Judul: Induksi Pertunasan In vitro pada Jaringan Pucuk Apikal Tanaman Kurma (Phoenix dactylifera L.) cv. Barhee
Abstrak: Date palm (Phoenix dactylifera L.) has the potential to be cultivated in Indonesia. Commercial cultivation of date palm requires large amounts of seed. Tissue culture techniques can be used as a solution to produce date palm seedling rapidly and efficiently. The purpose of this study was to determine the concentration of BAP (Benzyl Amino Purin) which may induce shoots on dates explant and determined the most effective method of sterilization of explants. The explant used was apical shoot (1- 2 cm) that was then quartered vertically. The first stage was to determine the effective method of sterilization of explants using three methods of sterilization. The second stage was the cultivation of explants on Murashige and Skoog media with five treatments of cytokinin BAP (0, 1, 2, 4, 6 mg/L). The results showed that MS medium with BAP in the concentrations ranged 0 to 6 mg/L had not been able to induce any new growth on the plant tissue of date palm cultivar Barhee. The sterilization method 3, which used 20% Bayclin, 10% Bayclin, 0.1% Agrept, 0.1% Dithane M-45, and 70% ethanol was better than the other sterilization methods.
Keyword: Bogor Agricultural University, tissue culture, shoot, Date palm

Judul: Induksi Proliferasi Tunas Adventif Kenaf (Hibiscus cannabinus L.) Secara In Vitro Melalui Penambahan Zat Pengatur Tumbuh 2.4-D Dan BAP
Abstrak: This research aimed to study the response of plant growth hormones 2.4-D and BAP to stimulate shoot proliferation initiation from three type of explants (meristem, meristem with cotyledon, and cotyledon) of kenaf. The research performed at Tissue Culture Research Laboratory, Agronomy and Horticulture Department, Agriculture Faculty, Bogor Agriculture University, from February to November 2010. Adventitious shoot formation on MS media supplemented with combinations of 2,4-D (0.0, 0.5, 1.0 mg/l) and BAP (0.0, 2.0, 4.0, 8.0, 10.0 mg/l). Callus began to appear in 2 weeks for all treatments on meristem and meristem with cotyledon. Results of this research showed that the medium composition without the 2.4-D + BAP had the highest number of adventitious shoots from meristem with cotyledon explants. Adventitious shoots formed after 11 weeks in culture without callus formation. The highest number of adventitious shoots resulted from the medium composition without 2.4-D +10.0 mg/l BAP. The medium composition without the 2.4-D +4.0 mg / l BAP resulted the highest number of roots from cotyledon explants. The roots of kenaf formed after 3 weeks which is marked by the emergence of roots from callus that formed on cotyledon explants.
Keyword: 

Judul: Metrik Einstein (Anti-) Self-Dual Berdimensi Empat dengan Metode Cartan
Abstrak: Gravitational field equation can be formulated in differential forms (differential geometry), which describes gravity as a manifestation of the curvature of space-time. Curvature of space-time is characterized by a metric that satisfies the gravitational field equation. With differential forms it can be formulated the (anti-) self-dual Einstein equation, which is a modification of the Cartan structure in (anti-) self-dual basis. Calculation of (anti-) self-dual metric with (anti-) self-dual Einstein equation is simpler than the calculation using Christoffel symbols.
Keyword: