Author(s): Ghandorah, M.O.
Article publication date: 1989-04-01
Vol. 7 No. 1 (yearly), pp. 15-25.
174
Keywords
wheat, moisture stress, Saudi Arabia
Abstract
Drought tolerance of twenty two durum wheat varieties were determined under field condition at the Agricultural Experiment Station of King Saud University, near Riyadh, Saudi Arabia. The varieties were grown under three water regimes. These regimes were achieved by irrigating the soil at 80, 60 and 40% of the available moisture.
Increasing the available moisture percent increased grain yield, days to heading and the grain filling rate. However, the grain filling period was not affected. The interactions between water regimes and varieties were significant for grain yield and grain filling rate in the first season only. Significant differences were detected among varieties for all the studied characters. Relative drought susceptibility coefficient was calculated with varieties No. 20 and 22 being identified as having tolerance and higher grain yield.