Abstract: The yield and characters of seven new purple sweet potato varieties with high quality, including Jinshu 17, Jinshu 20, Funingzi No.4, Funingzi No.5, Longzi No.4, Longzi No.6 and Longzi No.9, while taking Funingzi No.3 as control variety,were compared, in order to provide scientific basis for its production and application in Fujian province. The results showed that the yield of Longzi No.9 was 46.52 t/hm², which was 22.4% higher than control, and ranked the first, and the yield of Jinshu 20 was 42.35 t/hm², which was 11.4% higher than control, and ranked the second among all varieties tested. The yield of Jinshu 17 was 39.17 t/hm², which was only 3.1% higher than control. And these three varieties had good appearance with purple skin, purple meat and high-yield character. The yield of Longzi No.9 and Jinshu 20 was siginifacnt higher than contol variety, so these two vareites was suitable for local planting. The yield of other varieties was all lower than control, the yield of Longzi No.6 and Longzi No.4 was significant or extremely significant lower than control.

Key words: purple sweet potato, yield, variety comparison