Figure 9.

Development and submergence-induced growth of adventitious roots from the youngest (1st) to the oldest (4th) node of adult plants. The first column shows cross-sections through the four different nodes of air-grown plants. The arrowheads indicate the positions of root initials. The second column shows front views of the four different nodes of air-grown plants. The third column shows front views of the four different nodes 10 h after submergence treatment. The adventitious roots at the second, third, and fourth nodes have emerged through the epidermis.