Judul: Genetic parameter analysis  and  development of selection criteria for pineapple  improvement (ananas comosus (l.) Merr.) in Indonesia.
Abstrak: Information of genetic variability, heritability an d correlation between quantitative characters with yields is very important to support Pineapple Hybridization Program in Indonesia. This study has been conducted in four topics namely: (1) estimation of genetic parameters at some quantitative characters of pineapple germplasm, (2) study on correlation between some quantitative characters of pineapple germplasm, (3) study on genetic variability of pineapple crosses based on morphology and RAPD markers, (4) multivariate analysis and selection of the PKBT ‘Queen’ x ‘Smooth Cayenne’ hybrid collection for superior high yield and fruit quality. The objectives of the first topic were to examined the genetic variability and heritability of the agronomic characters of germpla sm collection. A total of 26 accessions of pineapple germplasm collection were used in this study. The results of the research showed that the leaf number, leaf l ength, number of hapas, days to flowering, days to harvest, peduncle length, peduncle diameter, fruit weight, fruit length, number of spirals, flesh thickness, total acid and vitamin C content have wide genetic variability. The leaf number, leaf length, number of hapas, number of suckers, days of flowering, days to harvest, fruit length, number of spirals, flesh thickness, total acid and vitamin C content have high heritability value. The characters which have high genetic gain (> 50%) were peduncle length and vitamin C content.
Keyword: morphology marker, RAPD marker, independent culling level selection, truncation selection, selection index

Judul: Keragaman Genetik Nenas (Ananas comosus (L.) Merr.) berdasarkan Penanda Morfologi dan Amplified Fragment Length Polymorphism (AFLP)
Abstrak: Information on genetic diversity is essential in breeding program. Characterization of germplasm for providing genotype variation data can be accomplished by phenotypic or genotypic assessment. The aim of this research was to know the genetic diversity among 21 pineapple accessions from Sumatera, Kalimamtan, Sulawesi, Irian Jaya, Jawa Barat, Bali and Jepang based on morphological character and Amplified Fragment Length Polymorphism (AFLP). The morphological data consisted of length, width, spine position and coloration of leaves. The data were categorized into class data and converted to binary form. Two selected primers P11 and M48 were used to generat AFLP markers. The twenty nine AFLP fragments were scored as binary form based on the presence (1) and absence (0) of each fragment. Similarity matrix was obtained to perform cluster analysis based on Dice coefficient. Dendrogram was constructed through clustering analysis using SPSS-13 software. An integrated similarity analysis of morphological and AFLP data showed that similarity coefficient among the 21 accessions ranged between 0.67-1.00. All the 21 accessions were clustered into tree groups at similarity index of 0.74. The first group consisted of 17 accessions, the second group consisted of 3 accessions and the third group contained 1 accession. However, all 21 accessions were closely related each other at 0.67 similarity coefficient.
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Judul: Formulasi Hamiltonian untuk Menggambarkan Gerak Gelombang Soliter Dimensi Tiga di Permukaan Laut
Abstrak: Gelombang permukaan adalah gelombang yang terjadi perbedaan rapat massa antara air dan udara. Salah satu gelombang permukaan yang ditinjau adalah gelombang soliter. Formulasi gelombang soliter dilakukan dengan menggunakan formulasi Hamiltonian.
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