1. Adams E, Shin R. 2014. Transport, signaling, and homeosta-sis of potassium and sodium in plants. J. Integr. Plant Biol. 56: 231–249
2. Alvarado AD, Bradford KJ, Hewitt JD. 1987. Osmotic priming of tomato seeds. Effects on germination, field emergence, seedling growth and fruit yield. J. Am. Soc. Horticultural Sci. 112: 427–432
3. Amin B, Mahleghah G, Mahmood HMR, Hossein M. 2009. Evaluation of interaction effect of drought stress with ascorbate and salicylic acid on some of physiological and biochemical parameters in okra (Hibiscus esculentus L. Res. J. Biol. Sci. 4: 380–387
4. Anjum SA, Xie X, Wang L, Saleem MF, Man C, Lie W. 2011. Morphological, physiological and biochemical responses of plants to drought stress. Afr. J. Agric. Res. 6: 2026–2032
5. Arnon DT. 1949. Copper enzyme in isolated chloroplasts, polyphenaloxidase in Beta vulgaris. Plant Physiol. 24: 1–15