Performance of Some Aegilops Species Under Different Water Regimes (Research Note)
2003
Migdadi, H.M. | Tell, A.M. | Masoud, S (NCARTT Baq'a (Jordan). | Jordan Univ., Amman (Jordan) Faculty of Agriculture., Mu'tah Univ., (Jordan) Faculty of Agriculture)
Eight Aegilops species in addition to two wheat cultivars were grown in a glasshouse in 1999/2000 to study their performance under different water stres treatments. The different treatments were to maintain soil moisture at 50%, 70% and 100% (control) of available water in soil. The experimental designs were split-plot experiments in a randomized complete block design replicated two times. Ae. Cylindrica and Ae. Vavilovii were early in heading and had the shortest filling period, which are considered important adaptation traits for drought tolerance. Water stress treatments significantly reduced flag leaf area due to pronounced effects on length not on breadth of the leaf. Ae.Cylindrica and Ae.Vavilovii had the largest flag leaf area, which provided a useful parameter for the selection of high yielding plant under water stress. Ae.Cylindrica and Ae.Ovota ranked first among other accessions in total dry matter production and water use efficiency. Ae.ovata had the highest grain yield while Ae.Cylindrica. Produced the highest straw yield. Water stress treatments significantly reduced root dry weight, Aegilops cylindrica produced the highest value for weight of root and total biomass, which could be an important adaptation to semiarid conditions and could be utilized in breeding programs for drought tolerance.
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