Judul: Pendugaan Nilai Heterosis Genotipe F1 Sorgum (Sorghum bicolor (L.) Moench) Hasil Persilangan Line × Tester.
Abstrak: The objectives of this research were to evaluate performance and to estimate general combining ability, specific combining ability and heterosis in F1 genotypes of sorghum were crossed in a line × tester mating design. The experiment was conducted at Leuwikopo Experimental Farm, Bogor Agricultural University, Dramaga, Bogor from January to April 2014. The experiment was conducted in a Completly Randominzed Design, in three replications. The result of analysis of variance showed high significant difference for all variables used. Based on GCA effects the line P/I 150-20-A and tester Kawali was a good combiner for plant height character. Line P/I 150-21-A and tester Numbu was a good combiner for weight of grains character. The hybrid combinations of P/I 150-20-A × Kawali was recorded as the best specific combiner for height character and B-69 × Numbu was recorded as the best specific combiner for weight of grains character. Among the hybrids, P/I 150-20-A × Kawali was recorded minimum plaint height with 5.30, -11.86 % heterosis over the mid parent and better parent and B-69 × Numbu was recorded maximum weight of grains with 72.02, 33.46 % heterosis over the mid parent and better parent.
Keyword: SCA, heterobeltiosis, heterosis, GCA

Judul: Keragaan Karakter Agronomi dan Keberhasilan Persilangan Galur-galur Sorgum (Sorghum bicolor (L.) Moench)
Abstrak: The objectives of this experiment were to determine the performance character of the parental lines and crossing ability of sorghum (Sorghum bicolor (L.) Moench) lines. This research was carried out in the Leuwikopo Experimental Farm, Bogor Agricultural University, Dramaga, Bogor and started from February 2013 to July 2013. This experiment was arranged by two sebdivission. The first experiment was arranged in a randomized complete block design with one factor and three replications, and the second was arranged in line x tester crossing methode. Performance of agronomic traits of the parental lines showed significant differences with Numbu and Kawali varieties in all variables, except the germination variable. Performance of yield comoponent in sorghum lines showed significant differences with Numbu and Kawali varieties, especially on the character length of panicle and thousand grain weight. The results showed a positive correlation between agronomic characters and yield component. The results showed that the cross compatibility introduced lines was higher than IPB breeding lines and mutant lines of sorghum. The successful at the each lines did not indicate correlation of the climate components
Keyword: yield component, hybridization, agronomy character

Judul: Distribusi spasial kima (Tridacnidae) dan hubungannya dengan kondisi ekologis terumbu karang di Kepulauan Karimunjawa, Jawa Tengah
Abstrak: Indonesia dengan luas lautan 6.87 juta km² memiliki keanekaragaman hayati laut yang kaya, terutama ekosistem terumbu karang dengan luas kurang lebih 50.000 km². Berdasarkan perkiraan, 70 % terumbu karang dunia akan rusak dan hilang pada 10 sampai 40 tahun mendatang akibat dari perubahan iklim global. Kima dari famili Tridacnidae sebagai salah satu penyusun utama terumbu karang merupakan jenis bivalvia berukuran relatif besar yang distribusinya terbatas hanya di daerah ekosistem terumbu karang Indo-Pasifik. Pada beberapa dekade terakhir, kima telah mengalami eksploitasi besar-besaran. Eksploitasi kima secara besar-besaran dapat menyebabkan kepunahan biota kima tersebut dan mengakibatkan kerusakan terumbu karang yang hidup juga (Pasaribu, 1988). Oleh karena itu pemerintah mengumumkan ketujuh kima yang ada di Indonesia sebagai biota laut yang dilindungi berdasarkan Surat Keputusan Menteri Kehutanan no. 12/Kpts - II/1987. Tiga spesies kima (Tridacna gigas, T. derasa dan Hippopus porcellanus) yang dahulu melimpah di seluruh Indonesia kini telah berkurang secara mencolok. Penelitian singkat atas populasi kima di Kepulauan Seribu dan Kepulauan Karimunjawa menunjukkan bahwa T. gigas dan T. derasa telah punah. Spesies­ spesies lainnya, T.crocea, T. squamosa dan Hhippopus, masih ditemukan namun telah mengalami penurunan populasi.
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