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Annals of Botany 35: 165-167, 1971
© 1971 Annals of Botany Company

RESEARCH-ARTICLE

Induction of a ‘Periderm-like’ Tissue in Excised Roots of the Fern Ophioglossum petiolatum Hook

R. L. PETERSON

Department of Botany, University of Guelph Guelph, Ontario, Canada

Received: 27 April 1970   

Basal applications of plant growth regulators to excised roots of Ophioglossum induce modifications in the outer cortical cells. Benzyladenine initiates periclinal divisions in these outer cells producing a ‘periderm-like’ tissue while 2,4-D causes cell enlargement only. Walls of the outer cells of the ‘periderm-like’ tissue are resistant to sulphuric acid and stain with Sudan IV and presumably are suberized.


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