Pengaruh Asam Indol Asetat terhadap Pertumbuhan, Jumlah dan Diameter Sel Sekretori Rimpang Tanaman Kunyit (Curcuma domestica Val.)

The aims the research were to study the influence of indol acetic acid (IAA) on growth, quantity and diameter of secretory cells of Curcuma domestica rhizome. Indol acetic acid has ability to stimulate division, enlargement and differentiation of parenchym cell. Completely randomized design (CRD) with one factor of IAA application with concentration of 0, 100, 200, and 300 ppm subsequently in with triplicate was used in this study. The first application given when the plant was one month age, and then given once every two weeks until the plant was four months age. Parameters of growth including height, quantity and width of leaves were observed once every two week. The last observation was done for wet and dry weight of plant and rhizome. Anatomic parameter was done by preparing a semi- permanent preparat, and continued with observation of quantity and diameter of the secretory cells. Datas were then analyzed statistically by Anova followed with DMRT in 5% confidence level. The results indicated that IAA significantly influence plant height, leave width, plant weight at 200 ppm. Higher concentration of IAA raised the quantities of secretory cells, but decrease secretory cells diameters. Keywords: indol acetic acid, Curcuma domestica, growth, secretory cell

Studies on Morphological and Phylogenetic Relationship of Salak Pondoh Varieties (Salacca zalacca (Gaert.) Voss.) at Sleman Highlands

The objectives of the study were to know the morphological variation of salak-plants (Salacca zalacca (Gaert.) Voss. and their relationship. The study was conducted in May to April 2000, at Turi and Pakem of Sleman district, Yogyakarta. Samples were randomly taken, 5 plants of each variety were studied their morphological characters such as stem, leaf, flower and fruit. The data collected were then analyzed descriptive comparatively and their relationships were then determined. The result of the study indicate that there were at least 8 varieties of salak at Sleman district, green-, black-, yellow-, manggala-, red-yellow-, golden-, red-, and red-black pondoh. Morphological differences among varieties were markedly different. The closest relationship was found between variety of red-black- and black pondoh, while the farthest relationship among the varieties was manggala pondoh