|Author:||Al-Rjoub, F. A.|
|Book Group Author:||NA|
A pot experiment was conducted in a greenhouse as rainout shelter to investigate the response of diverse durum wheat (Triticum turgidum var. durum [T. durum]) cultivars (Om-quais, Hourani-27, Safra Ma'an and Al-Samra) to three levels of soil moisture: 50 (M1), 65 (M2) and 85% (M3) of field capacity. The cultivars were good drought-tolerant because they were able to produce at M1, which is 4% below the wilting point. The cultivars did not differ significantly for yield and yield components. The soil moisture very significantly affected all characters, except for harvest index. Increasing the soil moisture levels from M1 to M2 and from M2 to M3 caused a great increase of 136 and 77% for biological yield per plant, 143 and 63% for grain yield per plant, 93 and 77% for straw yield per plant, 93 and 43% for number of spikes per plant, 137 and 44% for number of kernels per plant and by 7 and 10% for thousand kernel weight, respectively. Under rainfed conditions, supplementary irrigation can improve wheat yield and avoid crop failure by limited amount of water.
|Pages:||2438 - 2443|
|Journal:||Pakistan Journal of Biological Sciences|
crop yield, cultivars, drought resistance, growth, harvestindex, irrigation, kernels, soil water content, spikes, yieldcomponents, Triticum durum, Triticum, Poaceae, Cyperales,monocotyledons, angiosperms, Spermatophyta, plants, eukaryotes,cultivated varieties, drought tolerance, watering, Field Crops (FF005)(New March 2000), Plant Breeding and Genetics (FF020), Plant Production(FF100), Environmental Tolerance of Plants (FF900), Soil Physics(JJ300), Soil Water Management (Irrigation and Drainage) (JJ800)(Revised June 2002) [formerly Soil Water Management]