The latest technological developments in shallot cultivation can be done using True Shallot Seed (TSS). The obstacle is the character experiencing difficulty in senescence and long harvesting age. The presence of growth inhibitor is necessary to focus the energy on tuber formation. This research aimed to evaluate the effect of sulfur and paclobutrazol on the growth of shallots from TSS. The research was conducted using polybag in the community land in Medan, using a factorial randomized block design with 2 factors and 3 replications. The first factor was sulfur (0, 75, 150 kg ZA/ha) applications, and the second factor was paclobutrazol (0, 15, 30 ppm) applications. The results showed that 150 kg ZA/ha sulfur application increased the plant length 1-5 weeks after transplanting. The treatment of paclobutrazol and the interaction between paclobutrazol and sulfur applications had no significant effect on plant length and leaf number at 1-4 weeks after transplanting.
Abstract. Hasanah Y, Mawarni L, Hanu, H, Lestami A. 2022. Genetic diversity of shallots (Allium ascalonicum L.) from several locations in North Sumatra, Indonesia based on RAPD markers. Biodiversitas 23: 2405-2410. Shallot (Allium ascalonicum L.) is one of the leading horticultural and spice commodities in Indonesia. Assembling shallot varieties to get a good seed quality requires a high genetic diversity which can be analyzed using molecular markers. This study aims to identify the genetic diversity of shallots from several locations in North Sumatra, Indonesia based on Random Amplified Polymorphic DNA (RAPD) markers. This research was conducted at the Biotechnology Laboratory, Faculty of Agriculture, University of Sumatera Utara, Medan from September to October 2021. A total of 11 shallot varieties from several locations in North Sumatra were genetically analyzed based on RAPD markers with OPA-13, OPB-07, OPD-20, OPM-01 primers. The results showed that 11 shallot varieties originating from several locations in North Sumatra had a high genetic diversity with the presence of two main groups at a dissimilarity coefficient of 76%. These beneficial results can be used as a complement to morphological markers in the genetic study of shallots for breeders to decide what genotypes will be crossed to make new genetic combinations in the development of shallots. This study reports the success of the shallot varieties’ fingerprints using RAPD markers.
The effect of bamboo shoots and shallots extract combination as natural plant growth regulator on the growth of binahong (Anredera cordifolia (Ten.) Steenis.). This research aim was to determine the effect of bamboo shoots and shallots extract combination as natural plant growth regulator on the growth of binahong. This research was conducted at the Universitas Sumatera Utara, Faculty of Agriculture Screen House from June to August 2019.The results of this research indicated that the selection of planting material from Aswad Medan Johor tends to increase plant length, shoot dry weight and root dry weight of binahong plants. The application of 40% bamboo shoot extract tends to increase the shoot dry weight of binahong plant and the application of 40% bamboo shoot extract + 40% shallot extract increased the root dry weight of the binahong plant.
Analysis of the physiological characteristics of plants is important because the analysis includes various observations, calculations, as well as the varying relationships between plant growth and development processes and their results. The purpose of this study was to analyse the physiological characters of two shallot varieties at various watering frequencies. The research design used was a randomized block design with 2 factors, namely shallot varieties (Medan and Bima Brebes) and the frequency of watering (intervals of 1 once a day, once every 3 days, once every 5 days and every 7 days) located in the Greenhouse and Tissue Culture Laboratory of the Faculty of Agriculture, Universitas Sumatera Utara in May - September 2019. The results indicated that the Bima Brebes variety produced the highest total chlorophyll, which was significantly different from the Medan variety. The leaves relative water content was not significantly different in the two shallot varieties tested by watering frequency treatment. Watering once in 5 days produced the lowest hydrogen peroxide but produced the highest ascorbate peroxidase enzyme. The activity of the ascorbate peroxidase enzyme was significantly different and had the highest value in the Medan variety, watered with a frequency of once in 5 days.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.