ibclogo XVI International Botanical Congess

Abstract Number: 4249
Poster No. = 1708


THE EFFECTS OF TEMPERATURE AND COLLECTION TIME ON THE GERMINATION OF SALT MARSH SPECIES FROM THE SEED BANK


Todd P. Egan & Irwin A. Ungar, Dept. of Plant Biology, Ohio University, Athens, Ohio


Soil cores were collected from a salt marsh throughout the season and placed in different temperature regimes to germinate for 8-10 wks and ungerminated seeds were counted. For Salicornia europaea and Atriplex prostrata the total number of germinated seeds decreased throughout the growing season. The number of ungerminated seeds decreased throughout the course of the year for A. prostrata, but for S. europaea the number of ungerminated seeds increased from April to June and decreased from June to October. For S. europaea and A. prostrata the ratio of germinated to total seeds decreased from April to June and increased from June to October. Seeds in 5:25_C germinated best. A June flood killed standing vegetation and may have reduced soil salinity to allow more seeds to germinate.

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