Changes in Dormancy Level in Sorghum halepense Seeds Induced by Water Stress During Seed Development

Abstract

Dormancy in Sorghum halepense seeds as affected by intermittent water stress imposed on the mother plant during seed development was investigated. The drought treatment was imposed in cycles within the maturation period by with-holding water for 5 days, rewatering at the end of each drought cycle and withholding water again. The results showed that two sources of dormancy exist in S. halepense seeds: one is inherent in the caryopsis itself and is not affected by water stress during seed development (...)