International Symposium on
Drylands Ecology and Human Security
Water Scarcity During Tillering and Flowering Stages
Field Crops Research Department, National Research Center, Egypt
Factorial design in a split plot arrangement used in tow field experiments which conducted during 2004/2005 and 2005/2006 successive winter seasons in a clay loam soil at the experimental station of National Research Centre, Shalakan, Kalubiya Governorate, Egypt. To evaluate the production of three local varieties of wheat (Triticum aestivum) under water deficit conditions during tillering and flowering growth stages, which of these growth stages more affected by water scarcity and studying the influence of the water regimes on growth, yield and yield components characters. Results indicated that, the water deficit imposed at the tillering stage reduced significantly the growth traits, while yield and its components were affected by water scarcity during flowering stage more than it's affected during tillering growth stage. Withholding irrigation during tillering and/or flowering growth stages reduced significantly all vegetative growth, yield and yield components studied characters more than under normal irrigation. A stress susceptibility index (s) was used to characterize relative stress resistance of all cultivars.