Judul: Penapisan Galur-galur Padi (Oryza sativa L.) Populasi RIL F7 Hasil Persilangan antara Varietas IR64 dan Hawara Bunar terhadap Cekaman Besi
Abstrak: Utilization of marginal lands such as tidal land should be done to increase rice production. The main constraints hampered rice cultivation in that area are low soil fertility, soil acidity and Fe toxicity. Fe-tolerant varities are needed to overcome those problems. Screening for Fe-tolerant character of 300 rice lines from the F7 RIL population derived from a cross between rice var. IR64 and genotype Hawara Bunar using hydroponic technique under 750 ppm Fe resulted 221 Fe-tolerant lines. The field test at the lowland with high Fe content in the Experimental Station of Taman Bogo, Lampung resulted 3 Fe-tolerant lines, which were IRH195, IRH548 and IRH715. Verification and optimization of Fe tolerance screening method using 3 Fe-tolerant lines, 3 Fe-sensitive lines and 6 rice varieties using hydroponic technique under 1000 ppm Fe showed consistant result with the field test result. The hydroponic technique with half concentration of Yoshida solution under 1000 ppm Fe colud be used as a screening method for Fe tolerance in rice.
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Judul: Phenotipic Variation of F7 Rice Lines Derived from a Cross between IR64 X Hawara Bunar Under Aluminum Stress.
Abstrak: Aluminum(Al) toxicity is onethe most important limiting factors for upland rice growth and production in acid soils. This study was aimedtoanalyze the diversity of phenotypes and to select an F7 rice Recombinant InbreedLines(RIL) population derived froma crossbetweenricevarietasIR64 and Hawara Bunar for Al resistance. The experiment used 300 rice lines fromthe F7 RILpopulationand 3 control varieties which were IR64 (Al-sensitive), Hawara Bunar (Al-tolerance), and Danau Gaung (Al-tolerance). The experiment was designed using Randomized Complete Block with single factor and 3 replication.The experiment carried out in 3 places; the laboratory, the greenhouse and the field. The results showed that based on Relative Root Legth (RRL) as a selection character, the 300 rice linescould be grouped into 130(43%)high Altolerant lines, 68(22.6%) moderate Al-tolerant and 102(34%)Al-sensitivelines. The green house experiment using 50 selected rice lines that were grown in Yellow Red Podzolic acid soil could select 32 lines that were Al-tolerant with good agronomic characteristics. The field experiment using 32 selected rice lines that were grown in Yellow Red Podzolic acid soil in Taman Bogo, Lampungcould select 4 lines (161, 322, 531, 699) that were tolerant to Al stress and acid soilwith good agronomic characteristics.
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Judul: Infeksi cacing Ascarid pasa anjing dan kucing, serta hubungannya sebagai zoonosis
Abstrak: Ada tiga cacing Ascarid yang didapatkan pada anjing dan kucing, yaitu Toxocara canis pada anjing, Toxocara cati pada kucing dan Toxascaris leonina pada anjing dan kucing. Ketiganya mempunyai habitat di usus kecil (Soulsby, 1982). Manusia dapat bertindak sebagai induk semang paratenik dari kelompok ini, melalui anjing dan kucing yang menderita sebagai sumber infeksi, terutama anak- anak anjing dan anak-anak kucing (Brown, 1975). Dari kelompok Ascarid ini penyebab utama penyakit pada manusia adalah Toxocara canis (Soulsby, 1982). Penyakit pada manusia yang disebabkan oleh kelompok ini dikenal sebagai penyakit 'Visceral Larva Migrans' (Brown, 1975), Toxocariasis (Beaver, 1966). Penularan pada anjing dan kucing, dapat melalui telur infektif (langsung), induk semang paratenik seperti tikus, kecos, cacing Lanah dan lain-lain (tidak langsung), intrauterin, trans-mammary dan secara fecaloral. Pada manusia, penularan terjadi melalui telur infektif yang tertelan. Gejala klinis yang tampak pada anjing dan kucing yang terinfeksi oleh kelompok ini, adalah anjing kurus, pertumbuhan terhambat, gelisah, batuk, respirasi meningkat, keluar cairan dari hidung, muntah yang kadang kadang bercampur dengan cacing, icterus, diare, sakit pada abdomen, perut buncit dan kadang-kadang timbul gejala konvulsi (Kelly, 1977). Pada manusia tanda klinis yang umum terlihat, yaitu batuk, dispnoe disertai demam dan gejala umum lainnya. Kadang-kadang endopthalmitis, retinitis perifer, papilitis, dan konvulsi. Pemeriksaan darah terlihat eosinofilia, leukositosis, hiperglobulinemia dan pemerik saan yang lain memperlihatkan hepatomegali…dst
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