The Allelopathic Effects Of Yaupon On Associated Herbaceous Species
Abstract
A field survey showed a definite decrease in species diversity of herbaceous vegetation beneath yaupon (Ilex vomitoria) canopy in comparison to vegetation in open areas between yaupon clumps. Several laboratory experiments were performed to test the possibility of inhibition due to excretion of toxic substances by yaupon into the environment.
The effects of aqueous extracts from plant materials and associated soils on germination and initial growth of cucumber (Cucumis sativus L.) and wheat (Triticum aestivum L.) were studied. The following materials were collected from mature yaupon stands for use in aqueous extract preparation: fresh yaupon leaves, leaf litter, yaupon roots, soil from within a yaupon canopy, soil from an open, grassy area, and yaupon berries. Strong inhibition of test seed germination and growth did not occur in potting dishes when water extracts were applied: There was no significant difference in germination or growth in leaf and stem of the test subjects after treatment with extract solutions when compared with the controls; there was no apparent difference among the extracts obtained from the various yaupon plant parts or soils.
Description
Program year: 1978/1979Digitized from print original stored in HDR
Subject
yauponIlex vomitoria
herbaceous vegetation
species diversity
excretion of toxic substances
cucumber
wheat
germination
initial growth
Citation
Paxson, Lynn (1979). The Allelopathic Effects Of Yaupon On Associated Herbaceous Species. University Undergraduate Fellow. Available electronically from https : / /hdl .handle .net /1969 .1 /CAPSTONE -ShippM _1986.