The effect of the container for tpm (top of paper method) test on germination and infection rate of porang (Amorphophallus muelleri) seeds

Abstract

Now, the need for porang seedlings is very urgent, so it is necessary to provide seedlings in a short amount of time. Among the sources for propagation of porang, the use of seeds as planting material promises to supply large quantities of seedlings. The initial step of preparing the seedlings is germination. The success of germination determines the next step. The purpose of this study was to examine the effectiveness of using trays and jars in reducing infection rates and to determine the rate of germination of porang seeds. This study used a complete random design with 3 replications. Each replication consisted of 50 seeds. While data analysis used unpaired t-test. And the germination method used the top-on-paper method (TPM). The observed-parameters included germination rate at 7 days after planting (dap), 17 dap, and 30 dap; percentage of seed contamination at 7 dap and 11 dap; the percentage of the number of sprouts rooted at 28 dap and 42 dap. The results showed that the percentage of germination using trays and jars at 7 dap, 17 dap, or 30 dap were not significantly different. Seed contamination at 7 dap and rooted-sprouts at 28 dap were not significantly different between tray and jar. However, for seed contamination at 11 dap, the tray produced higher contamination than the jar and the results were significantly different. As for the rooted sprouts at 42 dap, the trays produced lower rooted sprouts than the jar, 44.67% and 89.33% respectively and significantly different. The conclusion of this research was that germination on top-paper method using a jar was better than a tray