Judul: Performance and Yield Evaluation Seven Genotype of IPB Hybrid and Non Hybrid Red Cayenne Pepper (Capsicum frutescens L.)
Abstrak: Cabai rawit merah (Capsicum frutescens L.) merupakan salah satu komoditas hortikultura yang penting dan mempunyai nilai ekonomi tinggi bagi masyarakat Indonesia. Hal ini menjadikan kegiatan pemuliaan tanaman cabai rawit merah perlu untuk dilakukan. Penelitian ini bertujuan mengevaluasi keragaan dan daya hasil tiga genotipe cabai rawit merah hibrida dan empat genotipe cabai rawit non hibrida dengan 3 varietas pembanding. Penelitian dilaksanakan dari bulan September 2022 sampai Maret 2023 di Kebun Percobaan Leuwikopo IPB. Penelitian terdiri dari satu faktor yaitu genotipe (7 genotipe dan 3 varietas pembanding). Penanaman menggunakan rancangan kelompok lengkap teracak dengan tiga ulangan. Hasil penelitian menunjukkan bahwa terdapat perbedaan keragaan dan daya hasil antar genotipe cabai rawit merah. Umur berbunga semua genotipe uji berkisar 41,33-45,67 HST dengan umur panen yang berkisar antara 83,33-92,67 HST. Persentase tanaman hidup yang diamati pada akhir panen berkisar antara 37,50-70,83% dengan varietas pembanding Rawita F1 yang memiliki persentase terendah sebesar 37,50%. Genotipe F1.372340 merupakan genotipe dengan produktivitas yang paling tinggi mencapai 4,80 ton ha-1. Produktivitas genotipe tersebut masih lebih tinggi dibandingkan produktivitas varietas pembanding yang berkisar 1,48-2,72 ton ha-1. Genotipe uji memiliki daya simpan berkisar 9,30-15,00 HSP yang sama atau lebih baik daripada varietas pembanding yang berkisar 9,67-12,33 HSP., Red cayenne pepper (Capsicum frutescens L.) is one of the important horticultural commodities and has high economic value for the people of Indonesia. This makes the chili plant breeding activities necessary to do. This research aims to evaluate the performance and yield of three genotypes of hybrid red cayenne pepper and four genotypes of non hybrid red cayenne pepper with three differences varieties. The research was carried out from September 2022 to March 2023 at the Leuwikopo Experimental Garden, IPB. The research consisted of one factor, which is genotype (7 genotypes and 3 control varieties). Planting using a randomized complete block design with three replications. The results showed that there were differences in performance and yield between red cayenne pepper genotypes. The flowering ages of all genotypes ranged from 41.33-45.67 DAP with the harvest ages ranging from 83.33-92.67 DAP. The percentage of live plants observed at the end of harvest ranged from 37.50-70.83% with the Rawita F1 variety having the lowest percentage of 37.50%. The F1.372340 genotype was the genotype with the highest productivity, reaching 4.80 tonnes ha-1. The productivity of these genotypes was still higher than the productivity of the control varieties, which ranged from 1.48 to 2.72 tons ha-1. The test genotypes had shelf life ranging from 9.30-15.00 DAH which was the same or better than the control varieties which ranged from 9.67-12.33 DAH.
Keyword: cayenne pepper, evaluation, hybrid, non hybrid, productivity

Judul: Yield Performance Evaluation of Hybrid and Non Hybrid Lines of Chili Pepper (Capsicum annuum L.) for New Variety Release
Abstrak: Cabai (Capsicum annuum L.) merupakan komoditas hortikultura yang bernilai ekonomi dan konsumsi yang tinggi, sehingga perlu dukungan ketersediaan varietas unggul dengan meningkatkan upaya pelepasan varietas atas kandidat varietas hasil pemuliaan tanaman. Penelitian ini bertujuan untuk mengevaluasi daya hasil galur hibrida dan non hibrida cabai besar IPB serta mengidentifikasi keunggulan galur uji cabai besar IPB yang akan dilepas menjadi varietas unggul baru. Penelitian ini dilaksanakan pada bulan September 2021 – Februari 2022 di Kebun Percobaan Leuwikopo IPB dan Laboratorium Pemuliaan Tanaman IPB. Rancangan percobaan yang digunakan adalah Rancangan Kelompok Lengkap Teracak (RKLT) faktor tunggal dengan genotipe cabai sebagai perlakuan. Perlakuan genotipe terdiri dari 10 genotipe cabai yang terdiri dari 1 galur uji hibrida, 2 galur uji non hibrida, 5 varietas pembanding hibrida, dan 2 varietas pembanding non hibrida. Setiap genotipe diulang sebanyak tiga kali sehingga terdapat 30 satuan percobaan. Hasil penelitian menunjukkan bahwa galur uji hibrida (F1.074005) maupun non hibrida (F12.120005 dan F8.074136) memiliki keunggulan seperti umur berbunga dan umur panen tergolong genjah (21,67-23,67 HST dan 66,3-68 HST), penampilan buah yang termasuk ke dalam mutu I SNI, bobot per buah tinggi (6,73 – 10,96 g), jumlah buah per tanaman banyak (78 – 129 buah), dan persentase hidup tinggi (88,33 – 96,67 %). Hasil uji korelasi menunjukkan bahwa potensi hasil tanaman berkorelasi sedang dengan karakter panjang daun, ketebalan buah, bobot per buah, jumlah buah per tanaman, bobot buah per tanaman, produktivitas, dan persentase hidup tanaman. Galur hibrida F1.074005, dan dua galur non hibrida F12.120005 dan F8.074136 direkomendasikan untuk dilepas., Chili (Capsicum annuum L.) is a horticultural commodity that has high economic value and consumption, so it is important to support the availability of high-yielding varieties by increasing efforts to release candidate varieties generated through plant breeding. This study aims to evaluate the yield of hybrid and non-hybrid test lines of chili pepper IPB and identify the advantages of test lines of chili pepper IPB which will be released into new high yielding varieties. This research was carried out in September 2021 – February 2022 at the Leuwikopo Experimental Garden of IPB and the Plant Breeding Laboratory of IPB. The experimental design applied a single factor Randomized Complete Block Design (RCBD) with chili genotype as the treatment. The genotype treatment consisted of 10 chili genotypes consisting of 1 hybrid test line, 2 non-hybrid test lines, 5 hybrid comparison varieties, and 2 non-hybrid comparison varieties. Each genotype was repeated three times so that there were 30 experimental units. The results showed that the hybrid test lines (F1.074005) and non-hybrid (F12.120005 and F8.074136) had such as flowering age and early harvesting age (21.67-23.67 DAP and 66.3-68 DAP), fruit appearance which is included in SNI I quality, high weight per fruit (6.73 – 10.96 g), large number of fruit per plant (78 – 129 fruit), and high proportion of living plant (88.33 – 96.67 %). The results of the correlation test showed that the potential yield of plants was moderately correlated with the characters of leaf length, fruit thickness, weight per fruit, number of fruit per plant, fruit weight per plant, productivity, and percentage of plant life. The
Keyword: genjah, genotipe, mutu SNI, pembanding, comparison, early maturing, genotype, SNI quality

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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