Judul: Growth and Flower Yield of African Marigold (Tagetes erecta L.) under Different Pinching Frequencies and Fertilizer Types
Abstrak: Penelitian terkait pengaruh frekuensi pinching (setiap 2, 4 dan 6 hari) serta jenis pupuk (AB Mix dan NPK + Gandasil) terhadap pertumbuhan dan produksi marigold dilakukan di Kebun Percobaan CV. Benih Dramaga pada bulan Maret Juli 2023. Sebanyak tiga percobaan dilakukan secara terpisah berdasarkan bahan tanam, yaitu stek var. Sudamala Oranye 1 serta stek dan benih var. Maharani F1. Percobaan menggunakan stek dilakukan dengan Rancangan Kelompok Lengkap Teracak (RKLT) faktorial dua faktor yaitu frekuensi pinching serta jenis pupuk, benih dilakukan menggunakan RKLT dengan faktor jenis pupuk. Hasil penelitian menunjukkan bahwa frekuensi pinching berpengaruh nyata terhadap persentase tanaman berbunga, diameter serta bobot kuntum Sudamala Oranye 1. Jenis pupuk berpengaruh nyata terhadap persentase tanaman berbunga, warna daun dan mahkota bunga kedua varietas, persentase tanaman terserang layu bakteri Sudamala Oranye 1, serta jumlah tunas per minggu, total cabang baru, bobot segar bunga per tanaman, dan produktivitas Maharani F1 dari benih. Interaksi ditemukan pada jumlah tunas 5 dan 6 MST, total tunas baru per tanaman, dan diameter kuntum Sudamala Oranye 1. Pada kedua varietas, pinching 2 hari sekali menghasilkan komponen hasil tertinggi walaupun tidak berbeda nyata dengan frekuensi pinching lainnya. Sudamala Oranye 1 memiliki produksi tertinggi dengan pemberian AB Mix, sedangkan Maharani F1 pada aplikasi pupuk NPK + Gandasil., A research was conducted at CV. Benih Dramaga from March to July 2023 to study the effect of different pinching frequencies (every 2, 4 and 6 days) and fertilizer types (AB Mix and NPK + Gandasil) on marigold growth and flower yield. Three separate experiments were carried out based on planting material, namely cuttings of var. Sudamala Oranye 1, as well as cuttings and seeds of var. Maharani F1. The field experiments for cutting were carried out as factorial randomized block design (RCBD) with three replications in all possible combinations, while from seed used RCBD with seven replications and fertilizer types as the factor. The results revealed that pinching frequency significantly influenced the percentage of yielding plants, also diameter and fresh weight of individual flower of Sudamala Oranye 1. Fertilizer type significantly affected the percentage of yielding plants, leaf and flower petal color of both varieties, and the percentage of bacterial wilt-infected plants in Sudamala Oranye 1. Additionally, the number of shoots per week, total new shoots, fresh weight of flower per plant, and yield per hectare of Maharani F1 were significantly impacted. Interactions were observed in some growth parameters of Sudamala Oranye 1. In both varieties, pinching every 2 days produced the highest yield components, although not significantly different from other pinching frequencies. The highest Sudamala Oranye 1 flower yield was found with application of AB Mix, while NPK + Gandasil showed the highest yield in Maharani F1.
Keyword: AB Mix, Gandasil, Frekuensi pinching, NPK, Stek marigold, Pinching frequency, Shoot cuttings of marigold

Judul: Marigold (Tagetes erecta) Callus Induction on Several In Vitro Culture Media Composition
Abstrak: ALDYNO JULIAN. Induksi Kalus Marigold (Tagetes erecta) pada Beberapa Komposisi Media Kultur In Vitro. Dibimbing oleh DEWI SUKMA dan SHANDRA AMARILLIS. Marigold merupakan tanaman dari keluarga Asteraceae yang tersebar luas di seluruh dunia dengan berbagai spesies dan biasa digunakan sebagai tanaman hias dalam pot maupun sebagai karangan bunga. Permintaan konsumen yang tinggi akan tanaman ini, menyebabkan diperlukan upaya untuk meningkatkan produksi dan kualitas. Kultur jaringan merupakan teknik perbanyakan tanaman yang efektif agar dapat menghasilkan tanaman dalam jumlah yang besar dalam waktu yang cepat, serta sifat yang sama dengan induknya. Perbanyakan dalam kultur jaringan dapat dilakukan melalui jalur organogenesis dan embriogenesis somatik. Tahap awal dari organogenesis maupun embryogenesis somatic dalam kultur jaringan adalah induksi kalus. Pemberian zat pengatur tumbuh, vitamin maupun asam amino dalam media dibutuhkan untuk mendorong inisiasi dan pertumbuhan kalus. Kalus yang terbentuk kemudian akan berkembang dan beregenerasi menjadi tanaman lengkap. Penelitian ini bertujuan mempelajari respon pertumbuhan kalus dari eksplan hipokotil marigold varietas Vanilla Gayatri pada beberapa komposisi media kultur jaringan. Penelitian dilaksanakan di Laboratorium Kultur Jaringan 1, Departemen Agronomi dan Hortikultura, Fakultas Pertanian, Institut Pertanian Bogor. Percobaan ini dilaksanakan pada bulan Januari-Maret 2020. Penelitian ini menggunakan Rancangan Kelompok Lengkap Teracak (RKLT) dengan satu faktor perlakuan. Hasil dari penelitian ini menunjukkan respon pembentukan kalus pasca perlakuan selama tiga minggu terbaik ditemukan pada komposisi media (MSO + 2 ppm BAP+ 0,5 ppm NAA + 50 ml air kelapa) + thiamin 2,0 µM + biotin 2,0 µM) dengan tekstur remah dengan warna hijau. Pengujian dan pengamatan lebih lanjut masih dibutuhkan untuk melihat kemampuan organogenesis tunas dari kalus. Kata kunci: hipokotil, kalus, kultur jaringan tanaman, vitamin, ALDYNO JULIAN. Marigold (Tagetes erecta) Callus Induction on Several In Vitro Culture Media Composition. Supervised by DEWI SUKMA and SHANDRA AMARILLIS. Marigolds are plants from the Asteraceae family that are widely distributed throughout the world with various species and are commonly used as ornamental plants in pots and as bouquets. The high consumer demand for this plant requires efforts to increase production and quality. Tissue culture is an effective plant propagation technique that can produce a large number of plants in a short time, as well as the same properties as the parent. Propagation in tissue culture can be done through organogenesis and somatic embryogenesis. The initial stage of organogenesis and somatic embryogenesis in tissue culture is callus induction. The provision of growth regulators, vitamins and amino acids in the media is needed to encourage callus initiation and growth. The callus formed will then develop and regenerate into a complete plant. This research aims to study the callus growth response of hypocotyl explants of marigold variety Vanilla Gayatri on several compositions of tissue culture media. The research was conducted at Tissue Culture Laboratory 1, Department of Agronomy and Horticulture, Faculty of Agriculture, Bogor Agricultural University. The experiment was conducted from January to March 2020. This study used a completely randomized group design (RKLT) with one treatment factor. The results of this study showed that the best callus formation response after treatment for three weeks was found in the media composition (MSO + 2 ppm BAP + 0.5 ppm
Keyword: callus, hypocotyl, plant tissue culture, vitamin

Judul: Addition of preposition word graph generator module in bogor_delft_construct application
Abstrak: Knowledge graph is a new method used to analyze text and represent in a graph form. Word graph consists of concept and relation which represents the meaning of a word in a graph form. Ontology used in a word graph structure consists of 8 binary relationships, 4 frame relationships, and a focus. Bogor_Delft_Construct is an application that implements knowledge graph method to analyze text written in Bahasa Indonesia, However, this application still has some limitations in analyzing vocabularies such as prepositions. This research aims to add a module to the application that could generate word graph of preposition based on preposition patterns prosposed by Wulan (2009). The addition of preposition word graph generator module that was done in Bogor_Delft_Construct could recognize 23 prepositions which were followed by its auxiliary words. The preposition’s auxiliary words were divided into 12 documents; each has different nominative meaning.
Keyword: