Judul: Altitude And Shading Conditions Affect Vegetative Growth Of Kaempferia parviflora
Abstrak: Kaempferia parviflora is a native plant of Thailand which potentially developed in Indonesia because of its pharmacological values. Thus, in order to develop appropriate cultivation system of K. parviflora in Indonesia, this research was conducted to study the effect of different altitudes and shading conditions on the vegetative growth of K. parviflora. The experiment was arranged in Split-plot Nested design, where the main plot was altitude with two factors (1 200 m asl at Pasir Sarongge Experimental Farm and 240 m asl at Cikabayan Experimental Farm), the subplot was three levels of shading condition (0% shading, 55% shading, and natural shading), and replication was nested at subplot. The results showed that there was no significant different in plant height, number of leaves, and leaf area of K. parviflora grown at 1 200 m asl and 240 m asl respectively. However, higher altitude affects the color of K. parviflora leaves. Plants grown at higher altitude (1 200 m asl) had greener adaxial leaf color and more reddish abaxial leaf color than plants grown at lower altitude. The vegetative growth of K. parviflora was more affected by shading conditions. Kaempferia parviflora had taller plant, higher leaf area, and greener adaxial leaf color under natural shading than under full sun condition. Plants grown under natural shading and 55% artificial shading also had higher number of leaves at the early vegetative growth than those grown under full sun condition. Plants grown under 55% artificial shading showed similar growth with plants grown under natural shading, except that plants under natural shading had higher leaf area than plants grown under 55% artificial shading. The best combination between altitude and shading was of 240 m asl with natural shading. Based on the early vegetative growth, Kaempferia parviflora was shade plant that can be grown at 240 to 1 200 m asl without major difference.
Keyword: 

Judul: Pematahan Dormansi Rimpang Kaempferia parviflora Wall Ex. Baker
Abstrak: Kaempferia parviflora (Zingiberaceae family) has a potency to be developed for a new medicinal plants in Indonesia. One of problems in its cultivation is the lack of planting material availability due to the long dormant period. The objectives of this research were to study the effect of various concentrations of BAP and ethephon, and also the effect of the prior growing condition to the dormancy breaking and shoot growth of K. parviflora rhizome. Two separate experiments were applied for two lots of rhizomes namely Cikabayan and Pasir Sarongge lots. Each experiment was arranged in completely random design with 2 factors. Experiment-1 used 4 concentrations of BAP (0, 50, 100, and 150 ppm) as the first factor. While, experiment-2 used 5 concentrations of ethephon (0, 200, 400, 600 and 800 ppm) as the first factor. The second factor in both experiments were prior shade condition at 55% artificial shading and natural shading. A rhizome without soaked application (control) and a rhizome with soaked by aquadestilata without PGRs (0 ppm) were used as compared items. Data was analyzed with ANOVA. Combined Analysis of Variance and t-test were performed in order to compare between 2 lots. Result showed that concentration of BAP until 150 ppm and concentration of ethephon until 800 ppm were not effective to stimulate bud induction time. Meanwhile, rhizome from 55% artificial shading had a shorter periode of dormancy than the natural shading. In the addition, plants from Pasir Sarongge rhizomes lot had more plant number, plant height, leaf number, leaf length, and leaf width than Cikabayan rhizomes lot.
Keyword: 

Judul: Rantai Markov Pada Bilangan Biner
Abstrak: Ranlai Markov {Xn} yang didefinisikan pada ruang peluang (n, P, P) dilllana n = (O,I],dan 'Fadalah cr-lapangan Borel, lllelllpunyai ekspansi biner X n = 0, dl(n) din).. n = I, 2, ... Mengkonstruksi rantai Markov ini diawali dengan memilih sembarang bilangan ..Y o di (0,1], nyatakan bilangan Xo dalam ekspansi biner Xo =0, diD) diD) ... d~O) ... dimana { d~O) ,n = 1,2, ... } adalah barisan nol dan satu. Peubah acak XI ditentukan oleh .Xo dan asumsi berikut.
Keyword: