Judul: Penambahan Kulit Pisang dan Umbi Ubi Jalar pada Media Pertumbuhan Dua Varietas Krisan (Dendrathema grandiflora Tzvelve) secara In vitro
Abstrak: This research aims to study the effect of addition various organic materials on the growth of chrysanthemum by in vitro. It was conducted at the Laboratory of Tissue Culture, Department of Agronomy and Horticulture. The experimental design was using a completely randomized design (CRD) with two factor. The first factor was media's treatment of organic material consists of seven standards (MS0 without the organic material, banana peels 50 g/l + ½ MS (½ concentration of macro, micro and vitamin), banana peels 100 g/l + ½ MS, banana peels 150 g/l + ½ MS, purple sweet potato 50 g/l + ½ MS, purple sweet potato 100 g/l + ½ MS and purple sweet potato 150 g/l + ½ MS). The second factor was the treatment of chrysanthemum varieties with two variety (Puspita Nusantara and Puspita Pelangi). The results showed that the addition of organic material in tissue culture media chrysanthemums influenced on plant height, number of leaves, number of roots, number of branches roots and root length. Chrysanthemum varieties influenced on plant height, number of leaves and number of branches roots. The interaction between organic media and chrysanthemum varieties occured in plant height at 4-10 weeks after cultured and root length of the longest at 10 weeks after cultured.
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Judul: Induksi Keragaman Dua Varietas Krisan (Dendranthema grandiflora Tzvelev) Dengan Iradiasi Sinar Gamma Secara In Vitro
Abstrak: The research aims were to study the effect of gamma irradiation doses on Chrysanthemum (Dendranthema grandiflora Tzvelev) and increasing the genetic diversit. The research were conducted at IPB Tissue Culture Laboratory, BATAN Laboratory, and IPB Micro Tehnique Laboratory, during February–November 2010. This research used completely randomized design with two factors. The first factor is varieties of Chrysanthemum, including Dewi Ratih and Puspita Nusantara. The second factor is five doses of gamma irradiation (0, 20, 40, 60, 80 Gy). The result showed that the interaction between varieties with doses of gamma irradiation affected growth of plants and the number of chloroplast in guard cell. The number and size (length and width) of stomata were influenced by a varieties and and irradiation dose as a single factor. Increasing doses of gamma irradiation could increase the length and width of stomata. LD50 of krisan planlets were obtained 22.22 Gy for Dewi Ratih and 22.85 Gy for Puspita Nusantara. The gamma radiation dose 20 Gy produced 13 potential mutant on Dewi Ratih and Puspita Nusantara varieties. Putative mutants characteristic showed small leaves and no serrated, reddish stems, stunted, rosette, and variegata leaves.
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Judul: Penentuan Frekuensi dalam Metode Polinom Lokal Kuadrat Terkecil untuk Mendeteksi Loncatan
Abstrak: Metode polinom lokal kuadrat terkecil adalah suatu metode statistika yang dapat digunakan untuk mendeteksi adanya loncatan persamaan regresi. Metode ini didasarkan pada pengepasan suatu fhgsi polinom terhadap tetangga terdekat dari beberapa data. Banyaknya data setiap tetangga disebut fiekuensi (k). Penentuan fiekuensi yang tepat diperlukan untuk mendapatkan hasil pendeteksian yang benar. Penentuan ini dilakukan dengan simulasi.
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