- Ali Ehyaei, M. & Behbehani Zade, A. A. (1993). Methods of soil chemical analysis. Soil and Water Research Institute of Agricultural Extension and Education, 1, 128 pages. (in Farsi)
- Bagheri, M., Zaefarian, F., Akbarpour, V. & Asadi, G. A. (2012). Assessment of growth indices of soybean, vegetative sweet basil and borage in intercropping different ratios. Journal of Plant Production, 19(3), 1-26. (in Farsi)
- Barnes, J., Anderson, L. A., Gibbons, S. & Phillipson, J. D. (2005). Echinacea species (Echinacea angustifolia (DC.) Hell., Echinacea pallida (Nutt.) Nutt., Echinacea purpurea (L.) Moench): a review of their chemistry, pharmacology and clinical properties. Journal of Pharmacology and Pharmacotherapeutics, 57, 929-954.
- Bauer, R. (2000). Chemistry, pharmacology and clinical application of Echinacea products. In: G. Mazza and B.D. Oomah (eds.), Herbs, Botanicals and Teas. Technomic publishing Company, Inc.: Lancaster, Pennsylvania, USA, pp. 45-73.
- Becker, H. & Hsieh, W. C. (1985). Chicoree-saure und deren derivate aus Echinacea arten. Zeitschrift für Naturforschung, 40, 585-587.
- Bergeron, C., Gafner, S., Batcha, L. L. & Angerhofer, C. K. (2002). Stabilization of caffeic acid derivatives in Echinacea purpurea. L. glycirin extract. Journal of Agricultural and Food Chemistry, 50, 3967-3970.
- Binns, S.E., Hudson, J., Merali, S. & Arnason, J. T. (2002). Antiviral activity of characterized extracts from Echinacea spp. (Heliantheae: Asteraceae) against herpes simplex virus (HSV-I). Planta Medica, 68, 780-783.
- Boo, H. O., Chon, S. U. & Lee, S. Y. (2006). Effects of temperature and plant growth regulators on anthocyanin synthesis and phenylalanine ammonia-lyase activity in chicory (Cichorium intybus L.). Journal of Horticultural Science & Biotechnology, 81(3), 478-482.
- Cech, N. B., Eleazer, M. S., Shoffner, L. T., Crosswhite, M. R., Davis, A. C. & Mortenson, A. M. (2006). High performance liquid chromatography/electrospray ionization mass spectrometry for simultaneous analysis of alkamides and caffeic acid derivatives from Echinacea purpurea extracts. Journal of Chromatography A, 7, 1085-1097.
- Chen, C. L., Zhang, S. C. & Sung, J. M. (2008). Biomass and caffeol phenols production of Echinacea purpurea grown in Taiwan. Journal of Experimental Agriculture, 44, 497-507.
- Du, G., Li, M., Ma, F. & Liang, D. (2009). Antioxidant capacity and the relationship with polyphenol and vitamin C in actinidia fruits. Food Chemistry, 113, 557-562.
- Duke, S. O. & Naylor, A. W. (1974). Effect of light on phenylalanine ammonia-lyase activity in darke-grown Zea mays (L.) seedlings. Plant Science Letters, 2, 289-293.
- Glowniak, K., Zgórka, G. & Kozyra, M. (1996). Solid-phase extraction and reverse-phase high-performance liquid chromatography of free phenolic acids in some Echinacea species. Journal of Chromatography A, 730, 25-29.
- Gray, D. E., Pallardy, S. G., Garrett, H. E. & Rottinghaus, G. E. (2002). Acute drought stress and plant age effects on alkamides and phenolic acid content in purple coneflower roots. Planta Medica, 69, 50-55.
- Hikosaka, K. & Hirose, T. (1997). Leaf angle as a strategy for light competition: optimal and evolutionarily stable light extinction coefficient within a canopy. Ecoscience, 4, 501-507.
- Hitchcock, C. L. & Cronquist, A. (1973). Flora of the Pacific Northwest, University of Washington Press, Seattle.
- Hu, C. & Kitts, D. D. (2000). Studies on the antioxidant of Echinacea root extract. Journal of Agricultural and Food Chemistry, 48, 1466-1472.
- Kishore, G., Ranjan, S., Pandey, A. & Gupta, S. (2010). Influence of altitudinal variation on the antioxidant potential of tartar buckwheat of western Himalaya. Food Science and Biotechnology, 19, 1355-1363.
- Klindt Andersen, M., Hauggaard-Nielsen, H., Weiner, J. & Steen Jensen, E. (2007). Competitive dynamics in two- and three-component intercrops. Journal of Applied Ecology, 44, 545-551.
- Knee, M. & Thomas, L. C. (2002). Light utilization and competition between Echinacea purpurea, Panicum virgatum and Ratibida pinnata under greenhouse and field conditions. Ecological Research, 17, 591-599.
- Kong, L., Yuan, D., Chen, Y., Yin, J., Makino, T., Uno, T., Zhang, S. & Kano, Y. (2006). Quality evaluation of Echinacea species cultivated in China. Asian Journal of Traditional Medicines, 1, 25-30.
- Koocheki, A., Shabahang, J., Khorramdel, S. & Amin Ghafouri, A. (2012). Row intercropping of borage (Borago officinalis L.) with bean (Phaseolus vulgaris L.) on possible evaluating of the best strip width and assessing of its ecological characteristics. Agroecology, 4, 1-11. (in Farsi)
- Kreft, S. (2005) Cichoric acid content and biomass production of Echinacea purpurea plants cultivated in Slovenia. Pharmaceutical Biology, 43, 662-665.
- Lin, S. D., Sung, J. M. & Chen, C. L. (2011). Effect of drying and storage conditions on caffeic acid derivatives and total phenolics of Echinacea Purpurea grown in Taiwan. Food Chemistry, 125, 226-231.
- Lopez–Bellido, F. J., Lopez-Bellido, R. J., Khalil, S. K. & Lopez-Bellido, L. (2008). Effect of planting date on winter Kabuli Chickpea growth and yield under rainfed mediterranean conditions. Agronomy Journal, 100, 957-964
- Luo, X. B., Chen, B., Yao, S. Z. & Zeng, J. G. (2003). Simultaneous analysis of caffeic acid derivatives and alkamides in roots and extracts of Echinacea purpurea by high-performance liquid chromatography-photodiode array detection-electrospray mass spectrometry. Journal of Chromatography A, 986, 73-81.
- Miller, C. S. (2004). The genus Echinacea. Medicinal and Aromatic Plants. Industrial Profiles. CRC Press. pp. 270.
- Min, H. M., Trick, H. N. & Rajasheka, E. B. (2009). Secondary metabolism and antioxidant are involved in environmental adaptation and stress tolerance in lettuce. Journal of Plant Physiology, 166, 180-191.
- Mirhashemi, S. M., Koocheki, A., Parsa, M. & Nassiri Mahallati, M. (2009). Evaluation of growth indices of Ajowan and Fenugreek in pure culture and intercropping based on organic agriculture. Iranian Journal of Field Crops Research, 7, 685-694. (in Farsi)
- Mobin, M., Wu, C. H., Tewari, R. K. & Paek, K. Y. (2015). Studies on the glyphosate-induced amino acid starvation and addition of precursors on caffeic acid accumulation and profiles in adventitious roots of Echinacea purpurea (L.) Moench. Plant Cell, Tissue and Organ Culture, 120, 291-301.
- Mohsen-Abadi, GH. R. & Jahansooz, M. R. (2013). Evaluation of yield and radiation use efficiency in intercropping of barley and vetch in different nitrogen levels. Iranian Journal of Field Crop Science, 44, 419-427. (in Farsi)
- Nachigera, G. M., Ledent, J. F. & Draye, X. (2008). Shoot and root competition in potato/maize intercropping: effects on growth and yield. Environmental and Experimental Botany, 64, 180-188.
- Paz, J.O., Woli, P., Garcia, A. & Hoogenboom, G. (2012). Cotton yields as influenced by ENSO at different planting dates and spatial aggregation levels. Agricultural Sysytems, 111, 45-52.
- Pellati, F., Benvenuti, S., Magro, L., Melegari, M. & Soragni, F. (2004). Analysis of phenolic compounds and radical scavengin activity of Echinacea spp. Journal of Pharmaceuticalan Biomedical Analysis, 35, 289-301.
- Percival, S. S. (2000). Use of Echinacea in medicine. Biochemical Pharmacology, 60, 155-158.
- Perry, N. B., Burgess, E. J. & Glennie, V. (2001). Echinacea standardization: analytical methods for phenolic compounds and typical levels in medicinal species. Journal of Agricultural and Food Chemistry, 49, 1702-1706.
- Pietta, P., Mauri, P. & Bauer, R. (1998). MECK analysis of different Echinacea species. Planta Medica, 64, 649-652.
- Pouramir, F., Nassiri Mahallati, M., Koocheki, A. & Ghorbani, R. (2010). Assessment of Sesame and Chickpea yield and yield components in the replacement series intercropping. Iranian Journal of Field Crops Research, 8, 747-757. (in Farsi)
- Runhle, E. S., Heins, R. D., Cameron, A. C. & Carlson, W. H. (2001). Photocontrol of flowering and stem extension of the intermediate-day plant Echinacea purpurea. Physiologia Plantarum, 112, 433-441.
- Sabet, M. S., Salmanzadeh, M. & Moieni, A. (2017). Identification of gene sequences involved in chicoric acid biosynthesis pathway in Echinacea purpurea through RNA-SEQ transcriptome analysis. Journal of Plant Physiology & Pathology, 5, 5.
- Sabra, A., Adam, L., Daayf, F. & Renault, S. (2012). Salinity-induced changes in caffeic acid derivatives, alkamides and ketones in three Echinacea species. Environmental and Experimental Botany, 77, 234-241.
- SAS Institute. (2002). SAS/STAT user’s Guide. Release G. 12. SAS Institute Cary. North Carolina, USA.
- Schieffer, G. W. & Kohn, M. (2002). HPLC assay of Echinacea purpurea/Goldenseal (Hydrastis canadensis) combination formulations for phenolic acids, alkylamides, and alkaloids. Journal of Liquid Chromatography and amp Related Technologies, 25, 263-274.
- Seidler-Lozykowska, K. & Dabrowska, J. (2003). Yield and polyphenolic acids content in purple coneflower (Echinacea purpurea Moench.) at different growth stages. Journal of Herbs, Spices and Medicinal Plants, 10, 7-12.
- Singleton, V. L., Orthofer, R. & Lamuela-Raventós, R. S. (1999). Analysis of total phenols and other oxidation substrates and antioxidants by means of Folin Ciocalteau Reagent. Methods in Enzymology, 299, 152-178.
- Stanisavijevic, I., Stojicevic, S., Velickovic, D., Veljkovic, V. & Lazic, M. (2009). Antioxidant and antimicrobial activities of Echinacea (Echinacea purpurea L.) extracts obtained by classical and ultrasound extraction. Biotechnology and Bioengineering, Bioeng, 17, 478-483.
- Thomsen, M. O., Frette, X. C., Christensen, K. B., Christensen, L. P. & Grevsen, K. (2012). Seasonal variations in the concentrations of lipophilic compounds and phenolic acids in the roots of Echinacea purpurea and Echinacea pallid. Journal of Agricultural and Food Chemistry, 60, 12131-12141.
- Thygesen, L., Thulin, J., Mortensen, A., Skibsted, L. H. & Molgaard, P. (2007). Antioxidant activity of cichoric acid and alkamides from Echinacea purpurea alone and in combination. Food Chemistry, 101, 74-81.
- Tsai, Y., Chiou, S., Chan, K., Sung, J. & Lin, S. (2012). Caffeic acid derivatives, total phenols, antioxidant and antimutagenic activities of Echinacea purpurea flower extracts. Food Science and Technology International, 46, 169-176.
- Wills, R. B. H. & Stuart, D. L. (1999). Alkylamide and cichoric acid levels in Echinacea purpurea grown in Australia. Food Chemistry, 67, 385-388.
- Wu, C. H., Murthy, H. N., Hahn, E. J., Lee, H. L. & Paek, K. Y. (2007). Efficient extraction of caffeic acid derivatives from adventitious roots of Echinacea purpurea. Czech Journal of Food Sciences, 26, 254-258.
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