Judul: Genetic diversity analyses of introduction bananas (Musa spp.) based on phenotypic and RAPD (Random Amplified Polymorphic DNA)markers
Abstrak: Genetic diversity analyses were conducted on 27 Musa spp. accessions introduced from INIBAP Transit Center (ITC), which are collected by Center for tropical fruit studies based on phenotypic performance and RAPD markers to evaluate genetic distance and relationship pattern among these accessions. Seventy two vegetatif traits and 8 RAPD primers had been used in this study.
Keyword: 

Judul: Diversity Analysis of Banana (Musa spp.) Based on RAPD and ISSR Molecular Markers
Abstrak: Persilangan kedua tetua pisang, Musa acuminata (AA) dan Musa balbisiana (BB), menghasilkan keragaman tingkat ploidi yang menghasilkan variasi sifat pada setiap kultivar pisang. Analisis keragaman pisang dengan pendekatan morfologi cenderung lebih mudah untuk dilakukan tetapi dapat karakter tersebut dipengaruhi oleh lingkungan. Oleh karena itu, pada penelitian ini perlu dilakukan analisis keragaman pisang menggunakan marka molekular RAPD dan ISSR untuk mendeteksi perbedaan pada tingkat DNA. Metode yang dilakukan yaitu pengamatan morfologi, isolasi DNA kultivar pisang, amplifikasi DNA menggunakan primer RAPD dan ISSR, dan pengolahan data hasil PCR dengan scoring dan software PAST 4. Analisis keragaman genetik menggunakan marka RAPD dan ISSR pada delapan kultivar pisang menghasilkan 164 pita DNA dengan rata-rata persentase pita polimorfik 78.9%. Jarak kekerabatan terjauh dari seluruh kultivar pisang yang dipelajari terdapat pada pisang Lampung yang merupakan satu-satunya sampel bergenom diploid., Crossing the two parental bananas, Musa acuminata (AA) and Musa balbisiana (BB), results in a diversity of ploidy levels that produce variations in traits in each banana cultivar. Analysis of banana diversity with a morphological approach tends to be easier to do, but the environment can influence the character. Therefore, in this study, it is necessary to analyze banana diversity using RAPD and ISSR molecular markers to detect differences at the DNA level. The methods used were Morphological observation, Isolation of banana cultivar DNA, DNA amplification using RAPD and ISSR primers, and data processing of PCR results with scoring and PAST 4 software. Analysis of genetic diversity using RAPD and ISSR markers on eight banana cultivars produced 164 DNA bands with an average percentage of polymorphic bands of 78.9%. The farthest relationship distance of all studied banana cultivars was found in the Lampung banana, the only diploid genome sample.
Keyword: morfologi, PCR, kekerabatan, marka molekuler, polimorfisme

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.
Keyword: