Judul: Keragaan Sifat Agronomi dan Daya Hasil Hibrida Jagung (Zea mays L.) Silang Tunggal dan Silang Ganda
Abstrak: The objective of this research was to evaluate agronomic performance and yield potential of single and double crosses of maize. This research was conducted at the IPB UF Cikabayan Research Station from December 2013 to April 2014. Genetic materials evaluated were five single cross hybrids (SC), 18 double cross hybrids developed from the single crosses (DC) and five S1 genotypes. The experimental design was a single factor Randomized Complete Block Design with four replications. The results elucidated that the genotype category (SC, DC, S1) has significant effects on all traits except standing percentage, number of kernel rows, and yield percentage. Means of the single crosses are significantly better than the other two categories for stem diameter, cob length, cob diameter, and grain yield. There were some extent of genetic diversity among genotypes evaluated for all traits except yield percentage. The yield of PERTIWI3×P31 double cross was not significantly different from the best yielding single cross (P31) and therefore this double cross is considered potential for further utilization in a breeding program
Keyword: Bogor Agricultural University (IPB), single cross., hybrid maize, double cross

Judul: Evaluation of Agronomic Traits and Yield  Potential of 60 Maize Hybrids (Zea mays L.)
Abstrak: Produksi jagung nasional di Indonesia masih perlu ditingkatkan melalui pengembangan varietas-varietas unggul hibrida untuk memenuhi kebutuhan pangan, pakan, dan industri. Hibrida yang diuji perlu dilakukan evaluasi dan dibandingkan dengan varietas pembanding. Penelitian ini bertujuan mengevaluasi keragaan agronomi dan potensi hasil pada 60 hibrida uji hasil program pemuliaan IPB. Penelitian dilaksanakan pada November 2022 hingga Maret 2023 di Kebun Percobaan Leuwikopo, Bogor. Penelitian ini menggunakan rancangan augmented kelompok lengkap teracak dengan 60 genotipe dan 3 kelompok. Genotipe yang diuji meliputi 6 pembanding, yaitu BISI 18, JHG02, P21, P27, NK Perkasa, dan NK Sumo dengan tiga ulangan, serta 60 hibrida uji tanpa ulangan. Terdapat keragaman genotipe uji jagung pada seluruh peubah pengamatan, kecuali umur berbunga jantan, umur berbunga betina, umur panen, dan jumlah tongkol per tanaman. Semua peubah kuantitatif yang diamati memiliki nilai heritabilitas arti luas yang tinggi, kecuali umur berbunga jantan dan jumlah tongkol per tanaman. Hibrida uji yang potensial adalah H1 x L27, P42 x L23, L15 x L53, L68A x H1, MR14 x B1, P42 x L27, L15 x B4B, B4 x L23, B4 x B1, Nei x P2, P10 x L152, P42 x P10, L15 x Nei, dan L68B x B4B. Produksi hibrida uji tertinggi P42 x L23, National production of maize in Indonesia needs to be increased through the development of superior hybrid maize varieties for food, feed, and industries. The hybrid candidates need to be evaluated and compared with the check varieties. This research aimed to evaluate the agronomic performance and yield potential of 60 maize hybrids from the IPB University breeding program. This research was conducted from November 2022 to March 2023 at the Leuwikopo Experimental Station, Bogor. This study used an augmented randomized complete block design with 60 genotypes and 3 blocks. The genotypes include 6 check varieties, namely BISI 18, JHG02, P21, P27, NK Perkasa, and NK Sumo with three replications, and 60 test hybrids without replication. The genotype effect was significant for all traits observed except for days to tasseling, days to silking, days to harvest, and number of ears per plant. All observed quantitative traits have a high broad-sense heritability estimate except days to taselling and number of ears per plant. The potential hybrid candidates are H1 x L27, P42 x L23, L15 x L53, L68A x H1, MR14 x B1, P42 x L27, L15 x B4B, B4 x L23, B4 x B1, Nei x P2, P10 x L152, P42 x P10, L15 x Nei, dan L68B x B4B. The test hybrid having the highest yield was P42 x L23.
Keyword: evaluation, hybrid, maize breeding, yield

Judul: Infeksi Virus Parainfluenza Pada Anjing
Abstrak: Virus parainfluenza anjing termasuk famili Paramyxoviridae, berbentuk pleomorf dengan ukuran bervariasi (bergaris tengah antara 100-500 nm), berpembungkus peka ether, berisi genom RNA dan secara serologis mempunyai kesamaan dengan virus SV-5 kera; dikenak sebagai salah satu kausa penting dari sindrom "kennel cough". Infeksinya dapat mengenai anjing semua umur yang belum pernah terinfeksi atau mendapatkan vaksinasi mengakibatkan gejala klinis ringan yang terbatas pada traktus respirasi atu infeksi yang secara klinis tidak memperlihatkan gejala nyata. Gejala klinis yang nampak setelah masa inkubasi (1-5 hari) terlewati berupa batuk yang tidak berat selama beberapa hari, berbagai tingkat tonsilitis dan pharyngitis dan kadang-kadang ditemukan kenaikan temperatur rektal antara 1-2 derajat C dari temperatur normal rat-rata. Anjing terinfeksi mengandung virus pada traktus respirasi bagian atas dan bawah serta limfonoduli sampai hari ke 9 setelah infeksi. Penyebaran virus antar anjing terjadi secara aerogen.
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