NPK partitioning, growth, yield and proximate composition of okra (Abelmoschus esculentus) under water deficit stress

Authors

  • Isiaka Kareem Department of Agronomy, University of Ilorin, P. M. B. 1515, Ilorin, Nigeria Author
  • Faseyi Faith Department of Agronomy, University of Ilorin, P. M. B. 1515, Ilorin, Nigeria Author
  • Saliu Kareem Department of Biology, School of Secondary Education (Science Programme), Federal College of Education (Special), Oyo, Nigeria Author
  • Abdulmaliq S. Y. Department of Crop Production, Ibrahim Badamasi Babangida Univesity, Lapai, Niger State, Nigeria Author
  • Adekola O.F. Department of Agronomy, University of Ilorin, P. M. B. 1515, Ilorin, Nigeria Author
  • Abdulkareem K.A. Department of Plant Biology, University of Ilorin, P. M. B. 1515, Ilorin, Nigeria Author
  • Olayinka B.U. Department of Plant Biology, University of Ilorin, P. M. B. 1515, Ilorin, Nigeria Author
  • AbdulAziz Ayinla Department of Biological Sciences, Faculty of Natural and Applied Sciences, Al-Hikmah University, Ilorin, Nigeria Author
  • Alasinrin Yusuf Department of Agronomy, University of Ilorin, P. M. B. 1515, Ilorin, Nigeria Author
  • Hakeem Kuranga Department of Agronomy, University of Ilorin, P. M. B. 1515, Ilorin, Nigeria Author
  • Usman Magaji Department of Agronomy, Faculty of Agriculture, Federal University of Kashere, Gombe, Nigeria Author
  • Lawal M.T. Department of Crop Protection, University of Ilorin, P. M. B. 1515, Ilorin, Nigeria Author
  • Ahmed O. Department of Crop Protection, University of Ilorin, P. M. B. 1515, Ilorin, Nigeria Author
  • Lawal O.I. Department of Plant Physiology and Crop Production, Federal University of Agriculture, Abeokuta, Nigeria Author
  • Bello W. B. Department of Agricultural Technology, Oyo State College of Agriculture, P.M.B. 10, Igbo-ora, Oyo State, Nigeria Author
  • Salami T. B. Department of Agricultural Education, Emmanuel Alayande College of Education, Oyo, Oyo State, Nigeria Author
  • Ayeleke D.A. Federal Department of Agriculture, Federal Ministry of Agriculture and Rural Development, P.M.B. 135Area 11, Garki, Abuja. Author
  • Azeez K.O. Teaching and research Farm, University of Ilorin, P. M. B. 1515, Ilorin, Nigeria Author
  • Olaniyan J.O. Department of Agronomy, University of Ilorin, P. M. B. 1515, Ilorin, Nigeria Author
  • Affinnih K.O. Department of Agronomy, University of Ilorin, P. M. B. 1515, Ilorin, Nigeria Author
  • Olalekan K.K. Department of Agronomy, College Of Agriculture, Osun State University, P.M.B 4944, Osogbo, Osun State, Nigeria Author

Keywords:

Water deficit stress, okra, NPK partitioning, nutritional qualities, growth and yield

Abstract

This experiment was conducted to determine the effects of drought stress on growth yield, NPK partitioning and nutritional composition of okra. To achieve this objective, four levels of water deficit stress (daily (control), a day interval, two days interval and three days interval irrigation) were tested on 17Lucky19 (hybrid) okra variety in a pot experiment. The experiment was laid out randomized complete block design (RCBD) with three replications. Parameters used to determine the effects of water deficit stress were nitrogen, phosphorus and potassium contents of stems and leaves. Plant height, number of branches, number of leave, number of fruits, fresh fruit mass, dry straw mass, chlorophyll content, and proximate parameters (crude fat, crude fibre, crude protein and ash contents of the leaves) were also used. It was found that all the growth and yield parameters tested reduced with increase in water deficit levels. Similarly, all proximate parameters decreased with increase in water deficit levels with the exception of crude fibre which increased with increase in water deficit levels. In the same vein, nitrogen and potassium levels decreased with increase in water deficit levels in both leaves and stems. However, phosphorus levels in stems and leaves decreased with increase in water deficit levels. It is, therefore, concluded that 17Lucky19 is susceptible to water deficit stress. This implies that water deficit tolerant or resistant varieties should be used instead of 17Lucky19 whenever areas with irregular rainfall are to be used for cultivating this variety of okra.

References

Abdulrahman, F. A., & Nadir, H. A. (2018). Effect of water stress on okra yield at vegetative stage. Agric, 30(2), 111-116.

Albacete, A., Ghanem, M. E., Martínez-Andújar, C., Acosta, M., Sánchez-Bravo, J., Martínez, V., ... & Pérez-Alfocea, F. (2008). Hormonal changes in relation to biomass partitioning and shoot growth impairment in salinized tomato (Solanum lycopersicum L.) plants. J. Exp.Bot., 59(15), 4119-4131.

Ambede, J. G., Netondo, G. W., Mwai, G. N. & Musyimi, D. M. (2012). NaCl salinity affects germination, growth, physiology, and biochemistry of bambara groundnut. Braz. J.Plant Physiol., 24(3), 151-160.

Anjum, S. A., Wang, L. C., Farooq, M., Hussain, M., Xue, L. L., & Zou, C. M. (2011). Brassinolide application improves the drought tolerance in maize through modulation of enzymatic antioxidants and leaf gas exchange. Journal of Agronomy and crop science, 197(3), 177-185.

Anjum, S. A., Xie, X. Y., Wang, L. C., Saleem, M. F., Man, C., & Lei, W. (2011). Morphological, physiological and biochemical responses of plants to drought stress. African journal of agricultural research, 6(9), 2026-2032.

AOAC (1984) Official Methods of Analysis. Association of Official Analytical Chemists. 14th Edition, AOAC, Arlington.

Arshi, A., Abdin, M. Z., & Iqbal, M. (2005). Ameliorative effects of CaCl2 on growth, ionic relations, and proline content of senna under salinity stress. Journal of plant nutrition, 28(1), 101-125.

Bahreininejad, B., Nasr Esfahani, M., Lebaschyi, M. H., & Parsadoust, F. (2015). Evaluation of drought stress inCynara scolymus. Research report, Research Institute of Forests and Rangelands, Tehran, Iran.

Barnabás, B., Jäger, K., & Fehér, A. (2008). The effect of drought and heat stress on reproductive processes in cereals. Plant, cell & environment, 31(1), 11-38.

Bibi, A., Sadaqat, H. A., Tahir, M. H. N., Fatima Usman, B., & Ali, M. (2012). Genetic analysis of forage quality traitsin sorghum-sudangrass hybrids under water stress. The Journal of Animal and Plant Sciences, 22(4), 1092-1100.

Bista, D. R., Heckathorn, S. A., Jayawardena, D. M., Mishra, S., & Boldt, J. K. (2018). Effects of drought on nutrient uptake and the levels of nutrient-uptake proteins in roots of drought-sensitive and-tolerant grasses. Plants,7(2), 28.

Bradford, K. J., & Hsiao, T. C. (1982). Physiological responses to moderate water stress. In Physiological plant ecology II (pp. 263-324). Springer, Berlin, Heidelberg.

Bremner, J. M., & Mulvaney, C. S. (1982). Nitrogen–total. In ‘Methods of soil analysis, Part 2. Chemical and microbiological properties’, 2nd edn.(Eds AL Page, RH Miller, DR Keeney) pp. 595–624. Soil Science Society of America, Inc. and American Society of Agronomy, Inc.: Madison, WI.

Chang, S. K. C. (2003). Protein Analysis: Food Analysis, Nielson, S.S. (Ed.). Kluwer Academic Plenum Publisher, New York.

Demirevska, K., Zasheva, D., Dimitrov, R., Simova-Stoilova, L., Stamenova, M., & Feller, U. (2009). Drought stress effects on Rubisco in wheat: changes in the Rubisco large subunit. Acta Physiologiae Plantarum, 31(6), 1129-1138.

Dodd, I. C. (2005). Root-to-shoot signalling: assessing the roles of ‘up’in the up and down world of longdistance signalling in planta. Plant and soil, 274(1-2), 251-270, DOI:10.1007/s11104-004-0966-0

Essafi, N. E., Mounsif, M., Abousalim, A., Bendaou, M., Rachidai, A., & Gaboune, F. (2006). Impact of water stress on the fodder value of Atriplex halimus L. New Zealand Journal of Agricultural Research, 49(3), 321-329.

Ewetola, E. A., & Fasanmi, T. F. (2015). Growth responses of Okra (Albemoschus esculentus) and Jute mallow (Corchorus olitorius) to water stress and non-water stress conditions. International Letters of Chemistry, Physics and Astronomy, 59, 11.

Fariaszewska, A., Aper, J., Van Huylenbroeck, J., Baert, J., DeRiek, J., Staniak, M., & Pecio, Ł. (2016). Mild droughtstress-induced changes in yield, physiological processes and chemical composition in Festuca,Lolium and Festulolium. Journal of Agronomy and CropScience, 14, 1-14.

Farooq, M., Wahid, A., Kobayashi, N., Fujita, D., & Basra,S. M. A. (2009). Plant drought stress: Effects, mechanisms and management. Agronomy for Sustainable Development, 29(1), 185-212.

Flexas, J., Bota, J., Loreto, F., Cornic, G., & Sharkey, T. D. (2004). Diffusive and metabolic limitations to photosynthesis under drought and salinity in C3 plants. Plant biology, 6(3), 269-279.

Gauthami, P., Subrahmanyam, D., Padma, V., Rao, P. R., & Voleti, S. R. (2013). Influence of simulated post-anthesis water stress on stem dry matter remobilization, yield and its components in rice. Indian Journal of Plant Physiology, 18(2), 177-182.

Ghanem, M.E., Albacete, A., Martínez-Andújar, C., Acosta, M., Romero-Aranda, R., Dodd, I.C., ... & Pérez-Alfocea, F. (2008). Hormonal changes during salinity-induced leaf senescence in tomato (Solanum lycopersicum L.). J. Exp. Bot., 59(11), 3039-3050, DOI: 10.1093/jxb/ern153

Gu, U., Feng, X., Xia, B. (2008). Effect of water stress on growth and essential oil content of Atractylodes lancea rhizome. Journal of Plant Resources and Environment, 17(3), 23-27.

Guerfel, M., Baccouri, O., Boujnah, D., Chaïbi, W., & Zarrouk, M. (2009). Impacts of water stress on gas exchange, water relations, chlorophyll content and leaf structure in the two main Tunisian olive (Olea europaea L.) cultivars. Scientia Horticulturae, 119(3), 257-263.

Haji Hassani Asl, N., MoradiAghdam, A., AliabadiFarahani,H., Hosseini, N., & Rassaei Far, M. (2011). Three forageyield and its components under water deficit condition ondelay cropping in Khoy zone (Iran). Advance in Environmental Biology, 5(5), 847-852.

Hale, M. G., Orcutt, D. M. (1987). The physiologyof plants under stress. John Wiley and Sons Inc. New York.

Harris, D., Tripathi, R. S., & Joshi, A. (2002). On-farm seed priming to improve crop establishment and yield in dry direct-seeded rice. Direct seeding: Research Strategies and Opportunities, International Research Institute, Manila, Philippines, 231-240.

Hasegawa, P. M., Bressan, R. A., Zhu, J. K., & Bohnert, H. J. (2000). Plant cellular and molecular responses to high salinity. Annual review of plant biology, 51(1), 463-499.

Hunshal, C. S., Viswanath, D. P., Chimmad, V. P., & Gali, S. K. (1991). Performance of groundnut genotypes under saline water irrigation. Journal-Maharashtra Agricultural Universities, 16, 116-117.

Hussain, M., Malik, M. A., Farooq, M., Ashraf, M. Y., & Cheema, M. A. (2008). Improving drought tolerance by exogenous application of glycinebetaine and salicylic acid in sunflower. Journal of Agronomy and Crop Science, 194(3), 193-199.

Hussein, H. A., Metwally, A. K., Farghaly, K. A., & Bahawirth, M. A. (2011). Effect of irrigation interval (water stress) on vegetative growth and yield in two genotypes of okra. Australian Journal of Basic and Applied Sciences, 5(12), 3024-3032.

Iturbe-Ormaetxe, I., Escuredo, P. R., Arrese-Igor, C., & Becana, M. (1998). Oxidative damage in pea plants exposed to water deficit or paraquat. Plant physiology, 116(1), 173-181.

James, C. J. (1995). The Analytical Chemistry of Foods. Chapman and Hall Press, New York. Page 86.

Kaiser, W. M., Kaiser, G., Schöner, S., & Neimanis, S. (1981). Photosynthesis under osmotic stress: differential recovery of photosynthetic activities of stroma enzymes, intact chloroplasts, protoplasts, and leaf slices after exposure to high solute concentrations. Planta, 430-435.

Kallida, R., Al Faiz, C., & Shaimi, N. (2008). Water stress effects on perennial grasses growth and behaviour. Options Méditerranéennes Serie A, 79, 309-313.

Kaspar, T. C., Timmons, D. R., & Zahler, J. B. (1989). Soybean response to phosphorus and potassium fertilizers as affected by soil drying. Soil Science Society of America Journal, 53(5), 1448-1454.

Khalil, Z. M., Salem, A. K., & Sultan, F. M. (2015). Waterstress tolerance of fodder cowpea as influenced by variousadded levels of potassium sulphate. Journal of Soil Sciences and Agricultural Engineering, 6(2), 213-231.

Khan, M. B., Hussain, N., & Iqbal, M. (2001). Effect of water stress on growth and yield components of maize variety YHS 202. Journal of Research Science, 12(1), 15-18.

Kirk, B., Sawyer, S. (1980). Pearson’s Food Composition and Analysis. Longman, England. Page 34.

Lambers, H., Chapin III, F. S., & Pons, T. L. (2008). Plant physiological ecology. Springer Science & Business Media.

Manivannan, P., Jaleel, C. A., Sankar, B., Kishorekumar, A., Somasundaram, R., Lakshmanan, G. A., & Panneerselvam, R. (2007). Growth, biochemical modifications and proline metabolism in Helianthus annuus L. as induced by drought stress. Colloids and Surfaces B: Biointerfaces, 59(2), 141-149.

Manivannan, P., Jaleel, C. A., Somasundaram, R., & Panneerselvam, R. (2008). Osmoregulation and antioxidant metabolism in drought-stressed Helianthus annuus under triadimefon drenching. Comptes Rendus Biologies, 331(6), 418-425.

Martins Júnior, R. R., Oliveira, M. S. C., Baccache, M. A., & Paula, F. M. D. (2008). Effects of water deficit and rehydration on the polar lipid and membranes resistance leaves of Phaseolus vulgaris L. cv. Pérola. Brazilian Archives of Biology and Technology, 51(2), 361-367.

Medrano, H., Escalona, J. M., Bota, J., Gulías, J., & Flexas, J. (2002). Regulation of photosynthesis of C3 plants in response to progressive drought: stomatal conductance as a reference parameter. Annals of botany, 89(7), 895-905.

Munns, R. (2002). Comparative physiology of salt and water stress. Plant, cell & environment, 25(2), 239-250.

Munns, R., & Tester, M. (2008). Mechanisms of salinity tolerance. Annu. Rev. Plant Biol., 59, 651-681.

Nahar, K., & Ullah, S. M. (2011). Effect of water stress on moisture content distribution in soil and morphological characters of two tomato (Lycopersicon esculentum Mill) cultivars. Journal of Scientific Research, 3(3), 677-682.

Nam, N. H., Subbarao, G. V., Chauhan, Y. S., & Johansen, C. (1998). Importance of canopy attributes in determining dry matter accumulation of pigeonpea under contrasting moisture regimes. Crop science, 38(4), 955-961.

Navetiyal, R. C. (1989). Germination and early seedling growth of some ground nut (Arachis hypogea L.) cultivars under salt stress. Indian J. Plant Physiol., 32, 251-253.

Neumann, P. M. (1993). Wall extensibility and the growth of salt stressed leaves. In Interacting Stresses on Plants in a Changing Climate (pp. 603-615). Springer, Berlin, Heidelberg.

Ngoc, T., Ngo, N., Van, T., & Phung, V. (2008). Hypolipidemic effect of extracts from Abelmoschus esculentus L. (Malvaceae) on Tyloxapol-induced hyperlipidemia in mice. Warasan Phesatchasat, 35, 42–46.

Nonami, H. (1998). Plant water relations and control of cell elongation at low water potentials. J. Plant Res., 111, 373-382.

Onwugbuta-Enyi, J. (2004). Water balance and proximate composition in cowpea (Vigna unguiculata (L) Walp.) seedlings exposed to drought and flooding stress. Journal of Applied Sciences and Environmental Management, 8, 55-57.

Onwugbuta-Enyi, J. (1996). Effect of water on germination and growth of Abelmoschus esculentus. Annals of Agricultural Research, 17(4), 393-396.

Osuagwu, G. G. E., & Edeoga, H. O. (2013). The effect ofwater stress (drought) on the proximate composition of theleaves of Ocimum gratissimum (L) and Gongronemalatifolium (Benth). International Journal of Medicinal and Aromatic Plants, 3(2), 293-299.

Ozturk, A., Aydin, F. (2004). Effect of water stress at various growth stage on some quality characteristics of winter wheat. Journal of Agronomy and Crop Science, 190(2), 93-99.

Parida, A. K., Dagaonkar, V. S., Phalak, M. S., Umalkar, G. V., Aurangabadkar, L. P. (2007). Alteration in photosynthetic pigments, protein and osmotic components in cotton genotype subjected to short-term drought stress followed by recovery. Plant Biotechnology Reports, 1(1), 37-48

Perrier, L., Rouan, L., Jaffuel, S., Clement-Vidal, A., Roques,S., Soutiras. A., Baptiste, C., Bastianelli, D., Fabre, D.,Dubois, C., Pot, D., & Luquet, D. (2017). Plasticity of sorghum stem biomass accumulation in response to waterdeficit, a multiscale analysis from internode tissue to plant level. Frontiers in Plant Science, 8, 1-14.

Pessarakli, M., & Tucker, T. C. (1988). Dry matter yield and nitrogen-15uptake by tomatoes under sodium chloride stress. Soil Sci.Soc.Am.J.,52(3), 698-700

Praba, M. L., Cairns, J. E., Babu, R. C., & Lafitte, H. R. (2009). Identification of physiological traits underlying cultivar differences in drought tolerance in rice and wheat. Journal of Agronomy and Crop Science, 195(1), 30-46.

Ranjbarfordoei, A., Samson, R., Van Damme, P., & Lemeur, R. (2000). Effects of drought stress induced by polyethylene glycol on pigment content and photosynthetic gas exchange of Pistacia khinjuk and P. mutica. Photosynthetica, 38(3), 443-447.

Robredo, A., Pérez-López, U., Miranda-Apodaca, J., Lacuesta, M., Mena-Petite, A., & Muñoz-Rueda, A. (2011). Elevated CO2 reduces the drought effect on nitrogen metabolism in barley plants during drought and subsequent recovery. Environmental and Experimental Botany, 71(3), 399-408.

Rostamza, M., Chaichi, M. R., Jahansouz, M. R., & Alimadadi,A. (2011). Forage quality, water use and nitrogen utilization efficiencies of pearl millet (Pennisetum americanum L.) grown under different soil moisture and nitrogen levels. Agricultural Water Management, 98,1607-1614.

Rouphael, Y.; Cardarelli, M.; Schwarz, D.; Franken, P.; Colla, G. (2012) Effects of drought on nutrient uptake and assimilation in vegetable crops. In Plant Responses to Drought Stress; Aroca, R., Ed.; Springer: Berlin, Germany, pp. 171–195.

Rucker, K. S., Kvien, C. K., Holbrook, C. C., & Hook, J. E. (1995). Identification of peanut genotypes with improved drought avoidance traits. Peanut science, 22(1), 14-18.

Saberi, A. R., Kiani, A. R., Mosavat, S. A., & Halim, R. A. (2012). The effect of different sowing patterns and deficit irrigation management on yield and agronomic characteristics of sweet corn. African Journal of Biotechnology, 11(74), 13882-13887.

Ahmad, S., Mahmood, A., Malik, A. J., Karim, A., & Kumbhar, M. B. (2003). Response of okra to water stress. Sarhad Journal of Agriculture (Pakistan),19(1), 73-79.

Saeidnia, F., Majidi, M. M., Mirlohi, A., & Ahmadi, B. (2018). Physiological responses of drought tolerance in orchardgrass (Dactylis glomerata) in association withpersistence and summer dormancy. Crop & Pasture Science, 69(5), 515-526.

Sanaullah, M., Rumpel, C., Charrier, X., & Chabbi, A. (2012). How does drought stress influence the decomposition of plant litter with contrasting quality in a grassland ecosystem?. Plant and Soil, 352(1-2), 277-288.

Saneoka, H., Moghaieb, R. E., Premachandra, G. S., & Fujita, K. (2004). Nitrogen nutrition and water stress effects on cell membrane stability and leaf water relations in Agrostis palustris Huds. Environmental and Experimental Botany, 52(2), 131-138.

Sardans, J., & Peñuelas, J. (2012). The role of plants in the effects of global change on nutrient availability and stoichiometry in the plant-soil system. Plant physiology, 160(4), 1741-1761.

Sengupta, S., & Majumder, A. L. (2009). Insight into the salt tolerance factors of a wild halophytic rice, Porteresia coarctata: a physiological and proteomic approach. Planta, 229(4), 911-929.

Shoaei, S., & Rafiei, F. (2014). Investigation ofSuperabsorbent Polymer and Water Stress on PhysiologicalIndexes of Maize. Journal of Advances in Biology, 4(3),455-460.

Singh, G., Singh, S., Singh, J. (2004). Optimization of Energy Inputs for Wheat Crop in Punjab. Energy Conversion and Management, 45, 453- 465

Smirnoff, N. (1995). Environment and plant metabolism, flexibility and acclimation. Bios Scientific Publishers, Oxford, UK.

Sobrado, M. A., Turner, N. C. (1986). Photosynthesis,dry matter accumulation and distribution in the wild sunflower Helianthuspetiolaris and distribution in cultivated sunflower Helianthus annus as influenced by water deficits. Oecologia (Berlin), 69, 181– 187.

Sodeinde, F. G., Oladipo, M. A., Odunsi, A., A., Asaolu, V. O., Amao, S. R. (2007). Mineral and feeding values of two cultivars of guinea grass (Panicum maximum) as influenced by soil type in the derived savanna zone of Nigeria. Agricultural Journals, 12(2), 226 – 230

Specht, J. E., Chase, K., Macrander, M., Graef, G. L., Chung, J., Markwell, J. P., ... & Lark, K. G. (2001). Soybean response to water: a QTL analysis of drought tolerance. Crop Science, 41(2), 493-509.

Steudle, E. (2000). Water uptake by roots, effects of water deficit. Journal of Experimental Botany, 51, 1531-1542.

Stewart, J. R., Landes, R. D., Koeser, A. K., Pettay, A. L. (2007). Net photosynthesis and growth of three novel woody species under water stress; Calycantyhus occidentalis, Fraxinus anomala and Pinckneya pubens. Horticultural Sciences, 42(6), 1341-1345.

Sumithra, K., Rasineni, G. K. and Reddy, A. R. (2007). Photosynthesis and antioxidative metabolism in cowpea grown under varying water deficit regimes. Journal of Plant Biology, 34, 57-65.

Tawfik, K. M. (2008). Effect of water stress on addition to potassiomag as application on mung bean. Australian Journal of basic and Applied Sciences, 2(1), 42-52.

Turan, M. A., Turkmen, N., & Taban, N. (2007). Effect of NaCl on stomatal resistance and proline, chlorophyll, Na, Cl and K concentrations of lentil plants. Journal of Agronomy, 378-381.

Wahid, A., & Rasul, E. (1997). Identification of salt tolerance traits in sugarcane lines. Field Crops Research, 54(1), 9-17.

Wullschleger, S. D., Yin, T. M., DiFazio, S. P., Tschaplinski, T. J., Gunter, L. E., Davis, M. F., & Tuskan, G. A. (2005). Phenotypic variation in growth and biomass distribution for two advanced-generation pedigrees of hybrid poplar. Canadian Journal of Forest Research, 35(8), 1779-1789.

Xu, S., An, L., Feng, H., Wang, X., & Li, X. (2002). The seasonal effects of water stress on Ammopiptanthus mongolicus in a desert environment. Journal of arid environments, 51(3), 437-447.

Yadav, R. S., Hash, C. T., Bidinger, F. R., Devos, K. M., & Howarth, C. J. (2004). Genomic regions associated with grain yield and aspects of post-flowering drought tolerance in pearl millet across stress environments and tester background. Euphytica, 136(3), 265-277.

Yeo, A. R., Lee, Λ. S., Izard, P., Boursier, P. J., & Flowers, T. J. (1991). Short-and long-term effects of salinity on leaf growth in rice (Oryza sativa L.). Journal of Experimental Botany, 42(7), 881-889, DOI:10.1093/jxb/42.7.881

Younis, M. E., Hasaneen, M. N., & Kazamel, A. M. (2010). Exogenously applied ascorbic acid ameliorates detrimental effects of NaCl and mannitol stress in Vicia faba seedlings. Protoplasma, 239(1-4), 39-48.

Yu, Y., Song, C., Zhang, Q., DiMaggio, P. A., Garcia, B. A., York, A., ... & Grunstein, M. (2012). Histone H3 lysine 56 methylation regulates DNA replication through its interaction with PCNA. Molecular cell, 46(1), 7-17.

Zhang, J., & Kirkham, M. B. (1996). Antioxidant responses to drought in sunflower and sorghum seedlings. New phytologist, 132(3), 361-373.

Zhang, J., Smith, D. L., Liu, W., Chen, X., & Yang, W. (2011). Effects of shade and drought stress on soybean hormones and yield of main-stem and branch. African Journal of Biotechnology, 10(65), 14392-14398.

Zhao, T. J., Sun, S., Liu, Y., Liu, J. M., Liu, Q., Yan, Y. B., & Zhou, H. M. (2006). Regulating the drought-responsive element (DRE)-mediated signaling pathway by synergic functions of trans-active and trans-inactive DRE binding factors in Brassica napus. Journal of Biological Chemistry, 281(16), 10752-10759.

Zubaer, M. A., Chowdhury, A. K. M. M. B., Islam, M. Z., Ahmed, T., & Hasan, M. A. (2007). Effects of water stress on growth and yield attributes of aman rice genotypes. International Journal of Sustainable Crop Production, 2(6), 25-30.

Downloads

Published

21-12-2020

How to Cite

NPK partitioning, growth, yield and proximate composition of okra (Abelmoschus esculentus) under water deficit stress. (2020). Bulgarian Journal of Soil Science, Agrochemistry and Ecology, 54(4), 3-24. https://agriacad.eu/ojs/index.php/bjssae/article/view/1682