Judul: Pollen Load and it’s Viability of Oil Palm Oil on Female Weevils Elaeidobius kamerunicus Faust.
Abstrak: Salah satu faktor yang berkontribusi dalam peningkatan produksi tanaman kelapa sawit ialah penyerbukan yang efektif oleh E. kamerunicus. Efisiensi penyerbukan oleh kumbang sangat tergantung pada kemampuan kumbang mentransfer polen dari bunga jantan anthesis ke bunga reseptif. Penelitian ini bertujuan mempelajari jumlah dan viabilitas polen kelapa sawit yang menempel pada tubuh kumbang betina E. kamerunicus. Penelitian ini meliputi beberapa tahap, yaitu pelepasan dan penghitungan jumlah polen kelapa sawit yang menempel pada tubuh kumbang betina, penyusunan peta polen, dan pengukuran viabilitas polen. Total polen yang menempel pada tubuh kumbang dan jumlah polen pada beberapa bagian tubuh kumbang ditampilkan dalam tabel dan grafik batang dengan software SigmaPlot versi 11.0. Viabilitas polen diukur dari persentase polen yang berkecambah. Hasil penelitian menunjukkan bahwa rata-rata polen yang dibawa oleh kumbang betina E. kamerunicus ialah 1.567 butir polen. Jumlah polen paling banyak ditemukan pada bagian sayap (elytra). Viabilitas polen yang dibawa kumbang betina ialah 76,23 %. Rata-rata panjang polen yang didapat ialah 39,9 μm dan lebar rata-ratanya 34,1 μm. Tabung polen yang terbentuk panjangnya berkisar 60-890 μm. Polen yang diamati memiliki struktur trikolpata
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Judul: Jumlah Polen Kelapa Sawit dan Viabilitasnya pada Tubuh Kumbang Jantan Elaeidobius kamerunicus Faust.
Abstrak: Elaeidobius kamerunicus Faust. is a weevil pollinator of oil palm. These weevil transfer pollen from male to female inflorescences of oil palm (Elaeis guineensis). The aim of the research were to study pollen load and its viability on male weevils E. kamerunicus as a pollinator of oil palm. Male weevil E. kamerunicus was submerged in etanol 70% : gliserol (4:1) solution and was rotated during 24 hours. After those, weevil was outed, the solution was sentrifugated and pollen in each individual weevil was counted with haemacytometer. Other weevils were immobilized by ethyl acetate were counted of pollen loads in each body of the weevil. To measure viability pollen, were germinated in sucrose 8% and boric acid 15 ppm solution and were counted its viability after 2 hours of treatment. Result showed that male weevil E. kamerunicus carried 3258 pollen grains. Most pollen grains were carried by weevil in the elytra (1067 pollen grains), head (495 pollen grains), and abdomen (296 pollen grains), respectively. Less pollen (27 pollen grains) attached in antenna. The pollen shape of oil palm is triangel with aperture type, that is tricolpata, 38 μm in long and 30 μm in wide. In the germination process, pollen tube’s long between was 60 μm-700 μm. Pollen viability carried by male weevils was 74,18%.
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Judul: Implementation of Spatio-Temporal Change Query in Relational Database.
Abstrak: Geographic object changes in various views. Object changes are recorded using a model of static storage. No historical connection between old version data and new version data has been built. For that, a storage model of spatio-temporal queries that can analyze spatio-temporal changes has been developed. The object changes the geometry are grouped according to the taxonomy of Spatio-Temporal Pattern Change. This research has been able to apply the query patterns change including born, expand, merge, contract, split, normal and die. This query based on geometric (area) changes. The implementation of spatio-temporal change queries represents an object changes continuously with easy, change detection is done by comparing two versions of data. Keyword: spatio-temporal change query, spatio-temporal change pattern.
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