At the stage of tuberization to tuber-expanding, the growth of leaves, stalks and tubers reached the maximum.

块茎形成到块茎膨大始期，硫量和硫速率均达到最大值，成熟收获降到最低值。

To screen whether there is starch synthesis within stolon before occurrence of tuberization, one way to do so is to check amylase activities during stolon growing.

摘要测定匍匐茎内淀粉酶活存在及其变化鉴定马铃薯葡萄茎内有淀粉合成发生的途径之一。