Judul: Perbandingan Keragaman Morfologi Pisang Kepok Unti Sayang (Musa balbisiana) Hasil Subkultur 1 Sampai 6
Abstrak: This experiment was aimed to evaluate sub-culture level of tissue culture propagation of kepok Unti Sayang banana that meet quality standard of seedling effective cost. This experiment was performed with the Complete Random Design with 6 levels and unequal repetitions, in which the mother plant was the control. The data resulted from this experiment was divided into two types: differences among sub-cultures and the ones between two populations of male flowers. The F-test was used to make intra sub-culture comparison, and proceeded by the DMRT at 5 % when the result was significantly different. The T-student test was used to compare two different populations of the male flowers. The differences among sub-cultures indicate that somaclonal variations had been occured by the existance of male flowers in the 4th and 6th sub-culture. The productions of kepok Unti Sayang were also declined by the increasing frequency of sub-cultures. The differences between two populations of male flowers showed that the population had male flowers got a higher variation than the population which didn’t have male flowers. The population that didn’t have male flowers got no rachis and bracts.
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Judul: Pengaruh Keanekaragaman Genetik Terhadap Keberhasilan Embriogenesis Somatik Beberapa Kultivar Pisang (Musa spp.) Indonesia
Abstrak: Usaha untuk mendapatkan kultivar tanaman pisang komersiil dan bibit tanaman pisang dalam jumlah yang banyak, bebas hama, penyakit serta memiliki pertumbuhan yang seragam bila secara han. dilakukan secara persilangan dan konvensional sering mengalami beberapa Salah satunya disebabkan sifat tanaman perbanyakan permasala pisang yang partenokarpi dan sterilitas bunganya yang cukup tinggi. Penelitian ploidi ini bertujuan untuk mengetahui beberapa kultivar pisang dengan menghitung kromosomnya; kultivar karakter untuk mengetahui hubungan kekerabatan pisang tersebut dengan melihat nilai tingkat jumlah antar skor morfologi, pola pita isozim, dan tingkat ploidi masing-masing kultivar pisang yang diamati. Tujuan lainnya adalah untuk mengetahui tingkat keberhasilan embriogenesis somatik. Bahan tanaman pisang yang digunakan adalah 13 var koleksi kebun plasma nutfah pisang Diperta kulti- Yogyakarta dan satu kultivar koleksi dari Badan Pengkajian dan Pener- apan Teknologi (BPPT). Cara kerja yang dilakukan pengamatan tingkat ploidi, analisis isozim, meliputi pengamatan kultur diperoleh in vitro dan pengamatan histologi dari hasil pada media CHP, kemudian dilanjutkan yang dengan perlakuan "scalping" yang diikuti kultur pada media cair. Pengamatan menghitung diamati yaitu: Hijau, tingkat ploidi dilakukan dengan jumlah kromosom. Dari 14 kultivar pisang diketahui 7 kultivar diantaranya adalah Koja Klutuk Pretel, Has Raja, Penjalin, Rejang, Ambon Hijau Klutuk Susu dan Klutuk Wulung. Sedangkan 7 kultivar lainnya adalah triploid, yaitu: Cavendish, Kasman, Raja Nangka, Triolin, Awak, Kepok Ungu dan Tanduk Hijau…dst
Keyword: Keanekaragaman Genetik, Kultivar Pisang, Tanaman Pisang, Teknik Kultur Jaringan, Analisis Isozim

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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