Effect of seed priming with PEG and soil moisture stress on sorghum free amino acid pool, proline, plasma membrane permeability, reducing sugar, soluble sugar, and soluble protein activities.

<p>(a) Free amino acid, (b) electrolyte leakage, (c) reducing sugar, (d) proline, (e) soluble protein, and (f) soluble sugar in sorghum seedlings. Unprimed or primed sorghum seeds were germinated under (I) unstressed soil moisture environment (Unstressed control), (II) drought, (III) excessive soil moisture stress (EM), (IV) 8 d drought stress followed by EM, and (V) 8 d EM followed by drought stress. Measurements were conducted at 12 and 24 days after planting (DAP). Data presented are means ± standard error.