Abstract
The fine structure of the abscission zones of Lycopersicon esculentum and Nicotiana tabacum flower pedicels was studied, with special reference to structural changes in the walls of cells during the abscission process. The separation of cells appeared to be initiated primarily in the middle-lamella region of the cell walls. Disintegration of the primary wall, which usually followed breakdown of the middlelamella region, also occurred concurrently with the lysis of the middle-lamella region. During cell-wall degradation, the walls appeared to swell and became highly flexible. The walls of at least some cells in the zone of separation invaginated during the advanced stages of cell-wall disintegration, and ultimately collapsed. Cell-wall changes in abscising pedicels are almost identical to those which occur in abscising cotton and Coleus leaves, as described by BORNMAN (1967).
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
