Journal of

Plant Biotechnology

Growth of seedlings of four Moroccan barley varieties, including Massine, Laanaceur, Adrar, and Amira, at 15 d after treatment with NaCl|@|~(^,^)~|@|Effect of salinity stress on different traits of four Moroccan barley varieties grown under exposure to three salt concentrations (0, 200, and 300 mM NaCl) to the vegetative stage. (a) RDW, (b) SDW, (c) leaf RWC, (d) EL, (e) Chl a, (f) Chl b, (g) Chl T, (h) proline content, (i) TSS, and (j) proteins. The bars indicate the mean values of three replicates ± standard error. Values with the same letters are not significantly different based on Duncan’s test at p ≤ 0.05. RDW, root dry weight; SDW, shoot dry weight; RWC, leaf relative water content; EL, electrolyte leakage; Chl a, chlorophyll a; Chl b, chlorophyll b; Chl T, total chlorophyll content; ProC, proline content; TSS, total soluble sugar; FW, fresh weight|@|~(^,^)~|@|Principal component analysis projections on axes 1 and 2 accounting for 83% of total variance. Eigenvalues of the correlation matrix are presented as vectors representing parameters that influence each axis the most. The 22 points representing the parameter mean values for each salt treatment (0, 200, and 300 mM NaCl) are plotted on the plane determined by axes 1 and 2. PC, principal component; RDW, root dry weight; SDW, shoot dry weight; RWC, leaf relative water content; EL, electrolyte leakage; Chl a, chlorophyll a; Chl b, chlorophyll b; Chl T, total chlorophyll content; ProC, proline content; TSS, total soluble sugar|@|~(^,^)~|@|Principal component analysis projections on PC1 and PC2. The eigenvalues are presented as segments representing traits that most affect each principal component. The 22 points are the mean accession values of each studied parameter of the four barley varieties grown under NaCl treatment (0, 200, and 300 mM NaCl). PC, principal component; RDW, root dry weight; SDW, shoot dry weight; RWC, leaf relative water content; EL, electrolyte leakage; Chl a, chlorophyll a; Chl b, chlorophyll b; Chl T, total chlorophyll content; ProC, proline content; TSS, total soluble sugar

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