Judul: Development of Rapid Viability and Vigor Test Using Urine Sugar Analysis Paper of Common Bean (Phaseolos vulgaris) Seeds
Abstrak: Seed quality testing needs to be done quickly, simply, and accurately because seeds quickly decline. The aim of the study was to develop a rapid test method for viability and vigor of chickpea seeds usingurine sugar analysis paper(WIPE). Experiments were carried out on 2 varieties of Baguz and Maxipro beans separately, consisting of the same 2 stages. The first stage, the manufacture of seed lots with rapid physical aging at a temperature of 40 oC and humidity >90%, was arranged using a Completely Randomized Design (CRD) with an aging factor consisting of 5 levels: 0, 24, 48, 72, and 96 hours. . The second stage, the development of seed viability and vigor test using USAP through optimization of soaking time of 4, 8, and 12 hours. Regression analysis was carried out to see the relationship between viability and vigor (x) and color change in USAP (y), with the equation y = a+bx. Viability testing using USAP was effective for the Baguz variety, but not for Maxipro. Glucose testing on the Baguz variety was effective at 4 hours of immersion. Protein testing is effective at 4 and 8 hours of immersion, but showed optimal results at 12 hours of immersion. Glucose testing on Maxipro only differentiated damaged seeds from live seeds at 8 hours of immersion. The protein in Maxipro was not detected because the USAP strip changes did not match. Seed quality does not affect the pH value.
Keyword: Glucose, Accelerated aging, pH, Protein, USAP

Judul: Development of Rapid Viability and Vigor Test Methods for Corn (Zea mays L.) Seeds Using Urine Sugar Analysis Paper
Abstrak: Urine sugar analysis paper (USAP) telah digunakan untuk uji cepat viabilitas dan vigor benih kedelai berdasarkan terdeteksinya bocoran protein di dalam air rendaman benih. Penelitian bertujuan mengembangkan metode uji cepat viabilitas dan vigor benih jagung menggunakan USAP dengan mendeteksi bocoran glukosa, protein, dan perubahan pH pada berbagai tingkat viabilitas dan vigor. Tahap pertama penelitian ini adalah pembuatan lot benih dengan tiga bulan penyimpanan, disusun menggunakan rancangan acak lengkap (RAL) satu faktor yaitu kemasan benih (plastik polypropylene, plastik polyethylene, kertas amplop coklat, dan tanpa kemasan). Tahap kedua adalah uji kebocoran glukosa, protein dan perubahan pH menggunakan USAP. Percobaan menggunakan RAL satu faktor, 12 kombinasi perlakuan yaitu kondisi benih (utuh, dibelah dua, dan dihaluskan) dengan lama perendaman (0, 6, 9, dan 12 jam). Hasil tahap pertama dan tahap kedua dianalisis menggunakan analisis regresi linier sederhana dan uji korelasi untuk mengetahui hubungan antara keduanya. Hasil penelitian menunjukkan USAP mampu mendeteksi bocoran glukosa pada perlakuan benih dibelah dua dan dihaluskan pada semua lama perendaman, namun tidak dapat membedakan tingkat viabilitas dan vigor benih. Indikator bocoran protein dan perubahan pH tidak terdeteksi sehingga tidak dapat membedakan tingkat viabilitas dan vigor benih., Urine sugar analysis paper (USAP) has been used to test the viability and vigor of soybean seeds based on detection of protein leakage in the seed’s soaking water. The research aimed to develop a rapid viability and vigor test method for corn seeds using USAP by detecting leaks of glucose, protein and changes in pH at various levels of viability and vigor. The first stage of this research was making seed lots with three months of storage, arranged using a completely randomized design (CRD) with one factor, namely seed packaging (polypropylene plastic, polyethylene plastic, brown envelope paper, and without packaging). The second stage was testing for glucose and protein leakage and changes in pH using USAP. The experiment used a CRD with one factor, consisted of 12 treatment combinations, namely seed conditions (intact, halved, and crushed) with different soaking durations (0, 6, 9, and 12 hours). The results of the first and second stages were analyzed using simple linear regression analysis and correlation tests to determine the relationship between them. The results showed that USAP could detect glucose leakage in the halved and crushed seed treatments at all soaking durations but could not differentiate between seed viability and vigor levels. The indicators of protein leakage and pH changes were not detected thus could not distinguish seed viability and vigor levels.
Keyword: glucose, protein, seed lot, seed storage, soaking time

Judul: Formulasi Hamiltonian untuk Menggambarkan Gerak Gelombang Soliter Dimensi Tiga di Permukaan Laut
Abstrak: Gelombang permukaan adalah gelombang yang terjadi perbedaan rapat massa antara air dan udara. Salah satu gelombang permukaan yang ditinjau adalah gelombang soliter. Formulasi gelombang soliter dilakukan dengan menggunakan formulasi Hamiltonian.
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