Penampilan agronomi tanaman bawang merah varietas lokananta hasil induksi mutasi kolkisin pada beberapa media tanam

Shallot (Allium ascalonicum L) is an important horticultural sub-sector commodity and potential to be developed. Nevertheless, the production fluctuates due to the use of vegetative seeds in cultivation. Currently, there are still a few true seed shallot (TSS) varieties circulating for production. TSS diversity is needed by the colchicine mutation supported by a proper planting media composition. The experiment aimed to determine the effect and obtain the best colchicine concentration with media composition on the performance of Lokananta shallot. The experiment used a randomized group design with two factors. The first factor was colchicine concentrations i.e. 0%, 0.25%, 0.50%, and 0.75%. The second factor was the composition of media i.e. soil + goat manure), soil + husk charcoal, and soil + husk charcoal + manure. The observations were the percentage of growing seeds (%), growth, and yield characteristics. The results showed that the concentration of colchicine and planting media affected on plant height, leaf area, number of leaves, dry plant weight, dry bulb weight, escaped dry bulb weight, number of tillers, and number of bulbs. Colchicine concentration with media composition only interacted on fresh plant weight with 0.75% colchicine with planting media soil + manure (1:1). Bawang merah merupakan komoditas hortikultura penting dan berpotensi dikembangkan sebagai tanaman obat. Produksi bawang merah masih fluktuatif karena menggunakan benih vegetatif pada budidayanya. Saat ini, masih sedikit varietas true seed shallot (TSS) yang beredar di masyarakat. Diperlukan keragaman TSS melalui mutasi dengan kolkisin dan didukung komposisi media tanam yang tepat. Percobaan bertujuan untuk mengetahui pengaruh dan memperoleh konsentrasi kolkisin dengan komposisi media terbaik terhadap penampilan bawang merah Lokananta. Percobaan menggunakan rancangan acak kelompok dengan 2 faktor. Faktor pertama konsentrasi kolkisin yang terdiri dari konsentrasi 0%, 0,25%, 0,50%, dan 0,75%. Faktor kedua komposisi media tanam yang terdiri atas tanah + pupuk kandang kambing, tanah + arang sekam, dan tanah + arang sekam + pupuk kandang kambing. Variabel pengamatan yaitu persentase benih tumbuh (%), karakter agronomi dan hasil. Hasil penelitian menunjukkan bahwa konsentrasi kolkisin dan komposisi media tanam berpengaruh terhadap tinggi tanaman, luas daun, jumlah daun, bobot tanaman kering, bobot umbi kering, bobot umbi kering eskip, luas daun, jumlah anakan, dan jumlah umbi. Konsentra