Abstract

Sucrose treatment of the hypocotyls of derooted 7-day-old sunflower seedlings stimulated growth of hypocotyls as measured by dry weight. The fresh weight of the hypocotyls was unaffected. Stimulatory effect of sucrose was much greater in the presence of the cotyledons than in their absence. Cotyledons also influenced the differentiation of primary phloem fibers in the hypocotyls of seedlings, although when cotyledons were removed, induction of some phloem fiber differentiation was possible by sucrose treatment alone. In the presence of the cotyledons, sucrose in the concentrations of 0.025 and 0.05 M greatly enhanced primary phloem fiber differentiation and secondary cell wall thickening. Stimulation of dry weight of the hypocotyls by sucrose treatment in the presence of the cotyledons may be due to enhanced secondary cell wall thickening.

Full Text
Paper version not known

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 call

Disclaimer: 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.