Microtubers production by using Temporary Immersion System (TIS) bioreactor to potato varieties

As the national potatoes growth has become lower from year to year, it is now known that the problems came from the lack of certified potato seed varieties and the minimum access to sophisticated technology to make a good potato variety. The solution that can be made is to utilize microtubers as an efficient factor. The purpose of this research is to find the most effective method in micro tubers cultivation in vitro by comparing the conventional tissue culture method and the Temporary Immersion System (TIS) bioreactor method to four different potato varieties (Granola L., Dayang Sumbi, Atlantic Malang, Maglia). This research uses a split-plot design with a completely randomized design by using two factorial. The result of this study shows that the microtubers in the multiplication and production step using the TIS bioreactor method has a higher average compared to the conventional tissue culture method. As the various details, Dayang Sumbi has the highest parameter such as most sprouts, primer roots, diameter, wet weights, and fastest time growth. Granola L. excel in planlet height and most tubers. Atlantic Malang in the most multiplication and nodus. Meanwhile Maglia excel in most leaves.