由于棉花是直根系作物，根系生长庞大、生育期长，与果树的生长有一定的相似性。

The cotton is similar to fruiter because the cotton roots is taproot and hugeness and growth days is long.

冰凉花属于宿根植物，其根几乎终生为初生结构。一年生苗直根系的主根和侧根的初生木质部均为二原型。

Adonis amurensis is perennial herb, Its roots are nearly primary structure in the whole life, Primary Xylems of main root and lateral roots of one year seedling are diarch.