[01] Mohamed H. Mursy, Department of Water Relations and Field Irrigation, National Research Centre, Dokki, Giza, Egypt. [02] Mamdouh A. A. Abdou, Department of Water Relations and Field Irrigation, National Research Centre, Dokki, Giza, Egypt. [03] Hussein A. H. Said-Al Ahl, Medicinal and Aromatic Plants Research Department, National Research Centre, Dokki, Giza, Egypt.

This work reports the effect of potassium (K) fertilizer rates and water stress levels on the growth and seed yield of lupine (Lupinus termis, L.), cv. Giza1 and cv. Giza2 grown in pots under greenhouse conditions. Growth characters (plant height, fresh and dry weights and pods yield/plant) were significantly decreased with the rise in water stress levels in the two cultivars; while Lupinus termis cv.Giza2 was the higher tolerant to water stress treatments than Lupinus termis cv.Giza1. Application of K fertilizer rates counteracted the above adverse effects of water stress. The maximum growth characters and pods yield were obtained from plants irrigated with 80% available soil moisture (ASM) with K fertilizers rates (0.8 and 0.6 g K pot-1), respectively. Increasing the dosage of K fertilization significantly increased the tolerant of two cultivars to water stress. Maximum yield of seed was achieved with Giza2 cultivar while the minimum one was obtained with Giza1cultivar.

Lupinus Termis L., Potassium, Water Stress, Growth Characters, Seed Yield, Cultivar

[01] Abdalla, M.M. and N.H. El. Khoshiban (2007).The influence of water stress on growth, relative water content, photosyntheticpigments, some metabolic and hormonalcontents of two Triticium aestivum cultuivars. Journal of Applied Sciences Research, 3 (12):2062-2074. [02] Andersen, M.N., Jensen, C.R. and R. Losch (1992). The interaction effects of potassium and drought in field-grown barley. I. yield, water-use efficiency and growth. Soil Plant Sci., 42: 34-44. 1992. [03] Baher ZF, Mirsa M, Ghorabanil M, Rezaii MZ. The influence of water stress on plant height, herbal and essential oil yield and composition in Satureja hortensis L. Flavor and Fragrance J., 17: 275- 277. 2002. [04] Bar-Tal, A., Feigenbaum, S. and D.I. Sparks (1991). Potassium-salinity interactions in irrigated corn. Irrigation Sci., 12 (1): 27-35. [05] Behboudian, M.H. and D.R. Anderson (1990). Effect of Potassium deficiency on water relations and photosynthesis of the tomato plant. Plant and Soil 127: 137-139. [06] Boyer, J.S. (1990). Cell enlargement and growth-induced water potentials. Physiol. Plant, 73: 311-316. [07] Cakmak, I. (2005). The role of potassium in alleviating determental effects of abiotic stresses in plants. J Plant Nutr Soil Sci 168:521-530. [08] Cakmak, I.(1999). Engels C. Role of mineral nutrients in photosynthesis and yield formation, in Rengel, Z: Mineral Nutrition of Crops: Mechanisms and Implications. The Haworth Press, New York, USA, pp. 141-168. [09] El-Moursi, A., Gamal El-Din K. M. and S. A. Tarraf (2012). Physiological Response of Lupine Plant (Lupinus termis L.) To Heat Hardening. American-Eurasian J. Agric. & Environ. Sci., 12 (5): 660-663. [10] Ezz El-Din, AA. (2003). Growth, yield and essential oil of anise in relation to water supply. Agric Sci Ain Shams Univ Cairo Annals, 48 (2): 777-785. [11] Hassan, E.A., M.M. Ibrahim, and Y.A.M. Khalifa (2012). Efficiency of biofertilization on growth, yield, alkaloids content and chemical constitutes of Lupinus termis L. plants. Aust. J. of Basic and Appl. Sci., 6(13): 433-442. [12] Jackson, M.L. (1973). Soil Chemical Analysis. Prentice–Hall of India pp.144-197. [13] Khalil,S. E. and E. G. Ismael (2010). Growth, yield and seed quality of Lupinus termis as affected by different soil moisture levels and different ways of yeast application. Journal of American Science, 6(8): 141-153. [14] Leithy, ST, El-Meseiry, A. and E. F. Abdalla (2006).Effect of bio fertilizer, cell stabilizer and irrigation regime on rosemary herbage oil yield and quality. J Applied Sci Res., 2 (10): 773-779. [15] Lindhauer, M.G. (1985). Influence of potassium nutrition and drought on water relations and growth of sunflower (Helianthus annuus L.). Z Pflanzenerahr Bodenk 148: 645-669. [16] Manivannan, P., Abdul, C., Jaleel, S. B., Kishorekumar, A., Somasundaram, R., Lakshmanan, R. and G.M.A. Panneerselvam (2007). Growth, biochemical modifications and praline metabolism in Helianthus annus L. as induced by drought stress. Colloids and Surfaces B: Biointerfaces 59:141-149. 2007. [17] Marschner, H. (1995). Mineral nutrient of higher plants.Second Ed., Academic Press Limited. Harcourt [18] Brace and Company, Publishers, London pp. 347-364. [19] Marschner, H. andI. Cakmak (1989). High light intensity enhances chlorosis and necrosis in leaves of zinc, potassium, and magnesium deficient bean (Phaseolus vulgaris) plants. J. Plant Physiol., 134: 308- 315. [20] Mirsa, A. and N.K. Srivastava(2000).Influence of water Stress on Japanese mint.Journal of Herbs, Species and Medicinalplants, 7 (1): 51- 58. [21] Misra, A. and N.K.Strivastava (2000). Influence of water stress on Japanese mint. J Herbs Spices & Medicinal Plants, 7 (1): 51-58. [22] Moeini Alishah, H., Heidari, R., Hassani, A. and A.Dizaji (2006). Effect of water stress on some morphological and biochemical characteristics of purple basil (Ocimum basilicum). J Biol Sci 6 (4): 763- 767. [23] Mohamed, M.A.H. And O.A.O.Saad (2004). Effect of VAmycorrhizae and Azotobacter on growth and oil production of Achillea milefolium plant under different water regime. J. Agric. Sci. Mansoura Univ., 29 (1): 391-407. [24] Nurhan, T.D. andS.V. Ramon (2005). Effect of water stress on plant growth and thymol and carvacrol concentrations in Mexican oregano grown under controlled conditions. J. Applied Horticulture, 7 (1): 20-22. [25] Premachandra, G., Saneoka, H. and S.Ogata (1991). Cellmembrane stability and leaf water relations as affectedby potassium nutrition of water-stressed maize. J. Experim. Bot., 42 (239): 739 -745. [26] Raza, S. and B. Jrnsgard (2005). Screening of white lupine accessions for morphological and yield traits. African Crop Science Journal, 13 (2): 135-141. [27] Robin, C.L. and A.S. Guckert (1989). Effect of potassium on the tolerance to PEG-induced water stress of two white clover varieties (Trifolium repens L). Plant and Soil 120: 153-158. [28] Shahhat, I. M. A. Ghazal, G.M. and G. S.Mohamed (2014). Effect of ascorbic acid and niacin on protein, oil fatty acids and antibacterial activity of Lupinus termisseeds. International Journal of Pharmacognosy and Phytochemical Research, 6(4); 866-873. [29] Simon, J.E., Reiss, B.D., Joly, R.J. and D.J. Charles (1992). Water stress induced alternations in essential oil content of sweet basil. J. Essential oil Research, 1: 151- 157. [30] Singh, M., Ganesha Rao, R.S. and S. Ramesh (1997). Irrigation and nitrogen requirement of lemongrass (Cymbopogon flexuosus (Sleud) Wats) on a red sandy loam soil under semiarid tropical conditions. J. Essential oil Res., 9: 569-574. [31] Singh, M. and Ramesh S. (2000). Effect of irrigation and nitrogen on herbage, oil yield and water- use efficiency in rosemary grown under semi- arid tropical conditions. J. Med. Aromatic Plant Sci., 22 (IB): 659-662. [32] Villagra, P.E. and J.B. Cavagnaro (2006).Water stress effect on the seedlings growth ofprosopis orgenta to and prosopis alpataco. Jurnal of Aried Enviroment, 64: 390-400. [33] Walter, A. andD.B. Duncan (1969). Multiple range and multiple test. Biometries, 11:1-24.