Respon Fisiologis dan Anatomis Organ Vegetatif Anggrek Vanda tricolor Lindl. yang Tumbuh Pada Lereng Selatan Gunung Merapi dan Lereng Barat Gunung Lawu

• المؤلفون الرئيسيون: , Berliani Suparno Putri, , Dr. Kumala Dewi, M.Sc.St.
• التنسيق: Theses and Dissertations NonPeerReviewed
• منشور في: [Yogyakarta] : Universitas Gadjah Mada 2013
• الموضوعات: ETD
• الوصول للمادة أونلاين: https://repository.ugm.ac.id/119885/; http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=59890

Vanda tricolor is one of typical orchid found in southern slope of Mount Merapi and western slope of Mount Lawu. Different environmental condition would affects plant growth in terms of physiological responses and anatomy of plant. The aim of this research was to examine the physiological responses and anatomical character of vegetative organs of V.tricolor which naturally grew on southern slope of Mount Merapi compared to V.tricolor which naturally grew on western slope of Mount Lawu. Physiological parameters examined were abscisic acid level and chlorophyll content, anatomical characters examined including roots, stem and leaves. The association between orchid roots and mychorriza was evaluated as well. Level of abscisic acid was determined using HPLC methode, chlorophyll content was determined using spectrophotometry, anatomical characters was prepared using free-hand section and non embedding using sliding mycrotome. Distribution of mycorhizza on orchid roots were determined using triphan blue staining. Data were analyzed with statistical analysis Independent T-test to determine sinificantly different results. Anatomical characters also were analyzed descriptively. The result showed that abscisic acid level of V.tricolor grew on southern slope of Mount Merapi higher (15,008a ppm) than V.tricolor grew on western slope of Mount Lawu (2,978b ppm). Chlorophyll content of V.tricolor Mount Merapi higher (0,361a mg/g) than V.tricolor Mount Lawu (0,245b mg/g). Anatomical character showed that V.tricolor grew on southern slope of Mount Merapi has a higher value compare to V.tricolor grew on western slope of Mount Lawu in the thickness of velamen and exodermis of aerial roots, the trakea number of roots, trakea diameter of stem vessel, thickness of stem bundle sheath, thickness of mesophyll, diameter of trakea in midrib. On the other hand, V.tricolor grew in southern slope of Mount Merapi has less value of the thickness of periderm, the number of stem vessel, stomatal index of upper and lower epidermis, as well as percentage of mychorriza infection compare to V.tricolor grew in western slope of Mount Lawu.