GENOME WIDE ASSOCIATION ANALYSIS OF PLANT HEIGHT, SPIKE AND AWN LENGTH IN BARLEY (HORDEUM VULGARE L.) EXPOSED TO MN STRESS.

EXPOSED TO MN STRESS Keywords: Barley; Genome Wide Association Analysis; Manganese; Morphological Traits; QTL EN Barley Genome Wide Association Analysis Manganese Morphological Traits QTL INTRODUCTION In agricultural systems, plant productivity is strongly influenced by environmental conditions. The objectives of this study were (1) to evaluate genomic regions affected Mn stress and contributive morphological traits in a diverse spring barley collection, (2) to establish marker-trait associations for each trait, and (3) to identify genes/loci affecting Mn stress in spring barley that can be used for genetic improvement in breeding programs. The manganese toxicity symptoms vary widely among plant species and varieties within species, perhaps because the phytotoxic mechanisms of Mn involve different biochemical pathways in different plant genotypes (El-Jaoual and Cox, 1998). [Extracted from the article]