T. Rajasekaran, P. Giridhar, and G. A. Ravishankar, Production of steviosides in ex vitro and in vitro grown Stevia rebaudiana Bertoni, J. Sci. Food Agr, vol.87, pp.420-424, 2007.

J. E. Brandle and N. Rosa, Heritability for yield, leaf-stem ratio and stevioside content estimated from a landrace cultivar of Stevia rebaudiana, Can. J. Plant Sci, vol.72, pp.1263-1266, 1992.

U. Kienle, What kind of Stevia would you chose? Cultivation and production-worldwide aspects, Journal Fur Verbraucherschutz Und Lebensmittelsicherheit-J. Consumer Prot. Food Saf, vol.5, pp.241-250, 2010.

A. K. Yadav, S. Singh, D. Dhyani, and P. S. Ahuja, A review on the improvement of stevia Stevia rebaudiana (Bertoni), Can. J. Plant Sci, vol.91, pp.1-27, 2011.

L. Andolfi, M. Macchia, and L. Ceccarini, Agronomic-productive characteristics of two genotypes of Stevia rebaudiana in central Italy, Italian J. Agron, vol.1, pp.257-262, 2006.

S. Tavarini and L. G. Angelini, Stevia rebaudiana Bertoni as a source of bioactive compounds: the effect of harvest time, experimental site and crop age on steviol glycoside content and antioxidant properties, J. Sci. Food Agr, vol.93, pp.2121-2129, 2013.

J. E. Brandle, A. N. Starratt, and M. Gijzen, Stevia rebaudiana: Its agricultural, biological, and chemical properties, Can. J. Plant Sci, vol.78, pp.527-536, 1998.

A. S. Richman, M. Gijzen, A. N. Starratt, Z. Y. Yang, and J. E. Brandle, Diterpene synthesis in Stevia rebaudiana: recruitment and up-regulation of key enzymes from the gibberellin biosynthetic pathway, Plant J, vol.19, pp.411-421, 1999.

N. I. Bondarev, M. A. Sukhanova, O. V. Reshetnyak, and A. M. Nosov, Steviol glycoside content in different organs of Stevia rebaudiana and its dynamics during ontogeny, Biol. Plantarum, vol.47, pp.261-264, 2003.

S. Ceunen and J. Geuns, Influence of photoperiodism on the spatio-temporal accumulation of steviol glycosides in Stevia rebaudiana (Bertoni), Plant Sci, vol.198, pp.72-82, 2013.

Y. R. Aladakatti, Y. B. Palled, M. B. Chetti, S. I. Halikatti, S. C. Alagundagi et al., Effect of nitrogen, phosphorus and potassium levels on growth and yield of stevia (Stevia rebaudiana Bertoni.)*. Karnataka, J. Agric. Sci, vol.25, pp.25-29, 2012.

R. Kumar, S. Sharma, K. Ramesh, and B. Singh, Effects of shade regimes and planting geometry on growth, yield and quality of the natural sweetener plant stevia (Stevia rebaudiana Bertoni) in north-western Himalaya, Arch. Agron. Soil Sci, vol.59, pp.963-979, 2012.

P. K. Pal, R. Prasad, and V. Pathania, Effect of decapitation and nutrient applications on shoot branching, yield, and accumulation of secondary metabolites in leaves of Stevia rebaudiana Bertoni, J. Plant Physiol, vol.170, pp.1526-1535, 2013.

N. M. Patil, Biofertilizer effect on growth, protein and carbohydrate content in Stevia rebaudiana var Bertoni, Recent Res. Sci. Technol, vol.2, pp.42-44, 2010.

J. E. Brandle and P. G. Telmer, Steviol glycoside biosynthesis, Phytochem, vol.68, pp.1855-1863, 2007.

N. Totté, L. Charon, M. Rohmer, F. Compernolle, I. Baboeuf et al., Biosynthesis of the diterpenoid steviol, an ent-kaurene derivative from Stevia rebaudiana Bertoni, via the methylerythritol phosphate pathway, Tetrahedron Lett, vol.41, pp.6407-6410, 2000.

K. K. Kim, Y. Sawa, and H. Shibata, Hydroxylation of ent-kaurenoic acid to steviol in Stevia rebaudiana Bertoni -Purification and partial characterization of the enzyme, Arch. Biochem. Biophys, vol.332, pp.223-230, 1996.

A. Richman, A. Swanson, T. Humphrey, R. Chapman, B. Mcgarvey et al., Functional genomics uncovers three glucosyltransferases involved in the synthesis of the major sweet glucosides of Stevia rebaudiana, Plant J, vol.41, pp.56-67, 2005.

J. E. Brandle, Genetic control of rebaudioside A and C concentration in leaves of the sweet herb, Stevia rebaudiana, Can. J. Plant Sci, vol.79, pp.85-92, 1999.

E. Cordoba, H. Porta, A. Arroyo, C. San-román, L. Medina et al., Functional characterization of the three genes encoding 1-deoxy-D-xylulose 5-phosphate synthase in maize, J. Exp. Bot, vol.62, pp.2023-2038, 2011.

E. Cordoba, M. Salmi, and P. Leon, Unravelling the regulatory mechanisms that modulate the MEP pathway in higher plants, J. Exp. Bot, vol.60, pp.2933-2943, 2009.

H. Tschoep, Y. Gibon, P. Carillo, P. Armengaud, M. Szecowka et al., Adjustment of growth and central metabolism to a mild but sustained nitrogen-limitation in Arabidopsis, Plant Cell Env, vol.32, pp.300-318, 2009.

J. L. Ward, J. M. Baker, A. M. Llewellyn, N. D. Hawkins, and M. H. Beale, Metabolomic analysis of Arabidopsis reveals hemiterpenoid glycosides as products of a nitrate ion-regulated, carbon flux overflow, Proc. Natl. Acad. Sci. USA, vol.108, pp.10762-10767, 2011.

J. P. Bryant, F. S. Chapin, and D. R. Klein, Carbon/nutrient balance of boreal plants in relation to vertebrate herbivory, Oikos, vol.40, pp.357-368, 1983.

P. D. Coley, J. P. Bryant, and F. S. Chapin, Resource availability and plant antiherbivore defense, Sci. (Washington), vol.230, pp.895-899, 1985.

D. A. Herms and W. J. Mattson, The dilemma of plants: to grow or defend, Q. Rev. Biol, vol.77, pp.283-335, 1992.

J. Tuomi, P. Niemelä, E. Haukioja, S. Sirén, and S. Neuvonen, Nutrient stress: an explanation for plant anti-herbivore responses to defoliation, Oecologia, vol.61, pp.208-210, 1984.

G. Cronin and M. E. Hay, Effects of light and nutrient availability on the growth, secondary chemistry, and resistance to herbivory of two brown seaweeds, Oikos, vol.77, pp.93-106, 1996.

B. K. Hale, D. A. Herms, R. C. Hansen, T. P. Clausen, and D. Arnold, Effects of drought stress and nutrient availability on dry matter allocation, phenolic glycosides, and rapid induced resistance of poplar to two lymantriid defoliators, J. Chem. Ecol, vol.31, pp.2601-2620, 2005.

M. H. Ibrahim, H. Z. Jaafar, A. Rahmat, and Z. A. Rahman, Effects of nitrogen fertilization on synthesis of primary and secondary metabolites in three varieties of kacip fatimah (Labisia Pumila Blume), Int. J. Mol. Sci, vol.12, pp.5238-5254, 2011.

A. M. Izquierdo, T. Mdpn, G. S. Jiménez, and F. C. Sosa, Changes in biomass allocation and phenolic compounds accumulation due to the effect of light and nitrate supply in Cecropia peltata plants, Acta Physiol. Plant, vol.33, pp.2135-2147, 2011.

T. J. Massad, L. A. Dyer, and G. Vega, Costs of Defense and a Test of the Carbon-Nutrient Balance and Growth-Differentiation Balance Hypotheses for Two Co-Occurring Classes of Plant Defense, PloS One, vol.7, issue.10, p.47554, 2012.

E. Haukioja, V. Ossipov, J. Koricheva, T. Honkanen, S. Larsson et al., Biosynthetic origin of carbonbased secondary compounds: cause of variable responses of woody plants to fertilization?, Chemoecology, vol.8, pp.133-139, 1998.

J. Koricheva, S. Larsson, E. Haukioja, and M. Keinänen, Regulation of woody plant secondary metabolism by resource availability: hypothesis testing by means of meta-analysis, Oikos, vol.83, pp.212-226, 1998.

V. Müller, C. Lankes, B. F. Zimmermann, G. Noga, and M. Hunsche, Centelloside accumulation in leaves of Centella asiatica is determined by resource partitioning between primary and secondary metabolism while influenced by supply levels of either nitrogen, phosphorus or potassium, J. Plant Physiol, vol.170, pp.1165-1175, 2013.

H. Lambers, F. S. Chapin, and T. L. Pons, Plant physiological ecology, 2008.

L. Fda, M. De-barros, H. Dalmagro, Â. Dalmolin, W. Pereira et al., Fitting net photosynthetic light-response curves with Microsoft Excel-a critical look at the models, Photosynthetica, vol.51, pp.445-456, 2013.

E. Baly, The kinetics of photosynthesis, Proc. R. Soc. Lond. B. Biol. Sci, vol.117, pp.218-239, 1935.

. R-core-team, R: A Language and Environment for Statistical Computing. R Foundation for Statistical Computing, 2013.

L. M. Alves and M. Ruddat, Presence of gibberellin-A20 in stevia-rebaudiana and its significance for the biological-activity of steviol, Plant Cell. Physiol, vol.20, pp.123-130, 1979.

T. V. Humphrey, A. S. Richman, R. Menassa, and J. E. Brandle, Spatial organisation of four enzymes from Stevia rebaudiana that are involved in steviol glycoside synthesis, Plant Mol. Biol, vol.61, p.16786291, 2006.

H. Kumar, K. Kaul, S. Bajpai-gupta, V. K. Kaul, and S. Kumar, A comprehensive analysis of fifteen genes of steviol glycosides biosynthesis pathway in Stevia rebaudiana (Bertoni), Gene, vol.492, pp.276-284, 2012.

A. Mohamed, S. Ceunen, J. Geuns, W. Van-den-ende, D. Ley et al., UDP-dependent glycosyltransferases involved in the biosynthesis of steviol glycosides, J. Plant Physiol, vol.168, pp.1136-1141, 2011.

P. Jones and T. Vogt, Glycosyltransferases in secondary plant metabolism: tranquilizers and stimulant controllers, Planta, vol.213, pp.164-174, 2001.