Can Seed Treatments Improve Germination of Rare Salt-Marsh Species?
The recreation of a salt marsh at the historic Crissy Field in San Francisco calls for the inclusion of a diverse palette of native vegetation. Among the plants desired for reintroduction are several rare or uncommon species.
A study of various methods of seed treatments to test germination rates may facilitate the reintroduction of the rare species.
Seeds of 14 salt-marsh species were collected, dried, and cleaned. Seed were manually graded under a microscope to select samples which appeared the most viable. Viability evaluations were based only on visual clues such as: uniformity in size, seed color, fullness, symmetry, and lack of insect damage. Graded seed were separated into sub-samples for different treatments. Control group plantings were followed by plantings of both salt- and fresh-water-soaked seed and cold stratified for varying lengths of time.
Several species responded well to soaking treatments. Cold stratification following soaking also produced positive results. The
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