Judul: Performance evaluation of two IPB sunflower (Helianthus annuus L.) genotypes
Abstrak: Tanaman hias merupakan komoditas dengan prospek penjualan dan nilai komersial tinggi, salah satunya adalah bunga matahari. Bunga matahari (Helianthus annuus L.) merupakan tanaman yang dapat dibudidayakan sebagai penghasil minyak, makanan, dan tanaman hias. Varietas bunga matahari yang dilepas oleh kementerian pertanian masih sangat minim, hal ini mendorong pemulia untuk menciptakan bunga matahari dengan karakter unggul, keragaan unik, dan stabil untuk diupayakan sebagai varietas unggul. Penelitian ini bertujuan untuk mengevaluasi keragaan dari dua genotipe bunga matahari hasil pemuliaan IPB. Penelitian dilaksanakan pada bulan Januari hingga Mei 2021 di Sukowati, Bojonegoro. Penelitian ini menggunakan rancangan kelompok lengkap teracak (RKLT) satu faktor, yaitu genotipe bunga matahari (IPB BM2, IPB BM3, IPB BM1, Texas lemon, dan Choco sun). Lima genotipe bunga matahari yang diamati menunjukkan bahwa genotipe berpengaruh nyata terhadap seluruh karakter kuantitatif. Genotipe uji BM2 dan BM3 memiliki percabangan dan jumlah bunga lebih banyak dengan hari berbunga 63-65 hari, serta memiliki keragaan bunga yang berbeda dengan varietas pembanding, sehingga berpotensi untuk dikembangkan dan diupayakan untuk dirilis sebagai varietas unggul., Ornamental plants are commodities with high sales prospects and commercial value, including sunflower. Sunflower (Helianthus annuus L.) can be cultivated with the purpose for oil production, confectionary, or ornamental plants. The variety of sunflower released by the Ministry of Agriculture is still limited. This encourages breeders to create sunflowers with superior characters, unique and stable performances to be used as superior varieties. This study aimed to evaluate the performance of two sunflower genotypes from IPB Plant Breeding Division. The research was conducted from January to May 2021 in Sukowati, Bojonegoro. This study used a randomized complete block design (RCBD) with one factor, namely sunflower genotypes (IPB BM2, IPB BM3, IPB BM1, Texas lemon, and Choco sun). The results of the analysis of variance toward the five genotypes of sunflower showed that genotype had a significant effect on all quantitative characters. The genotypes of IPB BM2 and IPB BM3 had more branches and flowers blooms with 63-65 days of flowering. They have different flower performances from the comparison varieties. Therefore, they are very potential to be developed and attempted to be released as superior varieties.
Keyword: characterization, morphology, performance, superior varieties

Judul: Performance Evaluation and Yield Power on the IPB Purple Hybrid Sweet Corn (Zea mays saccharata Sturt).
Abstrak: Jagung manis (Zea mays saccharata Sturt) atau sweet corn merupakan komoditas hortikultura yang banyak digemari. Perakitan varietas jagung manis ungu perlu terus dilakukan untuk mendukung peningkatan produktivitas jagung manis dan progam biofortifikasi pangan. Institut Pertanian Bogor memiliki beberapa galur hibrida jagung manis ungu yang belum diuji keunggulannya. Penelitian ini bertujuan mengetahui keunggulan calon varietas jagung manis ungu IPB. Penelitian dilakukan bulan Oktober-Januari di kebun Percobaan PKHT IPB Pasir Kuda. Penelitian terdiri atas 1 faktor yaitu genotipe (1 genotipe uji dan 3 varietas komersil). Penanaman menggunakan rancangan kelompok lengkap teracak yang terdiri atas 4 ulangan. Hasil penelitian menunjukkan bahwa produktivitas genotipe uji JMU H1 IPB lebih rendah dibandingkan varietas pembanding. Padatan terlarut total genotipe uji setara dengan varietas pembanding potensial digunakan sebagai penciri utama genotipe JMU H1 IPB yaitu adanya antosianin yang kuat pada tulang daun, ruas batang, akar penyangga, selain dasar bunga jantan, pada rambut bunga betina, dan warna kelobot yang merah keunguan (N79 C)., Sweet corn (Zea mays saccharata Sturt) is a popular horticultural commodity. The assembly of IPB purple sweet corn varieties needs to continue to support to increase sweet corn productivity and the food biofortification program. The Bogor Agricultural Institute has several hybrid lines of purple sweet corn which superiority character has not been tested. This research was aimed to determine the superiority of the candidate of IPB purple sweet corn variety. Observations were carried out in October-January at the PKHT IPB Pasir Kuda Experimental Garden. The research consisted of 1 factor, namely genotype (1 test genotype and 3 commercial varieties). The experimental design was arranged in randomized complete group design consisting of 4 replications. The results showed that the productivity of the JMU H1 IPB genotype was lower than the comparison variety. The sugar content of total soluble solids of JMU H1 IPB were equivalent than the comparison variety. Characters that have the potential to be used as the main characteristics of the JMU H1 IPB genotype are the presence of strong anthocyanins in the leaf veins, stem segments, supporting roots, apart from the base of the male flowers, the hairs of the female flowers, and the purplish red color of the husks (N79 C).
Keyword: antosianin, biofortifikasi, hibrida, jagung manis, varietas unggul

Judul: Metrik Einstein (Anti-) Self-Dual Berdimensi Empat dengan Metode Cartan
Abstrak: Gravitational field equation can be formulated in differential forms (differential geometry), which describes gravity as a manifestation of the curvature of space-time. Curvature of space-time is characterized by a metric that satisfies the gravitational field equation. With differential forms it can be formulated the (anti-) self-dual Einstein equation, which is a modification of the Cartan structure in (anti-) self-dual basis. Calculation of (anti-) self-dual metric with (anti-) self-dual Einstein equation is simpler than the calculation using Christoffel symbols.
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