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Pengolahan Air Limbah Industri Karton Box Dengan Metode Integrasi Upflow Anaerobic Sludge Bed Reactor (UASB) Dan Elektrokoagulasi-Flotasi

uasbPenelitian ini bertujuan untuk menginvestigasi kinerja teknologi integrasi Upflow Anaerobic Sludge Bed Reactor (UASB) dengan elektrokoagulasi-flotasi (ECF) sebagai unit pengolah air limbah industri karton box dalam berbagai kondisi operasi. Sebelum diaplikasikan, unit UASB diawali dengan proses aklimatisasi selama 7 hari menggunakan dua jenis substrat, yaitu gula dan pati.

Aplikasi Teknik Rekayasa Genetik Dalam Perbaikan Sumber Daya Genetik Tanaman Untuk Ketahanan Cekaman Biotik

prg1The Application of Genetic Engineering Techniques in the Improvement of Plant Genetic Resources for Biotic Stresses Resistance.The main constraint encountered in the utilization of plant genetic resources (PGR) in agriculture are biotic stresses such as insect pests, plant diseases, and plant parasitic nematodes. The application of genetic engineering techniques create a great opportunity for crops improvements particularly for insect and plant diseases resistance.

Evaluasi Plasma Nutfah Kacang Tunggak (Vigna Unguiculata L.) Di Lahan Masam

Evalution of Cowpea (Vigna unguiculata L.) Germplasm in Acidic Soil. Plant genetic resources are as a source of genetic variability and can be used to develop new varieties tolerant to abiotic and biotic stress. Evaluation of cowpea germplasm to abiotic stress, such as acidic soil has to be done to obtain information of their tolerance. Cowpea germplasm collection held in ICABIOGRAD was tested under acidic soil condition in Jasinga, West Java and Bogor as control during March-June 2007. The criteria of tolerance to acidic soil was determined when the grain yield of cowpea under acidic soil more than 80% compare to those yield under non acidic soil, while susceptible to acidic soil when lower than 25%. Result of experiment showed that accession of LO-3-38, Ces-41-6, TVX-4661-01D-A, IT82-889-A, TV.3381-0-2j-B and Kacang Tolo Loreng were tolerant to acidic soil, while Kacang Dadap dan Kacang Tolo were susceptible. These accessions could be used as parent materials for genetic study related to acidic soil stress. 

Identifikasi Sumber Ketahanan Aksesi Plasma Nutfah Kedelai Untuk Ulat Grayak Spodoptera Litura F.

Source of Resistance in Soybean Germplasms to the Common Cutworm Spodoptera litura F. The important aspect of development of resistant plant to insect pest is source of resistance. Study the resistance of 14 advance soybean breeding lines to common cutworm Spodoptera litura F. was conducted at the Laboratory of Crop Protection, Indonesian Legumes and Tuber Crops Research Institute (ILETRI) Malang in February-September, 2006. Leaf damage and larval development on resistant genotypes was recorded to measure the level of resistance. It was found that the usceptibility of soybeans to the common cutworm significantly varied among the breeding lines.

Keragaman Karakter Morfologis Plasma Nutfah Spesies Padi Liar (Oryza SPP.)

Morphological Characteristic Diversity of Wild Rice Species (Oryza spp.) Germplasm. Wild rice spesies is relative of cultivated rice and has many differences of its characteristic. Morphological characteristic variation on crop can be used as working assets in breeding program. Morphological characterisation was conducted in three planting seasons in 2004 until 2005 at Indonesian Center for Agriculcural Biotechnology Research and Development green house consisted of 88 accessions of 18 wild rice spesies which belonged to 4 groups of Oryza spp. (Oryza sativa, O.officinalis, O. meyeriana, and O. ridleyi). The characteristic observed were include 12 quantitative characters and 5 qualitative characters with 23 subcharacters. The wide of quantitative orphological character variances were found in plant high, tiller number, days of flower, total number grain/ panicle, awning length and stalk diameter, while the narrow character variances were found in panicle length, 1.000 grains weigth, grain shape, total internode and internode length. The qualitative characters variance were found in grains, stalk, ligule and leaf morphology, while panicle morphology of wild rice species was dominated by open panicle type, erect panicle, secondary branching were absent and well exserted. 

Evaluasi Toleransi Plasma Nutfah Padi terhadap P Rendah di Tanah Sawah

toleransi-plasmaA field experiment was conducted to assess genotypic variability of tolerance and to identify tolerant genotypes to low phosphorus (P) among rice germplasm on lowland (paddy) rice field with low available and potential P using strip plot design with three replications. P fertilization (with and without added P) was assigned as horizontal factor and 120 rice plant genotypes as vertical factor. Data on plant height, tiller number, and shoot dryweight were collected. Low P tolerance was judged by relative value i.e. observation value at the plot without P treatment devided by the value at the plot with P treatment. The judgement was determined based on IRRI standard. Shoot P uptake of five tolerant and five sensitive genotypes on no added P treatment was also observed. The results showed that the germplasm exhibited phenotypic and genotypic variability of low P tolerance. The highest genotypic variability of tolerance was shown by the value based on relative tillering number (28.7%), followed by that of relative shoot dryweight (22,6%) and relative plant height (7,6%). The highest broadsense heritability of tolerance was shown by the value based on relative tiller number (24.1%), followed by that of relative plant height (16.6%) and relative shoot dry weight (15.0%) Fourteen genotypes were identified as highly tolerant based on relative tiller number and 28 genotypes based on relative shoot dryweight. The tolerance of genotype was attained by higher P uptake and higher internal use efficiency. (Abd. Aziz Syarif, Didy Sopandie, M.A. Chozin, K. Idris, dan Suwarno)

Marka Mikrosatelit sebagai Alternatif Uji BUSS dalam Perlindungan Varietas Tanamam Padii

tree-gen-padiThis study was conducted at the Indonesian Center for Agricultural Biotechnology and Genetic Resources Research and Development to seek the feasibility of using SSR markers for DUS testing in rice variety. Released variety Fatmawati together with seven other reference varieties were analyzed using genetic analyzer for their variability, ten SSR markers were used. Hundred and twenty five alleles located on chromosomes 1, 2, 5, 6, 7, 10, and 11 were detected in eight varieties studied, where the number of alleles ranging from 6 (BPC) to 33 (Fatmawati), with the predominant markers such as RM11 on Fatmawati, Maros, Barumun, Gilirang, and Memberamo varieties, RM237 on Cisadane and BP630 varieties, and RM133 and RM287 markers on BPC variety. The genetic distance-based results in the unrooted neighbor-joining tree revealed that the eight varieties as well as their populations clustered separately. Genetic variability within each variety indicated that these varieties were still in higher degree of heterogeneity. This demonstrated the power of SSR marker in differentiating varieties as well as population within variety, which, therefore, SSR marker could be recommended in plant variety protection.(Sugiono Moeljopawiro)

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