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Effect of ABA with leaf sprayed on the chlorophyll a (a, b), chlorophyll b (c, d), carotenoid (e, f) and total chlorophyll contents (g, h) of two rice cultivar seedlings under salt stress. Values are shown as the mean ± standard and derived from four replicates (n = 4). Bars indicate standard errors. Different letters above the bars indicate significant differences at the five percent significant level according to Duncan's multiple range tests.
