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Evaluation of the Characteristics of Virus-free Sweetpotato and Its Use in Hybridization |
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| Authors: | MA Dai-fu LI Xiu-ying LI Hong-min XIE Yi-ping WANG Yi ZHANG Li-ming LIU Zhang-xiong LI Qiang |
| Institution: | 1. Xuzhou Sweetpotato Research Center, Jiangsu 221121 2. CIP-Beijing Liaison Office, Beijing 100081 3. Shandong Academy of Agricultural Sciences , Jinan 250100 |
| Abstract: | Application of virus-free sweetpotato is a breakthrough of sweetpotato production. Several popular varieties were adopted to study their yield increase potential and their use in breeding in this research.The results showed that after virus-elimination, all varieties had a yield increase ranging from 14.95% -91.61% and marketable quality improvement, despite the changes in location and season. The changes of dry matter content and disease resistance were not significant. Virus-free sweetpotato performed vigorous vine growth and strong dry matter assimilation ability. Virus-free parents had a slightly high seed setting percentage, but its flowering ability and performance of off-springs were similar to that of its check plants. |
| Keywords: | Sweetpotato Virus-free Growth habit Dry matter content Disease resistance |
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