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

块形成到块膨大始期，阶段量和率均达到最大值，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.

摘要测定匍匐粉酶活力是否存在及其变化是鉴定马铃薯葡萄是否有粉合成发生的途径之一。