Fig. 1From: Identification of salt-tolerant barley genotypes using multiple-traits index and yield performance at the early growth and maturity stagesPrincipal component analysis (PCA) plot of various growth and physiological traits in the 20 investigated barley genotypes under salinity stress conditions. (A) The contribution of measured traits on extracted principal components based on square cosine and squared coordinates. (B) Grouping of the variables in the first two principal components. RFW, root fresh weight; SFW, shoot fresh weight; SDW, shoot dry weight; SPAD, relative chlorophyll content; PN, photosynthetic rate; GS, stomatal conductance; TE, transpiration rate; MSI, membrane stability index; RWC, relative water content; RN, root Na+ content; RK, root K+ content; SN, shoot Na+ content; SK, shoot K+ content; RKN, root K+:Na+ ratio; SKN, shoot K+:Na+ ratio; RTSN, root-to-shoot Na+ translocation; RTKN, root-to-shoot K+ translocationBack to article page