Judul: Analisis Keragaman Beberapa Genotipe Durian (Durio zibethinus Murr.) Menggunakan Penanda Morfologi dan Molekuler (ISSR).
Abstrak: Indonesia is one of the durian diversity center. Evaluation and characterization activities should be conducted to identify the genotipes in order to differentiate the individual plant in the spesies. Genetic variation of 21 collected genotipes of Indonesia Agency for Agricultural Research and Development (IAARD) Cipaku orchard, Bogor was evaluated using morphological and Inter Simple Sequence Repeat (ISSR) markers. Variability analysis based on 22 morphological characters gained 64 (100%) polymorphism. Molecular analysis using ten primers of ISSR amplified 48 locus. The 39 locus (81.25%) were polymorphic and the 9 locus (18.75%) were monomorphic, respectively. Both of the markers have different clustering, therefore they should be analysed using Joint Analysis. The result of the study showed genetic variability among 21 genotipes was grouped into 2 clusters on 0.51 similarity coefficient. The first group (A) consisted of the genotipe from Indonesia and the second group (B) consisted of Kanjau genotipe from Thailand with matrix correlation value was 0.83. Kanjau genotipe was suggested as a candidate in durian breeding programme, in order to increase Indonesian durian value in the future.
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Judul: Analisis keanekaragaman genetik durian lokal serang berdasarkan penanda morfologi, isozim, dan gabungan morfologi-isozim
Abstrak: Serang regency was known has high diversity of Durian (Durio zibethinus Murr.) landraces. In order to elucidate the genetics variability of the diversity, eighteen iandraces from four locations were subjected to morphological studies and isoenzymes analysis. The obtained data were ana:yzed for genetics relationshii) among landraces base on morphological and isoenzymes characters and compatibility between morphological and isoenzymes characters. Base on twelve morp:1ological characters there were 58 % of dissimilarity level indicates medium morphological variability. lsoenzymes analysis by using 7 proteins resulted 39 bands, and genetics variability of evaluated tree5 were 93 % of dissimilarity level. The concurrence analysis on morphological and isoenzymes analysis result, showed the very weak Rohlf correlation value (r=0,57). This result vVas indicated that grouping of durian landraces should be using joint of rnorphological-isozyme analysis. Joint morphological-isozyme cluster analysis showed that genetics variability among evaluated trees were 58 % of dissimilarity level, and at 51 % level dissimilarity, the durian landraces in Serang Regency should be r;lassified into four groups i.e., 1) Seureuh, Pedes, Sawah, Paok, (2) Balingbin\j, Emas, Puso, Tolaksana, Potret, Liter, Maslai, Onder, TM, (3) Belu, Carnal, and 4) Montong, Chanee, and Rampayak.
Keyword: Plan breeding, Isozyms, Genetic diversity, Durian (Durio zibethinus Murr.), morphological markers, isozyme analysis, genetic diversity.

Judul: Hydroxyapatite-Chitosan Composite Coating on Stainless Steel 316 to Improve Corrosion Resistance
Abstrak: Metals that were used in bone implantation should have good corrosion resistance that were not easily corroded when implanted into the body. Metal corrosion resistance of stainless steel 316 can be enhanced through the metal coating by hydroxyapatite-chitosan composite with composition ratio of hydroxyapatite (gram) and chitosan 3% (mL) 0.2:0, 0.2:0.1, 0.2:0.5, 0.2:1.0, and 0.2:1.5. Besides improving the corrosion resistance of metal, the presence of chitosan also maintain the position of hydroxyapatite on metal surfaces. Corrosion resistance increases with increasing amount of chitosan added and the best composition of hydroxyapatite-chitosan composite was 0.2:1.0.
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