Judul: Keragaan galur harapan padi sawah tipe baru di Sukabumi dalam rangka uji multi lokasi
Abstrak: Agronomy and Horticultural Departement, Bogor Agricultural University, has been researched for several rice promising lines to release high yielding variety. This experiment is a part of multilocation yield trial. The experiment was conducted at Sukabumi Regency, West Java on January until May 2010. The research was arranged by Randomized Compately Block Design with 3 replications. The result showed that the highest yield (7,7 t/ ha) obtained from IPB102-F-92-1-1 whereas the lowest yield obtained from IPB102-F-91-2-1 (5,2 t/ha). The productivity of IPB102-F-92-1-1 is only significantly higher than Ciherang and IR64. The other productivity were as same as Ciherang and IR64. The performances of IPB97-F-13-1-1, IPB97-F-15-1-1, IPB97-F-20-2-1, IPB97- F-31-1-1, IPB102-F-92-1-1, and IPB107-F-16-5-1 are representing new plant ideotype.
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Judul: Pengujian 10 Galur Harapan Padi (Oryza sativa L.) Tipe Baru IPB di Dramaga, Bogor dalam Rangka Uji Multilokasi
Abstrak: The experiment was conduted to evaluate production variability and agronomic traits of ten new plant type rice held at Sawah Baru Experimental Field, Dramaga, Bogor in April−August 2014. Experiment using Randomized Completely Block Design, single factor and three replications. The factor was lines which selected from advanced yield trial that have been conducted before (IPB160-F-36-2-1, IPB160-F-36-5-1, IPB160-F-36-25-1, IPB160-F-46-6-1, IPB160-F-54-2-1, IPB160-F-54-3-1, IPB160-F-54-21-1, IPB162-F-10-2-1, IPB162-F-17-1-1, IPB168-F-8-1-1), and two national varieties (Ciherang and Mekongga) as a check. The result showed that line IPB160-F-36-2-1 which productivity is 7.95 ton ha-1 have significantly higher productivity than Ciherang (6.62 ton ha-1) and Mekongga (6.86 ton ha-1). There are lines that have equal productivity from check with good yield components which potential for further development, that lines are IPB160-F-54-2-1 (7.37 ton ha-1) and IPB160-F-54-21- 1 (7.51 ton ha-1)
Keyword: Bogor Agricultural University (IPB), rice, new type, multilocation, line, high yield

Judul: Penggunaan Teorema Homeomorphy 2-Manifold dan Teorema Euler Poincare pada Torus 𝑇�� dan Simplicial Complex 𝐾��
Abstrak: Two dimensional topological spaces are said to be homeomorphic if they have the same topological invariant, where one of topological invariant used is an Euler characteristic. Homeomorphy 2-Manifold’s Theorem and Euler Poincare’s Theorem are used to distinguish two topological spaces. Homeomorphy 2-Manifold’s Theorem uses Euler characteristic to identify two dimensional topological spaces. Euler Poincare’s Theorem is an alternative way to find Euler characteristic with Betti number, which is topological invariant as well. The objective of this paper is to investigate the homeomorphism of torus 𝑇����� and simplicial complex 𝐾�����. Topological space torus and simplicial complex 𝐾����� have the same Euler characteristic, which is two. Based on Homeomorphy 2-Manifold’s Theorem topological space torus 𝑇����� and simplicial complex 𝐾����� is homeomorphic.
Keyword: simplicial, torus, Euler, homeomorphism, topology