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Evaluation of Batini barley landraces from Oman and breeding lines under various irrigation salinity levels

The objective of this study was to conduct a field evaluation of a large collection of barley (Hordeum vulgare L.‎) landraces from the Batinah coastal region of Oman (Batini), together with international elite germplasm, under different irrigation water salinities.‎ This study was conducted on a subset of 234 (out of 2308 landraces) Omani landraces, together with an international elite germplasm composed of 43 breeding lines.‎ Field experiments were conducted over two cropping seasons using three replications of irrigation water salinities corresponding to electrical conductivities of 2, 8 and 14 dS m-1.‎ The total yield variation was estimated to be higher than 80%.‎ During 2003/2004, 277 entries were evaluated and only 70 entries were selected for a second year assessment.‎ Averaged across all salinity levels, biomass yield and grain yield were 6 and 2 t ha-1, respectively.‎ Salinity reduced biomass yield and grain yield by 35% and 55% respectively, particularly at the highest level of 14 dS m-1.‎ However, some entries maintained 7-9.‎5 and 2-2.‎6 t ha-1 of biomass yield and grain yield, respectively.‎ Genetic variation in salinity tolerance in the Omani landraces embeds the whole range of variance of the breeding lines.‎ Salt-tolerant entries were identified for cultivation for biomass, grain and dual-purpose end-uses ‪(grain plus straw)‬.‎

Authors: 
Al-Dakheel A.J, Belhaj Fraj M, Shabbir G, AbdelRehman AQM, Al Gailani M
Year: 
۲۰۱۲
Publication type: 
Scientific Paper
Publication Source: 
Agriculture Science Research Journal
Volume/Chapter/Issue: 
۲
Page Number: 
pp 42-50