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Effects of 45 days salt treatments (0, 100, 200 and 400 mM NaCl) on chlorophyll b in Z. coccineum from Manzala, Wadi Asyuti and Wadi Houf. Value represents the mean of 3 replicates ± standard error, p-value < 0.05. For variables denoted with the same letter, the difference is not statistically significant.
