The Effect of Major Viruses and Virus-free Planting Materials on Sweetpotato Root Yield in China

Zhang Li-ming; Wang Qing-mei; Ma Dai-fu; Wang Yi; SCI

机构： Shandong Acad Agr Sci, Crop Inst, Jinan, Shandong, Peoples R China; Xuzhou Sweetpotato Res Ctr, Xuzhou, Peoples R China; Int Potato Ctr, Liaison Off China, Beijing, Peoples R China;

关键词： ELISA virus detection marketable ratio dry matter content degeneration