Judul: Keragaan Plasma Nutfah Padi (Oryza sativa) pada Kondisi Suhu Tinggi
Abstrak: The Experiment was conducted at Field Station Research of Cikabayan, Bogor Agricultural University in April- August 2013. The objective of the research was to evaluate rice germplasm tolerance to high temperature conditions. The experiment was arranged in Augmented Randomixed Block Design with 8 national variety of rice as checks. The genotypes evaluated were 49 consisted of 20 promising lines and 29 local varieties. The results showed genotypes influenced to the characters plant height at vegetative stage, time of flowering, plant height at harvesting time, long of panicle, number of total tiller, number of productive tiller, time of ripening, number of filled grain, number of empty grain, seed index, weight of total filled grain, number of total empty grain, and percentage of empty grain were very singnificant different among genotypes evaluated. There were several lines and local varieties that had results equals or higher with the checks, namely Mekongga, IR 64, Inpari 13, IPB 3S, IPB 4S, IPB 5R, IPB 6R and IPB 7R.
Keyword: tolerance, rice germplasm, high temperature, evaluation

Judul: Respon Pertumbuhan Beberapa Genotipe F1 Padi (Oryza sativa L.) terhadap Cekaman Suhu Tinggi
Abstrak: The experiment was conducted on Maret to June 2014 at the Experimental Farm Bogor Agricultural University, Cikabayan, Dramaga, Bogor. The purpose of research was to observation the effect of high temperature on the crossing-genotypes, got the tolerant crossing-genotypes, and created the genotype that has the best heterosis and heritability value. In this research, there are 4 the crossing-genotypes that tolerant in high temperature, namely: IPB 4S x Situ Patenggang Marinah x IPB 6R, IPB 4S x IPB 6R, and IPB 4S x IR64. The result of research showed that the number of total tillers, productive tillers, the number of filled out stalks, the mass of filled out/plant, the mass of empty stalks/plant, the total mass of stalks, and the mass of thousand grain was very significantly different for all of genotypes. The number of tillers total 45 DAP (days after planting), the age of flowering, the age of harvesting, the number of empty stalks, and the percentage of filled out stalks was significantly different for all of genotypes. The height of plant 45 DAP and harvesting, the greening of leaf 45 DAP and harvesting, the capacity period, the height of panicle, and the number of stalks total was not significantly different.
Keyword: Bogor Agricultural University (IPB), heritability, the productive tiller, plant height

Judul: Truncated Stop Loss as a Optimal Solution of Reinsurance Agreement in One-Period Model
Abstrak: Reinsurance is one of risk management efforts of an insurance company, which is called the cedent. Similar with insurance, reinsurance constitutes the cedent to pay the premium. We consider one-period reinsurance model and derive a rule which minimizes the ruin probability of the cedent for a fixed reinsurance premium. Therefore, it is needed to construct an optimal reinsurance agreement for the cedent. The premium is calculated according to four different principles, i.e. economic, generalized zero-utility, Esscher, and mean-variance principles. Stop loss is a reinsurance contract which protect the insurance company for losses that exceed a certain amount. The result of this research shows that a truncated stop loss is an optimal agreement in the class of all reinsurance contracts with various premiums calculated using above mentioned principles.
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