ARS | Publication request: EFFECTS OF AQUEOUS LEAF EXTRACTS OF CREOSOTEBUSH, LARREA TRIDENTATA, ON GERMINATION OF SEVEN SPECIES OF SYMPATRIC PLANTS

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: October 7, 1999
Publication Date: October 7, 1999
Citation: HU, D., FREDRICKSON, E.L., HYDER, P.W., ESTELL, R.E. EFFECTS OF AQUEOUS LEAF EXTRACTS OF CREOSOTEBUSH, LARREA TRIDENTATA, ON GERMINATION OF SEVEN SPECIES OF SYMPATRIC PLANTS. 5TH SYMPOSIUM ON RESOURCES OF THE CHIHUAHUAN DESERT REGION: US AND MEXICO. 1999. ABSTRACT P. 24

Technical Abstract: We exposed seven species of plant seeds to aqueous extracts of Creosotebush leaves: Black Grama, Bouteloua eriopoda; Sideoats Grama, B. curtipendula; Burrograss, Scleropogon brevifolous; Fluffgrass, Dasyochloa pulchella; Bush Muhly, Muhlenbergia porteri; Tarbush, Fluorensia cernua; and, Creosotebush, Larrea tridentata. We also included lettuce as a standard bioassay for allelopathic effects. Extract concentrations varied from 0 to 50 times th concentration found in stemflow during a typical summer rainfall event. Germination and radicle elongation of plant species closely associated with Creosotebush were affected differently than those whose populations are reduced with increasing Creosotebush density.