Fig. 1

Tested plant organs: Leaves (a), stem (b), yellow cultivar tuber (c), white cultivar tuber (d), slices of the yellow and white tubers (e), and (f) of Ipomea batatas.
Tested plant organs: Leaves (a), stem (b), yellow cultivar tuber (c), white cultivar tuber (d), slices of the yellow and white tubers (e), and (f) of Ipomea batatas.