This study completed the collection of 39 taro germplasms in eight regions, including Taitung County and Pingtung County, with a primary culture success rate of 60% for 36 varieties of tissue-cultured seedlings. Additionally, three viruses were identified among the collected germplasms, namely ZaMMV, DsMV, and ZaMV-DSMZ, with DsMV being the predominant virus in indigenous taro. Through the cultivation of shoot apical meristems and comparing pre- and post-heat treatments with different durations, a 2-day heat treatment showed a survival rate of approximately 40% to 60%, while a 4-day heat treatment resulted in a 0% survival rate. After the surviving plants matured, specific pathogen testing was conducted to confirm the effectiveness of virus elimination. In the establishment of a simulated G2 seedling production model, a planting spacing of 100cm demonstrated a 39% increase in yield compared to 50cm spacing. The yields from planting in March were 2-4 times higher than those from planting in june.

▲Fig1. Local varieties of taro collected from Lan-Yu. The impact of planting spacing on seedling growth.

▲Fig2.The effect of planting spacing on seedling growth.