Judul: Seleksi Beberapa Genotipe Melon Cantalupensis (Cucumis melo L. var. reticulatus) di Dua Musim Tanam.
Abstrak: The diversity of melon types in the markets and the availability of locallyproduced melon seeds are still relatively limited, therefore breeding for new melon varieties is promising. This study aimed to evaluate the horticultural characteristics of several cantaloupe melon genotypes (Cucumis melo L. var. reticulatus) and to identify potential genotypes. The experiment was conducted in two cropping seasons, i.e. September to December 2014 in the village of Cibeureum, Mulyaharja, Bogor, and January to March 2015 at the PKHT IPB Tajur II experimental station, Bogor. The study was conducted using a single factor randomized complete block designwith 10 genotypes and three replications in each season. There was considerable diversity among the melon genotypes for all traits except for days to hermaphrodite flowering. Traits with high broad sense heritability are leaf width, fruit diameter, fruit weight, and rind thickness. Genotypes selected from the second season based on fruit weight and sugar content are H94XMRE, R2, and AFAXPAS. Cluster analysis showed that all evaluated genotypes except R5 are grouped together. The selected genotypes have a level of similarity with Eldorado and Emerald Jewel varieties and can be utilized as potential genetic sources in a melon breeding program.
Keyword: cluster analysis, netted melon, randomized complete block design, selection index

Judul: Plant Morphological Characteristics and  Fruit Quality of 26 Genotypes of Melon (Cucumis melo L.)
Abstrak: Melon merupakan salah satu komoditas hortikultura yang memiliki nilai ekonomis dan berpotensi untuk dikembangkan. Pembentukan varietas unggul dalam negeri perlu terus diupayakan melalui program pemuliaan tanaman. Penelitian ini bertujuan mempelajari keragaman karakteristik morfologi tanaman dan kualitas buah pada sejumlah genotipe melon hasil pemuliaan dari Pusat Kajian Hortikultura Tropika IPB, dan mengidentifikasi genotipe melon potensial untuk program pemuliaan tanaman. Penelitian dilakukan di Greenhouse C Kebun PKHT IPB Tajur 1 dan Laboratorium Pasca Panen Departemen Agronomi dan Hortikultura IPB dari bulan Oktober 2022 hingga Januari 2023. Genotipe yang dievaluasi terdiri atas 25 genotipe koleksi PKHT IPB dan satu varietas hibrida komersial sebagai pembanding yaitu Alisha F1. Percobaan menggunakan rancangan kelompok lengkap teracak (RKLT) faktor tunggal (genotipe) dengan tiga ulangan. Hasil penelitian menunjukkan bahwa genotipe berpengaruh nyata terhadap semua karakter kuantitatif yang diamati termasuk karakter kualitas buah (PTT, kekerasan kulit buah, vitamin C, dan TAT). Analisis korelasi menunjukkan bahwa diameter buah berkorelasi positif dengan bobot buah dan berkorelasi negatif dengan TAT. Genotipe G1, G41, HD 1–145, 316, HD 2–111, dan P34 berpotensi dikembangkan lebih lanjut dalam program pemuliaan., Melon is one of the horticultural commodities with significant economic value and potential for development. Breeding improved domestic varieties needs to be continuously pursued through plant breeding programs. This study aimed to elucidate the plant morphological characteristics and fruit quality of several melon genotypes from the Center for Tropical Horticulture Studies IPB and identify potential melon genotypes for plant breeding programs. The research was conducted at Greenhouse C of PKHT IPB Tajur 1 Experimental Station and Post Harvest Laboratory of the Department of Agronomy and Horticulture IPB, from October 2022 to January 2023. Genetic materials evaluated were 25 genotypes from the PKHT IPB collection and one commercial hybrid variety Alisha F1 as a check. This experiment was arranged in a randomized complete block design (RCBD) with a single factor (genotype) and three replications. The results showed that genotypes significantly influenced all quantitative traits observed including fruit quality traits (TSS, fruit skin hardness, vitamin C, and TTA). Correlation analysis among traits indicated that fruit diameter had a positive correlation with fruit weight and a negative correlation with TTA. Genotypes G1, G41, HD 1–145, 316, HD 2–111, and P34 are considered potential for further development in a breeding program.
Keyword: fruit quality, genetic variability, melon breeding, traits

Judul: Peluang Partikel Plasma Berada Pada Dimensi Debye Akibat Gangguan Gelombang Elektromagnetik dengan Menggunakan Persamaan Schrödinger
Abstrak: The solution of Schrodinger equations with plasma Coulomb potential in spherical coordinat results solution wave function and energy plasma particle. Electron probability density at Debye length with thermal effect same as ion, which indicates plasma in neutral state. Electromagnetic waves perturbation of an electric field given to result wave function perturbation system. The probability density of plasma particle due to electromagnetic waves perturbation is the largest when an electromagnetic waves frequency 1.41 times the plasma frequency .
Keyword: Schrödinger, plasma, electromagnetic wave