Judul: Evaluation of Agronomic Character and  Potential of Bean Sprouts of Several IPB Mung Bean Lines IPB in Dry Land and  Rice Fields
Abstrak: Kacang hijau (Vigna radiata L.) merupakan tanaman legum urutan ketiga terpenting di Indonesia. Kecambah kacang hijau (taoge) memiliki protein tinggi. Penelitian ini bertujuan mengevaluasi karakter agronomi dan potensi taoge galur kacang hijau IPB yang ditanam di lahan kering dan lahan sawah serta mempelajari pengaruh faktor interaksi genotipe dan lingkungan terhadap karakter agronomi dan potensi taoge. Penelitian dilaksanakan pada bulan November 2023 sampai Februari 2024 di Kebun Percobaan Leuwikopo, Kebun Percobaan Sawah Baru IPB dan Laboratorium Pemuliaan Tanaman, Departemen Agronomi dan Hortikultura. Penelitian ini menguji 12 galur kacang hijau IPB dan dua varietas nasional (Vima 5 dan Vimil 1), menggunakan rancangan kelompok lengkap teracak pola tersarang dengan dua faktor, faktor pertama galur kacang hijau dan faktor kedua lingkungan (lahan kering dan sawah). Masing-masing faktor terdiri atas tiga ulangan sehingga terdapat 84 satuan percobaan. Hasil penelitian menunjukkan karakter yang memiliki ragam galat tidak berbeda nyata yaitu panjang infloresens, bobot 100 butir biji, bobot basah per taoge, dan bobot basah taoge per 100 g biji. Lingkungan penanaman kacang hijau yaitu lahan kering dan sawah tidak berbeda nyata pada karakter panjang infloresens dan bobot basah per taoge. Interaksi perlakuan genotipe dan lingkungan penanaman berbeda nyata pada karakter bobot 100 butir biji, bobot basah per taoge, bobot basah total taoge per 100 g biji dan tidak berbeda nyata pada karakter panjang infloresens. Genotipe F9-Lom2/129-42 dan F9-VR10/V1-29 memiliki keragaan karakter komponen hasil yang lebih baik dari genotipe lain. Genotipe F9-VR480B/-82 memiliki keragaan potensi produksi taoge yang lebih baik dari genotipe lain., Mung bean (Vigna radiata L.) are the third most important legume crop in Indonesia. Mung bean sprouts have high protein. This research aimed to evaluate the agronomic characteristics and potential of sprouts of IPB mung bean lines planted in dry land and rice fields and study the influence of genotype and environmental interaction factors on the agronomic character and potential of bean sprouts. The research was conducted from November 2023 to February 2024 at the Leuwikopo Experimental Garden, Sawah Baru IPB Experimental Garden and the Plant Breeding Laboratory, Department of Agronomy and Horticulture. This study tested 12 IPB mung bean lines and two national varieties (Vima 5 and Vimil 1), using a randomized complete block design with a nested pattern with two factors, the first factor being mung bean lines and the second factor environment (dry land and rice field). Each factor consists of three replications so there are 84 experimental units. The results showed that the characters that had various errors were not significantly different are inflorescence length, weight of 100 seeds, wet weight per bean sprout, and wet weight of bean sprouts per 100 g of seed. The mung bean planting environment (dry land and rice fields) did not have a significant difference on the characteristics of inflorescence length and wet weight per bean sprout. The interaction of genotype treatment and planting environment had a significant difference on the weight of 100 seeds, wet weight per bean sprout, total wet weight of bean sprouts per 100 g of seeds and had no significant difference on the character of inflorescence length. The genotypes F9-Lom2/129-42 and F9-VR10/V1-29
Keyword: korelasi, tersarang, kluster, potensi hasil

Judul: Evaluation of Agronomic Character and Harvesting  Period of F5 Line of Mung Bean (Vigna radiata L.  Wilczek)
Abstrak: Kacang hijau sebagai tanaman pangan legume ketiga terpenting di Indonesia memiliki produktivitas yang masih tergolong rendah. Penelitian ini bertujuan mengevaluasi beberapa galur kacang hijau IPB untuk karakter agronomi, periode panen, dan potensi produksinya. Penelitian ini dilaksanakan di Kebun Percobaan Leuwikopo pada bulan Maret sampai Mei 2022. Rancangan penelitian ini adalah rancangan kelompok lengkap teracak dengan tiga ulangan menggunakan 20 genotipe F5 dan 5 genotipe pembanding. Hasil penelitian menunjukkan bahwa genotipe berpengaruh sangat nyata terhadap umur berbunga, umur matang polong pertama, umur panen pertama, umur panen terakhir, periode panen, tinggi tanaman, panjang rangkaian bunga, jumlah cabang produktif, jumlah polong, panjang polong, dan bobot biji/tanaman, yang mengindikasikan adanya keragaman. Semua karakter memiliki nilai heritabilitas tergolong tinggi, kecuali panjang rangkaian bunga, jumlah cabang produktif, bobot polong, dan bobot biji per tanaman tergolong sedang. Dendrogram yang dihasilkan memperlihatkan adanya 12 kelompok utama pada tingkat kemiripan 66,67 %. Genotipe F5 VR10/V1-10, Lom2/129-43, Lom2/129-37, dan Lom2/129-2 terpilih sebagai kandidat galur berdasarkan karakter periode panen pendek (18-28 hari) dan hasil tinggi (11,3-15,4 g)., Mung bean, the third most important legume food crop in Indonesia, has low productivity. This study aims to evaluate several IPB mung bean lines for their agronomic characters, harvest period, and yield potential. This research was carried out at the Leuwikopo Experimental Field in March-May 2022. The research design was an randomized complete block design with three replications using 20 genotypes F5 and 5 control genotypes. The results showed that genotype had a very significant effect on flowering age, first mature pod emergence, first harvest age, last harvest age, harvest period, plant height, inflorescence length, number of productive branches, number of pods, pod length, and seed weight per plant. All characters had high heritability values, except for inflorescence length, number of productive branches, pod weight, and seed weight per plant which were classified as moderate. The resulting dendrogram showed 12 main groups at a similarity level of 66,67 %. Genotypes VR10/V1-10, Lom2/129-43, Lom2/129-37, and Lom2/129-2 were selected as candidate lines based on their short harvest period (18-28 days) and high yield (11,3-15,4 g).
Keyword: dendrogram, genotipe, heritabilitas, periode panen, seleksi

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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