Judul: Keragaan 10 Galur Harapan Padi Sawah Tipe Baru (PTB) di Kabupaten Lebak, Banten
Abstrak: Rice is the main food commodities. The demand of rice increasing in line with growth of the population in Indonesia. Meanwhile, potential yield of new superior varieties (VUB) which has grown farmers have reached the optimum. Required assembling new varieties that have high yield potential and have a wide adaptability. The objective of this research were to evaluate potential yield of IPB New Plant Type of Rice (NPT) potential for hight yielding varieties in multilocation test and as part of the completeness data requirements for proposing varietie release. Research was done in Bojong Leles, Lebak, Banten from May until September 2011. The research was done using Randomized Complete Design Group (RKLT) by a single factor of genotypes or lines. Genotypes used were 10 IPB new plant type of rice promising lines there are IPB107-F-5-1-1, IPB107-F-65-3-1, IPB113-F-2-1-1, IPB115-F-3-2-1, IPB116-F-3-1-1, IPB116-F-44-1-1, IPB116-F-46-1-1, IPB117-F-1-3-1, IPB117-F-4-1-1, and IPB149-F-8-1-1 with 2 comparison variety, there are Ciherang and IR64. The research was repeated three replicates so that there are 36 units of the research. Each unit of the research were planted in a plot measuring 4 m x 5 m. Spacing used in these researchs was 2:1 legowo spacing (10 cm x 20 cm x 40 cm). The study further analyzed the F test on a real level 5%, if significantly different be followed by Dunnet t-test at 5% level. The results showed that lines tested showed an average yield lower up to the equivalent comparison varieties. Line IPB115-F-3-2-1 (6.38 tonnes / ha) is a line with the results closest comparison varieties. Some lines show a character who approached the character of NPT with important characteristics, low tillering capacity (8-13 tillers productive), large panicle and thick, number of grain filling a lot (200-250 grains/panicle), short growth duration (100-120 days), and 1000 grain weight of 26-29 g. Lines included are IPB107-F-5-1-1, IPB107-F-65-3-1, IPB116-F-44-1-1, dan IPB116-F-46-1-1. In general, some of the lines tested showed superiority on some characters, such as short growth duration, large panicle, and number of grain a lot. Research shows the percentage of grain is still high vacuum.
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Judul: Keragaan galur harapan padi tipe baru (PTB) IPB di Bogor dan Kulon Progo dalam rangka uji multilokasi
Abstrak: The objective of the experiment were to test yield potential and identify rice promising lines as part of multilocation yield trial. The experiment was conducted at two locations namely Bogor Regency, West Java and Kulon Progo Regency, D. I. Yogyakarta from January until May 2010. The experimental was arranged by Randomized Compately Block Design with three replications. The experimental consists of eight rice promising lines and two control varieties. The result of the analyses indicated that lines IPB97-F-13-1-1, IPB97-F-15-1-1, IPB97-F-20-2-1, IPB97-F-31-1-1, IPB97-F-44-2-1, IPB102-F-90-1-1, and IPB102-F-92-1-1 have yield were higher than Ciherang (6.764 ton/ha) and IR64 (6.972 ton/ha). Each lines having yield 8.228 ton/ha, 9.309 ton/ha, 8.692 ton/ha, 8.183 ton/ha, 8.222 ton/ha, 7.204 ton/ha, and 8.029 ton/ha recpectively. In addition, the location effected on the appreance of rice promising lines. There were interaction of genetic and environment on plant height, total number of tillers, panicle length, 1 000 grain weight and yield.
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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