The present invention solves the problem that sweet potatoes are fertile and leaves overlap, and the leaves are not easily exposed to sunlight, and the ventilation is not good, so that the yield of tuberous roots can be increased and used for further ornamental and greening. Produce sweet potatoes with strong properties and processed products or processed materials. [Solution] The characteristics of the shape or form of the winding vine, which induces the shape change or form change caused by the cultivation means to continue cultivating in the shape of the shape of the vine of the sweet potato wound around the support, and derives the characteristics Is to create a vine-like sweet potato that tightly wraps around. [Selection] Figure 1【課題】本発明はさつま芋が匍匐性で葉が重なり合い葉に陽光があたりにくい部分ができ通風も良くないことを解決することで、塊根の収量を増してさら観賞・緑化にも利用できる巻蔓性が強いさつま芋を作出することとその加工品あるいは加工品材料を提供する。【解決手段】さつま芋の蔓を支柱に巻き付けた形状の状態で栽培し続ける栽培手段に起因した形状変化あるいは形態変化を誘発して強固に巻き付く巻蔓の形状あるいは形態の特質を導きだし、特質が強固に巻き付くまき蔓性のさつま芋を作出することである。【選択図】図１
