Hasil Pencarian  ::  Simpan CSV :: Kembali

Abstrak :
ABSTRAK
Clitoria ternatea L., or commonly known as butterfly pea, from the family of Fabaceae, is a perennial medicinal plant. Its flower which is deep blue or white in colour is commonly used as a natural food colorant. the plant originates from tropical Asia and known to possess essential bioactive compounds where the extracts from its roots, leaves and seeds are used in the phytochemical, pharmacological and clinical investigations for therapeutic drug development. The root extracts have been reported to exhibit analgesic, anti-pyretic, anxiolytic, anti-depressant, anti-convulsant, anti-stress, anti-diarrheal, anti- asthmatic and most importantly, in the treatment of central nervous system disorders. The root extracts have shown memory enhancing properties in neonatal rats. The aim of the study was to induce roots from the seedling explants of Clitoria ternatea L. for the establishment of a root suspension culture system that could function as efficient alternative to the ex- vitro plants from the soil for harvesting of medicinal secondary metabolites. the sterilized seeds of Clitoria ternatea L. were germinated on half-strength Murashige and Skoog (MS) medium, and the cotyledon and hypocotyl from the 7 - 8 days old seedlings were placed in the media supplemented with indole-3-butyric acid (IBA) and 1-naphthaleneacetic acid (NAA) at different concentrations. It was evident that NAA was the potential growth hormone for root induction in Clitoria ternatea L. the cotyledon explants cultured on MS medium supplemented with 2 mg/L NAA produced the highest percentage of root induction (70%) while 1 mg/L NAA produced the highest average number of roots from cotyledon explants. the study provided an efficient protocol for the induction of roots and callus from Clitoria ternatea L.

Abstrak :
ABSTRACT
Leaf borer moth of Artona flavipuncta was a perennial pest of Bali Botanic Garden Zingiberaceae collection. This paper aims to discuss A. flavipuncta attack status as well as its life cycle and control attempts, both that already and potentially used in Bali Botanic Garden. This paper concluded that A. flavipuncta attack 54,5% of all Zingiberaceae species collected in Bali Botanic Garden. Its larval activity causes severe leaves damage but never caused plant mortality. Decis 2.5 EC insecticide was used to control this pest, but natural enemy control using assassin bug could be considered as alternative control method in the future.

Abstrak :
ABSTRACT
Phylogenetic taxonomy or cladistics is a classification system based on evolutionary history of an organism with other organisms, so that the process of evolution can be reconstructed. The main principle of the classification system is that only the unique characters of the adjacent group owned by descendants of an ancestor that was used in classifying organisms and secondly the reconstruction is based on group monophyly. So, the purpose of the use of this method is to classify organism and reconstruct the phylogenetic relationship based on the character encoding. Similarities and differences in the characters shown by a certain code lead to a tracing ancestors of each species. Several methods to reconstruct the phylogeny tree using qualitative data base are Maximum Parsimony and Maximum Likelihood. Study phylogeny based on morphological characters has a fundamental weakness which ultimately requires molecular characters to cover up these weaknesses.

Abstrak :
ABSTRAK
Telah dilakukan penelitian yang bertujuan untuk menjelaskan struktur komunitas dan melengkapi data mengenai famili Asteraceae di Kampus Universitas Indonesia UI. Penelitian dilakukan selama bulan September dan Oktober 2017. Lokasi pengambilan sampel dibagi menjadi tujuh kompartemen dengan membuat petak berukuran 1x1 meter sebanyak seratus plot menggunakan metode purposive sampling. Data yang diperoleh berupa kehadiran dan diameter tutupan tiap spesies Asteraceae. Berdasarkan hasil penelitian ditemukan empat belas spesies Asteraceae. Spesies yang ditemukan di kompartemen 1 hingga 7 masing-masing terdiri dari 10 spesies, 9 spesies, 10 spesies, 11 spesies, 8 spesies, 7 spesies, dan 8 spesies. Berdasarkan nilai INP, Mikania micrantha mendominasi hanya pada kompartemen 2 dengan nilai INP sebesar 39,56. Synedrella nodiflora mendominasi pada kompartemen 1, 4, dan 5 dengan nilai masing-masing sebesar 50,28, 34,89, dan 59,08. Sedangkan, Tridax procumbens mendominasi pada kompartemen 3, 6, dan 7 dengan nilai masing-masing sebesar 64,02, 66,47, dan 59,29. Secara keseluruhan, ketujuh kompartemen memiliki indeks keanekaragaman yang rendah hingga sedang H 1,41-2,03, tingkat kemerataan yang tinggi E 0,67-0,84, dan tingkat dominansi yang rendah D 0,14-0,27.

---

ABSTRACT<>br> Research on the community structure of Asteraceae family in Universitas Indonesia UI campus has been done. The study was conducted during September to October 2017. A hundred plots sampling with a size of 1 x 1 meter was made purposively on seven compartments that became the sampling location. The data obtained are the presence and coverage area of each species. The total species of Asteraceae found were fourteen. Each compartment has a different number of species. Species found in compartment 1-7 were ten, nine, ten, eleven, eight, seven, and eight species respectively. Based on IVI values, Mikania micrantha dominates only in compartment 2 with an IVI value of 39.56. Synedrella nodiflora dominates in compartments 1, 4, and 5 with IVI values of 50.28, 34.89, and 59.08, respectively. Meanwhile, Tridax procumbens dominates in compartments 3, 6, and 7 with IVI values of 64.02, 66.47, and 59.29 respectively. Overall, the seven compartments had a low to moderate level of diversity H 39 1.41 2.03, high level of evenness E 0.67 0.84, and low level of dominance D 0.14 0.27.

Abstrak :
Plant communities have been attracting many scientists due to their complexity and unclear underlying mechanisms that support it. How large numbers of competing plant species manage to coexist, for instance, is one of the major unresolved questions in plant community ecology. Ecological niche concept is a classical theory which tries to address this question. The development of this concept will be presented in this paper. Recent studies, although few in number and incomplete in many ways, do suggest that plants segregate along various environmental niche axes. Although it is unlikely that niche separation along environmental axes is the only mechanism of coexistence in any large community, the evidence now suggests that ecological niche concept plays a more significant role than has been previously appreciated.