International Symposium on
Drylands Ecology and Human Security
Effects of Time of Seed Maturation on Dormancy and Germination Requirements of two Important Desert Plants in the UAE
Ali El-Keblawy* and Feda A. Al-Hadad
Dept of Biology, Faculty of Science, UAE University, Al Ain, United Arab Emirates
The genetic and environment of mother plants during the period of seed maturation determine the level of germinability and dormancy in seeds of certain species. It has been documented that seed dormancy and germination responses vary greatly depending on time of seed development and maturation of several species. In the present study the effect of time of seed maturation on dormancy and germination requirements was determined for seeds of two plants growing in the deserts of the UAE: Cyperus conglomeratus and Sporobolus spicatus. The first species is a good forage and sand dune binder and the second could be used in rehabilitation of the degraded salty habitats. However, both the two species, especially C. conglomeratus, have innate dormancy that restricts their germination. The aim of this study was to determine the most suitable time for seed collection at which seeds have lowest possible dormancy and consequently greatest seed germination.