1. This is Bulbing, tuber formation, elongation. 这就是球茎块茎的形成，拔节。
2. Purple sweet potato pigment was a natural anthocyanin pigment derived from root tuber of purple sweet potato. 紫色甘薯色素是从紫色甘薯块根中浸提出来的一种天然食用花青素类色素。
3. This species is distinct in always having a globose tuber, capitate inflorescences, and a narrow, smooth achene. 本种在有一球状的块茎，头状的花序和一狭窄，平滑的瘦果方面是独特的。
英英解释
n.
1. a fleshy underground stem or root serving for reproductive and food storage
2. type genus of the Tuberaceae: fungi whose fruiting bodies are typically truffles
