanaman kembang telang, II: Respon tanaman kembang telang berdasarkan cekaman masam. Penelitian I didesain menggunakan rancangan acak lengkap (RAL) dengan 5 perlakuan penambahan dosis BAP yang berbeda dengan ulangan yang tidak sama, terdiri dari (P0 (0 ppm BAP), P1 (0,5 ppm), P2 (1 ppm), P3 (1,5 ppm), dan P4 (2 ppm). Penelitian II didesain menggunakan rancangan acak lengkap (RAL) dengan 6 perlakuan penambahan level AlCl3 yang berbeda dengan ulangan tidak sama, terdiri dari (P0 (0 ppm AlCl3), P1 (100 ppm AlCl3), P2 (200 ppm AlCl3), P3 (300 ppm AlCl3), P4 (400 ppm AlCl3), dan P5 (500 ppm AlCl3)). Data dianalisis menggunakan analisis deskriptif dan analisis varian (ANOVA), jika ada signifikansi akan diuji lanjut menggunakan uji Duncan. Peubah yang diamati adalah pertambahan tinggi tanaman, jumlah daun, jumlah ranting, jumlah anakan, kelayuan daun, penyusutan media, pertambahan bobot tanaman, warna daun, dan perubahan pH media. Hasil penelitian menunjukan bahwa pemberian dosis BAP 0,5 ppm berpengaruh nyata terhadap tinggi tanaman dan bobot tanaman. Level dosis pemberian BAP terbaik pada tanaman kembang telang adalah level 0,5 ppm. penambahan AlCl3 dengan level lebih dari 300 ppm berpengaruh nyata menurunkan pertumbuhan tanaman kembang telang terhadap pertambahan tinggi tanaman, perubahan pH media, jumlah ranting, jumlah anakan, kelayuan daun, bobot tanaman dan susut media, namun tidak berpengaruh nyata terhadap jumlah daun. Tingkat toleransi tanaman kembang telang terhadap cekaman masam adalah level ≤ 300 ppm (pH 3,73)., This study was conducted to get the best dose of Bap and to analized the level of tolerance butterfly pea (Clitoria ternatea) plants to stress acidity at different levels through tissue culture technique. The study was designed as 2 studies. Research I: the best BAP dose of the butterfly pea plant, II: response of butterfly pea plant based on acidity stress. Research I was designed used a complete randomized design with the the different level BAP addition with the different number of replications (P0 (0 ppm BAP), P1 (0,5 ppm), P2 (1 ppm), P3 (1,5 ppm), dan P4 (2 ppm). Research II was designed used a complete randomized design with 6 treatments with the different level of AlCl3 addition with the different number of replications (P0 (0 ppm AlCl3), P1 (100 ppm AlCl3), P2 (200 ppm AlCl3), P3 (300 ppm AlCl3), P4 (400 ppm AlCl3), dan P5 (500 ppm AlCl3)). Data were analyzed using analysis of variance (ANOVA) and if there was significant difference, data were further analyzed using Duncan’s multiple range test. The variables observed were plant height increasing, number of leaves, number of branches, number of shoots multiplication, percentage of leaf withering, media depreciation, increased of plant weight, leaf color, and acidity media changes. The results showed that adding the dose level of 0,5 ppm BAP had a significant effect of increased plant height and plant weight. The effective level of adding BAP to butterfly pea plant is level 0,5
Keyword: alumunium, BAP, butterfly pea (Clitoria ternatea), tissue culture

Judul: Hamiltonian formulation for linear waves motion in two layers fluid
Abstrak: The surface wave could be considered as a wave that separates two fluids, namely water and air. Based on this assumption, it is introduced the interfacial wave, a wave between two layers of fluid with different density. The formulation of interfacial waves motion begins with deriving the base equation of irrotational ideal fluid. Furthermore, according to irrotational fluid assumption, the base equation can be stated in velocity potential. In this derivation, the fluids domain is assumed to be restricted by rigid lid boundary conditions, both at the upper and lower limit. Therefore, the interfacial waves motion can be explained in a hamiltonian formulation. In the hamiltonian formulation, total energy is defined as the sum of kinetic and potential energy. The hamiltonian system is obtained from reduction of kinetic energy by using the Dirichlet Neumann Operator. The resulted kinetic energy equation is nonlinear. Therefore, this form is linearized by first part of the Taylor expansion. This linearization gives a dispersion relation of linear wave. Based on this dispersion relation, the phase speed of the linear wave depends on the density ratio of the two layers fluid.
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