Judul: Respon morfologis dan fisiologis bibit berbagai genotipe jarak pagar ( Jatropha curcas L.) terhadap cekaman kekeringan
Abstrak: Tanaman jarak pagar merupakan tanaman tahunan yang tahan kekeringan. Jarak pagar dapat beradaptasi pada lahan ataupun agroklimat di Indonesia bahkan tanaman ini dapat tumbuh baik pada lahan dengan tingkat kesuburan rendah (lahan kritis). Budidaya tanaman jarak pagar sebaiknya lebih difokuskan ke lahan kering agar tidak berkompetisi dengan budidaya tanaman pangan, sehingga pengembangan tanaman jarak yang paling sesuai untuk dilakukan yaitu di lahan marginal seperti di wilayah Indonesia Timur. Penelitian ini bertujuan untuk: (1) mempelajari respon morfologis dan fisiologis bibit berbagai genotipe tanaman jarak pagar terhadap cekaman kekeringan dan (2) mendapatkan informasi toleransi terhadap kekeringan masing-masing genotipe yang digunakan. Penelitian ini dilaksanakan di rumah kaca Laboratorium Ilmu dan Teknologi Benih Leuwikopo. Analisis fisiologis dan morfologis di laboratorium Ekofisiologi dan RGCI, Departemen Agronomi dan Hortikultura, Fakultas Pertanian, Institut Pertanian Bogor, pada bulan Juli sampai dengan November 2007. Rancangan yang digunakan adalah rancangan petak terbagi (split plot) dengan tiga ulangan. Faktor pertama, sebagai petak utama adalah kadar air media terdiri atas K1 : kadar air media 40%, K2 : kadar air media 36%, K3 : kadar air media 32%. Faktor kedua, sebagai anak petak adalah genotipe terdiri atas A1 : Karanganyar, A2 : Sukabumi, A3 : NTB, A4 : IP-1P, A5 : IP-1M dan A6 : IP - 1A. Peubah morfologis yang diamati adalah tinggi tanaman, luas daun, ketebalan daun, jumlah stomata terbuka, defisit air, bobot kering pucuk, bobot kering akar, ratio pucuk akar, panjang akar dan volume akar, sedangkan peubah fisiologi yang diamati adalah kadar air daun, laju asimilasi bersih, kandungan klorofil, kandungan karbon dan kandungan prolin. Data dianalisis dengan menggunakan SAS, bila berpengaruh nyata dilanjutkan dengan uji Duncan pada taraf 5%.
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Judul: Respon Morfologi dan Fisiologi Aksesi Jarak Pagar (Jatropha Curcas Linn) dalam Kondisi Cekaman Kekeringan di Pembibitan
Abstrak: Jatropha (Jatropha curcas Linn) is one of the popular raw material when it comes to biodiesel fuel producing. It is often to encounter the problem where the land that is available to plant these Jatropha is the one that is marginal, so that it is important to see the tolerance of these Jatropha accessions to drought. The experiment was conducted in one of the Green House in Cikabayan, Darmaga IPB while the chlorophyll test was conducted in Molecular Marker, Spectrophotometer, and UV-Vis laboratory that is owned by Agronomy and Horticulture Department, Faculty of Agricultural, Bogor Agricultural Institute. The Research was started in July 2011 and ended in March 2012. The experimental design that was used in this experiment is factorial randomized block design. The first factor that was observed is the tolerance to the drought that was done in three degree which was 30%, 55%, and 80% of soil water content in the experimental field capacity. The second factor that was observed were 10 Jathropa accessions which have been evaluated, they were IP-3M, Jatim 013, Jatim 045, NTT 065,NTT 080, NTB 019, NTB 047, NTB 116, Sulawesi 72 and Sulawesi 117. Based on the a and b chlorophyll test that have been conducted Jatim 045 accessions signify the best result of treatment (the highest tolerance to drought). While from the scoring test the highest tolerance to drought in between 35% and 80% soil water content is shown by the NTT 065 accessions and the highest tolerance to drought in between 55% and 80% soil water content is shown by the Jatim 045 and NTB 047 accessions. There is no interaction occurs to both of the factors that were tested.
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Judul: Grup dan Homomorfisma Grup pada Rubik Revenge
Abstrak: Rubik cube is a kind of puzzle game. A player must arrange rubik sides, which have been disordered, back to the position where every side has the same colour. This paper does not focus on the settlement solution, but instead on proving the existence of a group homomorphism between rubik movement group and S96 symmetric permutation group in rubik revenge. Firstly, it has been proved that rubik movement set is a group. Then, it also has been proved that the M set, which contains numeric labels of 1 until 96 in cubinos sides, is S96 symmetric permutation group.
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