Assessment of genetic diversity and yield performance in Jordanian barley (Hordeum vulgare L.) landraces grown under Rainfed conditions

BMC Plant Biology

Research Article

A. Karadsheh¹  S. Ceccarelli²  J. M. Abu Elenein³  M. W. Akash³  A. M. Al-Abdallat⁴  N. I. Hadadd⁴  M. Hasan⁵  M. Baum⁶  A. Jighly⁷ 

[1] Al-Mushaqer Regional Center, NCARE, Madaba, Jordan;Consultant, Rete Semi Rurali, Via di Casignano 25, 50018, Scandicci, FI, Italy;Department of Horticulture and Crop Science, Faculty of Agriculture, The University of Jordan, 11942, Amman, Jordan;Department of Horticulture and Crop Science, Faculty of Agriculture, The University of Jordan, 11942, Amman, Jordan;International Center for Agricultural Research in the Dry Areas (ICARDA), P.O. Box 950764, 11195, Amman, Jordan;Department of Plant Production and Protection, Faculty of Agricultural Technology, Al-Balqa’ Applied University, 19117, Al-Salt, Jordan;International Center for Agricultural Research in the Dry Areas (ICARDA), P.O. Box 950764, 11195, Amman, Jordan;International Center for Agricultural Research in the Dry Areas (ICARDA), P.O. Box 950764, 11195, Amman, Jordan;Agriculture Victoria, Bioscience Research, AgriBio, Centre for AgriBiosciences, 3083, Bundoora, VIC, Australia;School of Applied Systems Biology, La Trobe University, Vic, 3083, Bundoora, Australia;

关键词: GWAS;    QTL;    Drought;    Grain yield;    Single nucleotide polymorphism;   

DOI  :  10.1186/s12870-017-1140-1

 received in 2016-09-09, accepted in 2017-10-25,  发布年份 2017

来源: Springer

【 摘 要 】

BackgroundBarley (Hordeum vulgare L.) is a major cereal crop, which is cultivated under variable environmental conditions and abiotic stresses in marginal areas around the globe. In this study, we evaluated 150 Jordanian landraces obtained from ICARDA Gene Bank and four local checks for yield and yield components related-traits in two locations across Jordan for three growing seasons under rainfed conditions. The study aims to identify superior Jordanian barley genotypes under dry conditions, to understand the genotype × environment (G × E) interactions, to analyze stability parameters and to identify markers associated with yield and yield components under rainfed conditions.ResultsThe barley accessions exhibited significant variation for all traits studied. Three accessions with high yield, cultivar superiority and stability under specific environments were identified with accession G69 is the highest yielding and superior for Madaba and overall environments and G144 is the highest yielding at Ramtha. Accession G123 was high yielding in all environments and was stable across different environments. At the genetic level, the Jordanian landraces were found to be diverse with a clustering that was based on row-type. The GWAS analysis identified 77 significant markers-traits associations for multiple traits including grain yield (GY) with three significant QTLs located at 1H, 2H and 7H, which seem important for dry environments.ConclusionUtilizing Jordanian barley landraces can effectively improve and adapt the current barley cultivars for cultivation under environmental stresses in dry regions. Utilization of markers associated with important agronomical traits and their incorporation in breeding using marker assisted selection can improve barley tolerance to drought stress.

【 授权许可】

CC BY   
© The Author(s). 2017