Preliminary report on regional trial of Southern new sweet potato varieties in Quanzhou in 2010-2011

【Objective】The present experiment was conducted to indentify and select new sweet potato varieties suitable for planting in Quanzhou, which aimed to provide references for the production and breeding applications of fine sweet potato varieties in southern region. 【Method】With Guangshu 87 as the control, the regional trials of 9 new sweet potato varieties were carried out in Luoyang town, Hui’an county in 2010-2011. 【Result】Among the nine tested varieties, the fresh root yield of Quanshu 10 was the highest (37924.98 kg/ha) followed by Fushu 21 and Jinshu 2. which was41.86% higher than that of the control; The dry root yield of Quanshu 10 was the highest (9955.69 kg/ha) followed by Guifen 3. which was 22.16% higher than that of the control.The quality of Pushu 16 was the best with the highest dry matter content (36.6%) and good edible and sensory quality (82 scores), followed by Guangshu 205. 【Conclusion】Three sweet potato varieties with high fresh root yield, viz., Quanshu 10, Fushu 21 and Jinshu 2, were suitable for being used as fresh-eating varieties,Guifen 3 and Pushu 16 with high dry matter content were appropriate for being used as high quality dry varieties in production and breeding of new sweet potato varieties. The other four varieties with good quality and high dry matter content, viz.,Zhanshu 118, Guangshu 205, Longshu 14 and Zhanshu 20, were desirable for being used as breeding parents in new varieties breeding.