Judul: Yield Evaluation of M2 Generation Cayenne Pepper (Capsicum frutescens L.) M2 in Lowland
Abstrak: Cabai rawit (Capsicum frutescens L.) merupakan komoditas hortikultura yang memiliki nilai ekonomi tinggi dan biasa dikonsumsi sehari-hari oleh masyarakat Inonesia sebagai bumbu masakan, baik pada makanan rumahan maupun produk industrial. Produktivitas dan produksi C. frutescens dapat ditingkatkan melalui perakitan varietas baru, salah satunya melalui mutasi. Penelitian ini bertujuan mengevaluasi daya hasil dan keragaan karakter morfologi pada empat mutan cabai rawit yang akan dibandingkan dengan enam genotipe pembanding. Rancangan percobaan yang digunakan adalah rancangan kelompok lengkap teracak (RKLT) dengan satu faktor perlakuan berupa genotipe. Hasil dari penelitian ini menunjukkan bahwa terdapat beberapa karakter yang memiliki perbedaan yang signifikan pada genotipe yang diuji. CHM2 memiliki umur berbunga dan umur panen yang lebih cepat dibandingkan pembanding. CHM4 memiliki diameter batang lebih lebar, daging buah yang lebih tebal, dan produktivitas yang lebih tinggi dibandingkan pembanding., Cayenne pepper (Capsicum frutescens L.) is a horticultural commodity that has high economic value since consumed daily as a common spice in most Indonesian cuisine on the household menu and in industrial products as well. In order to increase productivity and production of C. frutescens, new varieties have been developed through mutation approach. This study aims to evaluate the yield and morphological characters of four selected mutants compared to six established genotypes. The experimental arranged under a single factor randomized complete block design, namely genotype. The results showed that the evaluated genotypes have significant differences for some observed characters. CHM2 has earlier flowering and harvesting time compared to control genotypes. CHM4 has a wider stem, thicker fruit flesh, and higher yield than control genotypes.
Keyword: horticulture, morphological character, new varieties

Judul: Yield Evaluation Cayenne Pepper Gamma Rays Irradiation
Abstrak: Tingkat konsumsi cabai rawit bulanan yang tetap tidak diikuti dengan produksi yang stabil sepanjang tahun, menyebabkan fluktuasi harga dan mempengaruhi inflasi nasional. Pendekatan mutasi dapat digunakan untuk mengembangkan varietas baru yang memiliki hasil yang stabil. Penelitian ini bertujuan memperoleh informasi mengenai karakter kuantitatif berupa daya hasil dan kualitatif pada tiga genotipe cabai rawit generasi M2 induksi mutasi sinar gamma yang dibandingkan dengan genotipe yang telah ditetapkan. Genotipe tersusun berdasarkan rancangan kelompok lengkap teracak (RKLT) faktor tunggal. Hasil analisis sidik ragam menunjukkan bahwa genotipe berpengaruh sangat nyata terhadap semua karakter kuantitatif dan nyata pada karakter lebar tajuk. Genotipe CHM 6 memiliki karakter daya hasil seperti bobot buah per tanaman, jumlah buah per tanaman, dan produktivitas lebih tinggi dibandingkan dengan semua genotipe uji dan beberapa pembanding. Sementara itu, genotipe CHM 7 memiliki karakter umur berbunga dan panen lebih cepat dibandingkan dengan semua genotipe uji maupun pembanding. Hasil analisis korelasi menunjukkan bahwa bobot buah per tanaman dipengaruhi oleh jumlah buah per tanaman., Flat monthly cayenne pepper consumption rate not followed by stable production along a year, causing price fluctuation and affecting national inflation. The mutation approach can be used to develop new varieties having stable yields. This study aimed to get information on quantitative and qualitative characters of three genotypes of M2 generation cayenne pepper induced by gamma-ray irradiation compared with established genotypes. The genotypes are arranged under a single factor randomized complete block design (RCBD). The results of variance analysis showed that genotype had a very significant effect on all quantitative characters and a significant effect on canopy width. Genotype CHM 6 had yield characteristics such as total fruit weight per plant, number of fruits per plant, and higher productivity than all test and comparison genotypes. Meanwhile, genotype CHM 7 had a faster flowering and harvesting age than all test and comparison genotypes. The results of the correlation analysis showed that the total fruit weight per plant was influenced by the number of fruits per plant.
Keyword: M2 generation, Yield, Quantitative character, Qualitative character

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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