| Abstract: | Treatment of explanted cotyledons of Solanum aviculare with2,4-dichlorophenoxyacetic acid and 6-benzylaminopurine resultsin the transformation of the mesophyll cells into tracheary,sclereid-like and vessel xylem elements. The initial programmingfor xylogenesis can be achieved with as little as 10 h exposureto the plant growth regulators when endogenous auxin levelsremain relatively high. The externally applied growth regulatorswould appear to enter the cotyledons both from the cut end andvia the adaxial epidermis. Key words: 4-D, BAP, Solanum aviculare, cotyledons, xylogenesis, vessels, carboxylesterase |
