The adventitious buds can be developed in the crossed area of both cork cambium and phloem ray inside the root. 宿根上的不定芽发生于韧皮射线与木栓形成层交叉的区域。
If the high growth Lankao Paulownia has obvious short-term, can be hidden from adventitious buds or shoot Tuchang formation of a strong natural sticks to dry. 如兰考泡桐的高生长有明显的阶段性,能由不定芽或潜伏芽形成强壮的徒长枝自然接干。