Introduction and Screening of Sweet Potato Varieties in Sweet Potato Blast Outbreak Areas in Fuding City

In order to screen out different types of sweet potato varieties which were suitable to be planted in sweet potato blast outbreak areas in Fuding City, seven varieties, such as Fushu 604, Fushu 90, Fushu 8, Quanshu 9, Shangshu 19 and Xiangshu 75-55, were introduced, and the comparison test was conducted with the local main cultivar of Tieshu as control (CK). The results showed that the yield of Fushu 604 increased by 179.8% compared with the control group of Tieshu (CK), which had strong resistance to potato blast and high flour yield, and would be more suitable for the promotion in sweet potato blast outbreak areas of Fuding City as the starch processing variety, while Yushu 15 could be planted as a backup starch processing variety and Fushu 90 could be grown locally as a fresh variety. However, the remaining varieties were not recommended to be planted in Fuding City due to the defects in the resistance to sweet potato blast and yields.