Performance of some Aegilops species under different water regimes (research note).

Book Title: NA
Year Published: 2003
Month Published: NA
Author: Magdadi, H. M. ; Tell, A. M. ; Masoud, S.
Book Group Author: NA

Eight Aegilops species (A. searsii, A. vavilovii, A. bicornis, A. kotschyi, A. triaristata, A. triuncialis, A. ovata and A. cylindrica) and two wheat cultivars (Triticum durum cv. Hourani 27 and T. aestivum cv. Jubiha) were evaluated for their performance under water stress conditions in the greenhouse. Soil moisture was maintained at 50, 75 and 100% (control). A. cylindrica and A. vavilovii exhibited early heading and the shortest filling period, which are considered important traits for drought tolerance. Water stress significantly reduced flag leaf area, affecting more the length and not the breadth of the leaves. A. cylindrica and A. vavilovii had the greatest flag leaf area, a trait which could be the basis of selection for high-yielding plants under water stress. A. cylindrica and A. ovata ranked first in terms of total dry matter production and water use efficiency. A. ovata had the highest grain yield, whereas A. cylindrica produced the highest straw yield. Water stress significantly reduced root dry weight. A. cylindrica produced the highest root weight and total biomass. These traits could be important for adaptation to semiarid conditions and could be utilized in breeding programmes for drought tolerance.

Pages: 166 - 177
Volume: 30
Number: 2
Journal: Dirasat. Agricultural Sciences
Journal ISO: NA
Organization: NA
Publisher: NA
ISSN: 1026-3764

biomass, biomass production, crop yield, cultivars, droughtresistance, dry matter, flag leaf, heading, heading date, leaf area,plant water relations, roots, stress, stress response, water stress,water use efficiency, wheat, wild relatives, Aegilops bicornis, Aegilopscylindrica, Aegilops kotschyi, Aegilops ovata, Aegilops searsii,Aegilops triaristata, Aegilops triuncialis, Aegilops vavilovii,Triticum, Triticum aestivum, Triticum durum, Aegilops, Poaceae,Cyperales, monocotyledons, angiosperms, Spermatophyta, plants,eukaryotes, Triticum, cultivated varieties, drought tolerance, FieldCrops (FF005) (New March 2000), Plant Breeding and Genetics (FF020),Plant Water Relations (FF062), Environmental Tolerance of Plants (FF900)

Source: EBSCO
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