Bring forth new ideas in inter specific hybridization, and provide new gene for sweet potato breeding.

选育出一批种间杂交新材料，为甘薯育种提供了新基因。

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The mainly substance in tuberous root in sweet potato is starch. How to improve the content of starch in tuberous root is one of important tasks in sweet potato breeding.

甘薯块根中的主要贮藏物质为淀粉，如何提高甘薯淀粉含量与质量是当前国内外甘薯品质育种的三大主攻方向之一。

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This showed that it was significant to further strengthen the study and utilization of the wild relatives resources to broaden the genetic basis in the sweet potato breeding.

可见，进一步加强近缘野生种资源的研究和利用，对解决甘薯育种中存在的基因源日趋狭窄等问题具有重大意义。

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