Genome-wide association analysis of salinity responsive traits in Medicago truncatula.

ABSTRACT: Salinity stress is an important cause of crop yield loss in many parts of the world. Here, we performed genome-wide association studies of salinity-stress responsive traits in 132 HapMap genotypes of the model legume Medicago truncatula. Plants grown in soil were subjected to a step-wise increase in NaCl concentration, from 0 through 0.5% and 1.0% to 1.5%, and the following traits were measured: vigor, shoot biomass, shoot water content, leaf chlorophyll content, leaf size, and leaf and root concentrations of proline and major ions (Na⁺ , Cl^- , K⁺ , Ca²⁺ , etc.). Genome-wide association studies were carried out using 2.5 million single nucleotide polymorphisms, and 12 genomic regions associated with at least four traits each were identified. Tran

SUBMITTER: Kang Y 

PROVIDER: S-EPMC6850670 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature