1. Abd El Raheim, M., Alam, A., Nour, YS., Radwan, AM., 2016. Evaluation of Antimicrobial and Antioxidant activities of Matricaria recutita, Ricinus communis and Zygophyllum coccineum Extracts. Bulletin of Environment, Pharmacology and Life Sciences 5: 3-30. 2. Akram, M., Malik, M.A., Ashraf, M.Y., Saleem, M.F., Hussain, M., 2007. Competitive seedling growth and k+/na+ ratio in different maize (zea mays L.) hybrids under salinity stress. Pakistan Journal of Botany 39: 2553-2563. 3. Amin, S.A., Al-Taisan, W.A., Karam, M.A., Gawad, M.E.A., 2013. Impact of salinity on seed germination and protein content in Zygophyllum coccineum L. and Peganum harmala L. Egyptian Journal of Botany 53: 11-22. 4. Amini, Z., Haddad, R., 2013. Role of photosynthetic pigments and antioxidant enzymes against oxidative stress. Veterinary Journal 81: 383-386. 5. Ashraf, M., Foolad, M., 2007. Roles of glycine betaine and proline in improving plant abiotic stress resistance. Environmental and experimental botany 59: 206-216. 6. Azimi Gandomani, M.F., Dehdari, H., Movahhedi, A., Dehnavi, M., Alinaghizadeh, M., 2009. Evaluation of the effect of salinity stress on ion accumulation, quantitative and qualitative yield of spring rapeseed cultivars. Environmental Stresses in Crop Sciences 1 (1): 27-37. 7. Batanouny, K., Tabl, S., Shabana, H., Soliman, F., 1999. Wild medicinal plants in Egypt: an inventory to support conservation and sustainable use. Academy of Scientific Research and Technology (Egypt) & IUCN. Unpublished Report: [List of some native medicinal plants in Egypt. 8. Bates, L.S., Waldren, R.P., Teare, I., 1973. Rapid determination of free proline for water-stress studies. Plant and soil 39: 205-207. 9. Bringe, K., Schumacher, C.F., Schmitz-Eiberger, M., Steiner, U., Oerke, E-C., 2006. Ontogenetic variation in chemical and physical characteristics of adaxial apple leaf surfaces. Phytochemistry 67: 161-170. 10. Cabello, P., Agüera, E., De La Haba, P., 2006. Metabolic changes during natural ageing in sunflower (Helianthus annuus) leaves: expression and activity of glutamine synthetase isoforms are regulated differently during senescence. Physiologia Plantarum 128: 175-185. 11. Cakmak, I., Marschner, H., 1992. Magnesium deficiency and high light intensity enhance activities of superoxide dismutase, ascorbate peroxidase, and glutathione reductase in bean leaves. Plant physiology 98: 1222-1227. 12. Candan, N., Tarhan, L., 2003. Changes in chlorophyll-carotenoid contents, antioxidant enzyme activities and lipid peroxidation levels in Zn-stressed Mentha pulegium. Turkish Journal of Chemistry 27: 21-30. 13. Cevahir, G., Yentur, S., Yazgan, M., Unal, M., Yilmazer, N., 2004. Peroxidase activity in relation to anthocyanin and chlorophyll content in juvenile and adult leaves of" mini-star" Gazania splendens. Pakistan Journal of Botany 36: 603-610. 14. Chaparzadeh, N., Rahimpour, L., Dolati, M., Barzgar, A., 2013. Age dependent changes of pigments in Rosa hybrida. Journal of plant research (iranian journal of biology). 26(3): 281- 289. 15. Chaparzadeh, N., Saeedifar, R., Zarandi-Miandoab, L., Pazhang, M., 2017. Effect of nitric oxide on antioxidative responses under salinity conditions in Zygophyllum fabago L. (Zygophyllaceae). Nova Biologica Reperta. 4(2): 155-165. 16. Dertinger, U., Schaz, U., Schulze, E.D., 2003. Age‐dependence of the antioxidative system in tobacco with enhanced glutathione reductase activity or senescence‐induced production of cytokinins. Physiologia Plantarum 119: 19-29. 17. Devi, S., 2005. Analytical Procedures in Soil Science and Agricultural Chemistry. Agrotech Publishing Academy. 18. Feller, U., Fischer, A., 1994. Nitrogen metabolism in senescing leaves. Critical Reviews in Plant Sciences 13: 241-273. 19. Feucht, W., Treutter, D., Polster, J., 2004. Flavanol binding of nuclei from tree species. Plant cell reports 22: 430-436. 20. Gluhić D, Herak Ćustić M, Petek M, Čoga L, Slunjski S, Sinčić M. 2009. The content of Mg, K and Ca ions in vine leaf under foliar application of magnesium on calcareous soils. Agriculturae Conspectus Scientificus 74: 81-84. 21. Hu Y, Schmidhalter U. 2005. Drought and salinity: a comparison of their effects on mineral nutrition of plants. Journal of Plant Nutrition and Soil Science 168: 541-549. 22. Hussein, S.R., Marzouk, M.M., Ibrahim, L.F., Kawashty, S.A., Saleh, N.A., 2011. Flavonoids of Zygophyllum album L. and Zygophyllum simplex L. (Zygophyllaceae). Biochemical Systematics and Ecology 39: 778-780. 23. Jiang, C-D., Li, P-M., Gao, H-Y., Zou, Q, Jiang, G-M., Li, L-H. 2005. Enhanced photoprotection at the early stages of leaf expansion in field-grown soybean plants. Plant science 168: 911-919. 24. Khan, S.S., Khan, A., Khan, A., Wadood, A., Farooq, U., et al. 2014. Urease inhibitory activity of ursane type sulfated saponins from the aerial parts of Zygophyllum fabago Linn. Phytomedicine 21: 379-382. 25. Kitajima, K., Mulkey, S.S., Samaniego, M., Joseph Wright, S., 2002. Decline of photosynthetic capacity with leaf age and position in two tropical pioneer tree species. American Journal of Botany 89:1925-1932. 26. Kitson, R.E., Mellon, M.G., 1944. Colorimetric determination of phosphorus as molybdivanadophosphoric acid. Industrial & Engineering Chemistry Analytical Edition 16: 379-383. 27. Lauer, M.J., Blevins, D.G., Sierzputowska-Gracz, H., 1989. 31P-nuclear magnetic resonance determination of phosphate compartmentation in leaves of reproductive soybeans (Glycine max L.) as affected by phosphate nutrition. Plant Physiology 89: 1331-1336. 28. Lefèvre, I., Corréal, E., Lutts, S., 2005. Cadmium tolerance and accumulation in the noxious weed Zygophyllum fabago. Canadian Journal of Botany. 83(12): 1655-1662. 29. Lefsrud, M., Kopsell, D., Wenzel, A., Sheehan, J., 2007. Changes in kale (Brassica oleracea L. var. acephala) carotenoid and chlorophyll pigment concentrations during leaf ontogeny. Scientia Horticulturae 112: 136-141. 30. Lichthentaler, H., 1987. Chlorophyll and carotenoids-pigments of photosynthetic biomembranes,-In: Colowick, SP., Kaplan, NO (ed): Methods in Enzymology, Vol, 148. Academic Press, Sandiego-New York-Berkcley-Boston–London–Sydney–Tokyo–Toronto. 31. Lin, D.C., Nobel, P.S., 1971. Control of photosynthesis by Mg2+. Archives of biochemistry and biophysics 145: 622-632. 32. Madan, S., Nainawatee, H., Jain, S., Jain, R., Malik, M., Chowdhury, J., 1994. Leaf position-dependent changes in proline, pyrroline-5-carboxylate reductase activity and water relations under salt-stress in genetically stable salt-tolerant somaclones of Brassica juncea L. Plant and soil 163: 151-156. 33. Marron, N., Brignolas, F., Delmotte, F.M., Dreyer, E., 2008. Modulation of leaf physiology by age and in response to abiotic constraints in young cuttings of two Populus deltoides times P. nigra genotypes. Annals of forest science 65: 1-8. 34. McMillen, G.G., McClendon, J.H., 1983. Dependence of photosynthetic rates on leaf density thickness in deciduous woody plants grown in sun and shade. Plant Physiology 72: 674-678. 35. Ohe, M., Rapolu, M., Mieda, T., Miyagawa, Y., Yabuta, Y., et al. 2005. Decline in leaf photooxidative-stress tolerance with age in tobacco. Plant science 168: 1487-1493. 36. Parida, A.K., Das, A.B., 2005. Salt tolerance and salinity effects on plants: a review. Ecotoxicology and environmental safety 60: 324-349. 37. Pereira, C.M., Neiverth, C.A., Maeda, S., Guiotoku, M., Franciscon, L., 2011. Complexometric titration with potenciometric indicator to determination of calcium and magnesium in soil extracts. Revista Brasileira de Ciência do Solo 35: 1331-1336. 38. Poiatti, V.A., Dalmas, F.R., Astarita, L.V., 2009. Defense mechanisms of Solanum tuberosum L. in response to attack by plant-pathogenic bacteria. Biological Research 42: 205-215. 39. Qian, Y., Wu, Z., Zhao, R., Zhang, L., 2008. Vegetation patterns and species environment relationships in the Gurbantunggut Desert of China. Journal of Geographical Sciences 18: 400-414. 40. Raghothama, K., Karthikeyan, A., 2005. Phosphate acquisition. Plant and Soil 274: 37-49. 41. Rahdari, P., 2011. Studying effect of mineral elements shortage (nitrogen, phosphorous, potassium, magnesium and calcium) on some physiological and growth factors in fenugreek (Trigonella foenum graceum). Greener Journal of Biological Sciences. 3 (1): 48-45. 42. Reich, A., Holbrook, N.M., Ewel, J.J., 2004. Developmental and physiological correlates of leaf size in Hyeronima alchorneoides (Euphorbiaceae). American Journal of Botany 91: 582-589. 43. Ruuhola, T., Ossipov, V., Lempa, K., Haukioja, E., 2003. Amino acids during development of mountain birch leaves. Chemoecology 13: 95-101. 44. Sairam, R., Singh, D., Srivastava, G., 2003. Changes in activities of antioxidant enzymes in sunflower leaves of different ages. Biologia Plantarum 47: 61-66. 45. Sheligl, H., 1986. Die verwertung orgngischer souren durch chlorella lincht. Planta Journal: 47-51. 46. Sims, D.A., Gamon JA. 2002. Relationships between leaf pigment content and spectral reflectance across a wide range of species, leaf structures and developmental stages. Remote sensing of environment 81: 337-354. 47. Thomas, H., James, A., 1993. Freezing tolerance and solute changes in contrasting genotypes of Lolium perenne L. acclimated to cold and drought. Annals of Botany 72: 249-254. 48. Uddling J, Gelang-Alfredsson J, Piikki K, Pleijel H. 2007. Evaluating the relationship between leaf chlorophyll concentration and SPAD-502 chlorophyll meter readings. Photosynthesis research 91: 37-46. 49. War, A.R., Paulraj, M.G., War, M.Y., Ignacimuthu, S., 2011. Role of salicylic acid in induction of plant defense system in chickpea (Cicer arietinum L.). Plant signaling & behavior 6: 1787-1792. 50. Xie, S., Luo, X., 2003. Effect of leaf position and age on anatomical structure, photosynthesis, stomatal conductance and transpiration of Asian pear. Botanical Bulletin of Academia Sinica 44. 51. Zhou, X., Zhou, Z., Wu, C., 2006. The research of the breeding characters of Zygophyllum xanthoxylum. Pratacultural Science 23: 38-41.