Abstract
Red spruce ( Picea rubens Sarg.) growth and reproduction is declining in many areas of the eastern United States ( Klein and Perkins, Bot. Rev. 54, 1–43, 1988). An often cited cause of this decline is air pollution. In this study simulated acid rain was used to examine the effects of low pH on the female reproductive structures of five red spruce trees showing no signs of pollution damage. Cone scale weight, seed weight, number of seeds per cone, and per cent germination of filled seed did not differ significantly among the acid rain treatments. The percentage of filled seed per cone was significantly reduced as the pH of the simulated rain solutions declined.
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.
