Paper Title
Orchid Ultrastructure Dendrobiumspectabile (Blume) Miq. Consequences of Alcoholsugar and Antimicrobia Effect in Acclimatization Process

Abstract
In the process of orchid plant growth, environmental conditions and physiological response of plants will affect the condition of the structure of the plant. The environmental change in the acclimatization process is because there is a change in the environment of plants that previously lived in a sterile bottle to an open environment that is not sterile. As the environment changes, the physiological responses and ultra-structural phenomena also change. This research is a follow-up research of research on media modification in vitro Media UntungSantoso (MUS) as an orchid acclimatization media that can be applied ex vitro, which is expected as a solution of acclimation process that will be better. Therefore, research has been done to evaluate the ultra aspect of orchid structure of Dendrobiumspectabile (Blume) Miq which acclimatized with MUS media plus sugar alcohol and antimicrobial with scanning electron microscope. Approach done through experiment using Factorial Random Block Design. The purpose of this study is to look at the ultra-seed structure of orchid plants due to physiology process of post-culture adaptation in vitro. The results of this study indicate that in the acclimation process where physical and biological stress occurs, the emergence of special mechanisms as an adaptation process involves changes in the anatomical structure that cause changes: The velamen network is formed up to 5-6 layers, the stomata structure changes shape, size, density and number of stomata. The shape becomes narrowed his mouth and lies down below the epidermis. The size is smaller, the number more and the meeting on the same viewing area. Keywords - Ultrastructure, adaptation, orchid, media.