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Genotypic Variation for Salinity Tolerance in Cenchrus ciliaris L.‎

Scarcity of irrigation water and increasing soil salinization has threatened the sustainability of forage production in arid and semi-arid region around the globe.‎ Introduction of salt-tolerant perennial species is a promising alternative to overcome forage deficit to meet future livestock needs in salt-affected areas.‎ This study presents the results of a salinity tolerance screening trial which was carried out in plastic pots buried in the open field for 160 buffelgrass (Cenchrus ciliaris L.‎) accessions for three consecutive years (2003–2005)‎.‎ The plastic pots were filled with sand, organic, and peat moss mix and were irrigated with four different quality water (EC 0, 10, 15, and 20 dS m−۱). The results indicate that the average annual dry weights (DW) were in the range from 122.‎5 to 148.‎9 g/pot in control;‎ 96.‎4–133.‎8 g/pot at 10 dS m−۱; ٦۵.٦–۸۰.٤ g/pot at 15 dS m−۱, and 55.‎4–65.‎6 g/pot at 20 dS m−۱. The highest DW (148.‎9 g/pot) was found with accession 49 and the lowest with accession 23.‎ Principle component analysis shows that PC-1 contributed 81.‎8% of the total variability, while PC-2 depicted 11.‎7% of the total variation among C.‎ ciliaris accessions for DW.‎ Hierarchical cluster analysis revealed that a number of accessions collected from diverse regions could be grouped into a single cluster.‎ Accessions 3, 133, 159, 30, 23, 142, 141, 95, 49, 129, 124, and 127 were stable, salt tolerant, and produced good dry biomass yield.‎ These accessions demonstrate sufficient salinity tolerance potential for promotion in marginal lands to enhance farm productivity and reduce rural poverty.‎

Authors: 
Al-Dakheel, A.J.‎, Hussain, M.‎ I.‎, Al-Gailani, A.‎ Q.‎ M.‎
Year: 
۲۰۱٦
Publication type: 
Scientific Paper
Publication Source: 
Frontiers in Planet Science
Volume/Chapter/Issue: 
۷