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Abstrak (Bhs. Indonesia)

Penelitian ini bertujuan untuk : (1) mendapatkan suhu zone cooling yang terbaik terhadap pertumbuhan dan hasil benih kentang dengan sistem aeroponik di dataran rendah, (2) mengetahui pertumbuhan dan hasil benih kentang yang terbaik pada suhu yang berbeda pada setiap varietasnya dengan sistem aeroponik di dataran rendah dan (3) mengkaji pengaruh kombinasi varietas dan suhu terhadap hasil kentang dengan sistem aeroponik di dataran rendah. Penelitian dilaksanakan di rumah kaca Laboratorium Pemuliaan Bioteknologi Tanaman Fakultas Pertanian, Universitas Jenderal Soedirman, Karangwangkal, Purwoketo. Penelitian ini berlangsung empat bulan dan dilaksanakan pada bulan Oktober 2013 sampai dengan Januari 2014. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) pola faktorial, dengan tiga kali ulangan yang terdiri dari 2 faktor. Faktor pertama adalah suhu yaitu : kontrol (suhu ruang), 15 °C dan 20 °C. Faktor kedua adalah varietas yaitu : Varietas Atlantik dan Varietas Granola. Variabel pengamatan yaitu : tinggi tanaman, jumlah daun, panjang akar, bobot segar tanaman, bobot kering tanaman, bobot segar akar, bobot kering akar, bobot umbi per tanaman, jumlah umbi per tanaman dan diameter umbi. Data hasil pengamatan dianalisis dengan uji F, apabila hasil penghitungan statistikanya terdapat perbedaan nyata dilanjutkan dengan Uji Jarak Ganda Duncan (UJGD) pada taraf 5%. Hasil penelitian menunjukkan bahwa pengaruh suhu zone cooling terhadap pertumbuhan kentang berpengaruh nyata terhadap jumlah daun tanaman kentang dan pengaruh suhu zone cooling terhadap hasil tanaman kentang berpengaruh nyata terhadap semua variabel hasil tanaman kentang. Namun, aplikasinya terhadap penggunaan varietas kentang tidak berpengaruh nyata terhadap tinggi tanaman dan jumlah umbi per tanaman.  Adanya interaksi antara suhu zone cooling dan varietas tanaman kentang terhadap bobot segar tanaman, bobot segar dan bobot kering akar, bobot umbi per tanaman, dan diameter umbi.

Abtrak (Bhs. Inggris)

The purposes of this research are : (1) to get the best cooling zone temperature on the growth and yield of seed potatoes to the aeroponic system in the lowland, (2) to determine growth and yield of the best seed potatoes at different temperatures on each of varieties with an aeroponic system in the lowland and (3) to assess the combination af variety and temperature on the results of potato with aeroponic system in the lowland. The research was conducted in the greenhouse Breeding Laboratory of Plant Biotechnology, Faculty of Agriculture, University of Jenderal Soedirman, Karangwangkal, Purwoketo. This research is passed off four months and implemented in October 2013 to January 2014. This research uses a Completed Randomized Block Design factorial model, with three replications consisting of two factors. First factor is the temperature, namely: control (room temperature), 15 °C and 20 °C. Second factor is the variety which are: Variety of the Atlantic and Granola variety. The observation variable i.e plant height, number of leaf, root length, fresh weight of plants, plant dry weight, root fresh weight, dry weight of root, tuber weight per plant, number of tubers per plant and tuber. The data were analyzed by F test, if the result of its statistical calculation there are real differences continued with Duncan Multiple Range Test at 5% level. The result shows that the cooling zone temperature effect on the growth of potato has significantly effect to the number of leaves of potato plants and cooling zone temperature effects on crop yield of potato has significantly effect to potato crops all outcome variables. However, its application to the use of varieties of potato has not significantly effect to plants height and the number of tubers per plant. There is interaction between the temperature of the cooling zone and the potato crop variety to plant fresh weight, fresh weight and dry weight of root, tuber weight per plant, and the diameter of the bulb.

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