Various Modified Treatments on Improving G0 Seed Multiplication in Potato

Abstract

Many tubers are needed for the production of G0 potato seeds because potato seeds are sold in units of quantity. This research aimed to increase the number of tubers in G0 potato seed production. The study was conducted in a plastic house in Lembang, West Bandung, West Java from October 2017 to January 2018. The study used a randomized block design with six replications. The treatments tested were control (A), application of gibberellins (B), cutting of planlet cuttings followed by application of gibberellins (C), application of paclobutrazole (D), and application of paclobutrazole followed by gibberellins (E). Data were analyzed by F test and continued with orthogonal contrast, and correlation test at 95% confidence level and PCA biplot. The results showed that various introduced treatments failed in increasing the number of tuber total. However, the results of PCA biplot showed that C and D treatments were potential to be studied further by increasing the size of small tubers due to their greater number of tubers in total.