In this study the genetic resource of Pelung chicken from Cianjur, West Java, Indonesia, was exploited. Pelung chicken has a higher body weight growth, unique meat flavor, and superior posture, compared with other indigenous breeds. Kamper chicken line selective breeding program was conducted, to increase the performance of Pelung breed by crossing with Layer Lohmann Brown-Classic. The Layer Lohmann Brown-Classic is an imported laying-type breed, which is widely known for its reproductive performance, based on the egg productivity. This study aims to use quantitative genetic method in estimating the commercial and reproductive traits' performance of Kamper chicken line. Based on commercial, phenotypic and reproductive traits, the progenies in Kamper chicken line have significant improvements, compared to the parental cross of Pelung and Layer Lohmann Brown-Classic. The quantitative genetic method was used in describing and underlying some phenomenon, in the selective breeding program. Although quantitative genetic method is utilized in basic breeding program with significant precision and rapidness, it is only used in the preliminary study, for the advanced type. Therefore, the addition of quantitative trait loci (QTL), provide a more thorough genetic examination, and play a role in selective breeding program.

Abstract. Muammar A, Oktaviana I, Chohansandhika J, Handayani NSN. 2021. Insertion of cellulase gene in yeast expression vector (pYY1 and pWYH257 Plasmid) as a candidate for cellulosic ethanol-producing strain. Biodiversitas 22: 2715-2721. Production of ethanol from cellulose-based materials often faces obstacles because it requires extensive pretreatment and large amounts of cellulase enzymes. Another method that is more efficient is by inserting cellulase genes from cellulolytic microorganisms such as Aspergillus niger which possess cellulase enzymes encoded by cbhA gene. This gene is inserted into the host which will then be used to produce candidate strains able to produce cellulosic ethanol. This study aimed to insert cbhA gene into vector with a strong promoter to form the candidate. Total RNA was isolated from Aspergillus niger and converted into cDNA. The cbhA gene is amplified from cDNA, then used as insert and inserted into yeast expression vector pYY1 and pWYH257. Vector and inserts were cut using restriction enzymes. Ligation products were transformed into competent cells of Escherichia coli DH10B, the transformation results were confirmed by Colony PCR. Recombinant plasmids were transformed into Saccharomyces cerevisiae INVSc1. The results obtained from the study are that cbhA gene amplification has been successfully carried out by producing DNA bands with the size of 1514 bp as expected for the target gene. The gene was successfully inserted into pYY1 and pWYH257 vector and the recombinant pYY1 plasmid was successfully transformed into Saccharomyces cerevisiae INVSc1