Suberization and adventitious rooting in Australian plants

Abstract

Controversy has existed over the involvement of sclerified tissues in the inhibition of adventitious rooting on woody plant cuttings. This study of 16 species of Australian native plants shows no correlation between stem sclerification and poor root formation. On the other hand, poor rooting was correlated with suberization of the cortex and it is suggested that this rather than sclerification may be a factor in the inhibition of root formation.