Changes in the oil fatty acids composition of rapeseed cultivars under drought stress conditions

Jabbari, Hamid; Khosh Kholgh Sima, Nayer Azam; Shirani Rad, Amir Hosein

doi:10.22092/aj.2018.116547.1226

	Changes in the oil fatty acids composition of rapeseed cultivars under drought stress conditions
پژوهش های کاربردی زراعی
Article 5, Volume 30, Issue 3 - Serial Number 116, September 2017, Pages 66-81 PDF (488.43 K)
Document Type: Research Paper
DOI: 10.22092/aj.2018.116547.1226
Authors
hamid jabbari^* ¹; Nayer Azam Khosh Kholgh Sima²; Amir Hosein Shirani Rad³
¹oil seed research department, Seed and plant improvment Institute
²Agriculture Biotechnology Research Institute of Iran (ABRII), Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran
³Professor of Seed and Plant Improvement Institute, AREEO, Karaj, Iran.Agriculture and Natural
Abstract
Introduction: Plants are exposed to various environmental stresses, such as drought, salinity and high or low temperatures. Amongst, drought is the most serious problem for global agriculture, approximately affecting 40% of the world’s land area (Zhang et al., 2014). Furthermore, climate change is likely to lead to changes in global temperature and precipitations patterns in some parts of the world, which will have a dramatic impact on crop growth and productivity (Trenberth et al., 2014). Thus, there is an urgent need to develop varieties that can maintain optimum yield levels under drought conditions. Water is one of the major limiting factors affecting plant growth, development and yield, especially in arid and semi-arid regions, where plants are often exposed to periods of water shortage (drought stress).Iran is a vast country with different of climate conditions. It is estimated that approximately 85% of Iran is located in arid, semi-arid or hyper arid regions. It has been reported that annual rainfall, number of rainy-days and monthly rainfall have been significantly decreased in the last few decades, in arid and semi-arid regions of the world and Iran (Modarres & da Silva, 2007). Among the oilseed crops, Brassica species are more affected by drought, as these crops are mainly grown in arid and semiarid areas. Oilseed rape growth and seed production decrease by drought stress. Under drought stress, the percentage of saturated fatty acids decreased, that could be explained by a shorter growing period, and oil yield also decreased. Fatty acid metabolism may be involved in plant adaptation to drought stress. The objective of the present study was to evaluateoil fatty acids composition of Rapeseed cultivars under drought stress conditions in different growth stages Materials and Methods: The experiment was conducted as a split-plot based on a randomized complete block design with three replications at Yazd, Iran in 2011-2012 growing season. Irrigation treatments including control (irrigation after 80 mm evaporation from evaporation pan class A) and drought stress (irrigation withholding starting from stem elongation, flowering and silique formation stages until physiological maturity stages) were allocated to the main plots and three winter type rapeseed cultivars (GKH2005, Opera and Okapi) were considered as the subplots. The measured traits included Oil percentage, Oleic acid, Linoleic acid, Linolenic acid Palmitic acid, Palmitic acid, Gadoleic acid, Stearic acid, Arachidonic acid, Palmitoleic acid, Erucic acid, seed yield and oil yield.SAS statistical software used for data analysis and means were compared with LSD test at 5% probability level. Results and Discussion: The results showed that oleic acid content of rapeseed oil varied from 64 to 68 percent and linoleic acid varied from 15 to 18 percent. Among the three saturated fatty acids (palmitic, stearic and Arachidonic), the irrigation effect was only on Arachidonic acid and among the six unsaturated fatty acids (Palmitoleic, oleic, linoleic, linolenic, Gadoleic and Erucic) the effect of irrigation only on oleic fatty acids, Linoleic and linolenic were meaningful. Irrigation withholding from developmental stages significantly increased oleic acid compared to control treatment, while the amount of linoleic acid decreased significantly. The response of three rapeseed cultivars to irrigation levels for Linoleic fatty acid was different and GKH2005 had the higher linoleic acid, under all of drought stress treatments. Among three cultivars, the highest seed yield was observed in GKH2005 (2211 kg.ha-1). Conclusions: In general, it seems the withholding irrigation resulted in enhanced oleic acid compared to linoleic, in fatty acids composition of rapeseed oil. Moreover, among rapeseed varieties, there was a significant difference in oil fatty acids content. Our findings indicated that GKH2005 had higher seed yield and good quality of fatty acid oils in drought stress than other cultivars.
Keywords
Oleic acid; Linoleic acid; Linolenic acid and Seed yield

References
Akhzari, D. and Pessarakli, M. 2015. Effect of Drought Stress on Total Protein, Essential Oil Content, and Physiological Traits of Levisticum Officinale Koch. Journal of Plant Nutrition, 39 (10): 1365-1371. doi: http://dx.doi.org/10.1080/01904167.2015.1109125 Aslam, M. N., Nelson, M. N. Kailis, S. G. Bayliss, K. L. Speijers, J. and Cowling, W. A. 2009. Canola oil increases in polyunsaturated fatty acids and decreases in oleic acid in drought-stressed Mediterranean-type environments. Plant Breeding, 128 (4): 348-355. doi: http://dx.doi.org/10.1111/j.1439-0523.2008.01577 Azizi, M., Soltani, A. and Khavari Khorasani, S. 1999. Canola (Physiology, Agronomy, Breeding and Biotechnology). Jahad Daneshgahi of Mashhad, University of Ferdowsi, 230 P. (In Persian). Bannayan, M., Sanjani, S. Alizadeh, A. Lotfabadi, S. and Mohammadian, A. 2010. Association between climate indices, aridity index, and rainfed crop yield in northeast of Iran. Field Crops Research, 118 (2): 105-114. doi: http://dx.doi.org/10.1016/j.fcr.2010.04.011 Berry, E. M., and Rivlin, R. S. 1997. Dietary fatty acids in the management of diabetes mellitus. American Journal of Clinical Nutrition, 66 (4): 991-997. Bitarafan, Z., and Shirani Rad, A. H. 2012. Water stress effect on spring rapeseed cultivars yield and yield components in winter planting. International Journal of Physical Science, 7(19): 2755-2767. doi: http://dx.doi.org/10.5897/IJPS12.221 Canola Council of Canada. 1990. Chapter 3, growth stages. http://www.canada.council.org. (accessed 20 November 2017). Enjalbert, J. N., Zheng, S. Johnson, J. J. Mullen, J. L. Byrne, P. F. and McKay, J. K. 2013. Brassicaceae germplasm diversity for agronomic and seed quality traits under drought stress. Industrial Crops and Products, 47: 176–185. doi: http://dx.doi.org/ 10.1016/j.indcrop.2013.02.037 Faraji, A., Lattifi, N. Solatni, A. and Shirani Rad, A. H. 2009. Seed yield and water use efficiency of canola as affected by high temperature stress and supplemental irrigation. Agricultural Water Management, 96: 132-140. doi: http://dx.doi.org/ 10.1016/j.agwat.2008.07.014 Javidfar, F., Reipley, F. Zeinaly, H. Abdmishani, S. Shah Nejat Boushehri, A. A. Tavakol Afshari, R. Alizadeh, B. and Jafarieh, E. 2007. Heritability of fatty acids composition in spring oilseed rape (Brassica napus L.). Journal of Agriculture and Science, 17(3): 57-64. (In Persian with English Summary). Kadivar, S. H., Ghavami, M. Gharachorloo, M. and Delkhosh, B. 2010. Chemical Evaluation of Oil Extracted from Different Varieties of Colza. Food Technology & Nutrition, 7 (2): 19-29. (In Persian with English Summary). Modarres, R., and de Paulo Rodrigues da Silva, V. 2007. Rainfall trends in arid and semi-arid regions of Iran. Journal of Arid Environments, 70 (2), 344-355. doi: http://dx.doi.org/10.1016/j.jaridenv.2006.12.024 Nasr, N., Khayami, M. Heidary, R. and Jameie, R. 2006. Genetic diversity among selected varieties of Brassica napus (Cruciferea) based on biochemical composition of seeds. Journal of Science and Technology of Agriculture and Natural Resources, Water and Soil Science, 32(1), 37-40. (In Persian with English Summary). Pospisil, M., Skevin, D. Mustapic, Z. Nakic, N. Butorac, J. and Matijevic, D. 2007. Fatty acid composition in oil of recent rapeseed hybrids and 00-cultivars. Agriculturae Conspectus Scientificus, 72(3): 187-193. doi: http://dx.doi.org/hrcak.srce.hr/17086 Singh, S. and Sinha, S. 2005. Accumulation of metals and its effects in (Brassica juncea L.) Czern. (cv. Rohini) grown on various amendments of tannery waste. Ecotoxicology and Environmental Safety, 62 (1): 118-127. doi: http://dx.doi.org/10.1016/j.ecoenv.2004.12.026 Soleymani, A., Moradi, M. and Naranjani, L. 2011. Effects of The Irrigation Cut-off Time in Different Growth Stages on Grain and Oil Yield Components of Autumn’s Canola Cultivars in Isfahan Region. Journal of Water and Soil, 25 (3): 426-435. (In Persian with English Summary). Sun, X. P., Yan, H. L. Kang, X. Y. and Ma, F. W. 2013. Growth, gas exchange, and water-use efficiency response of two young apple cultivars to drought stress in two scion-one rootstock grafting system. Photosynthetica, 51 (3): 404-410. doi: http://dx.doi.org/10.1007/s11099-013-0040-3 Tohidi-Moghaddam, H. R., Zahedi, H. and Ghooshchi, F. 2011. Oil quality of canola cultivars in response to water stress and super absorbent polymer application. Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics), 41 (4): 579-586. doi: http://dx.doi.org/10.5216/pat.v41i4.13366 Trenberth, K. E., Dai, A. Van der Schrier, G. Jones, P. D. Barichivich, J. Briffa, K. R. and Sheffield, J. 2014. Global warming and changes in drought. ‎Nature Climate Change, 4: 17-22. doi: http://dx.doi.org/10.1038/NCLIMATE2067 Zhang, X., Lu, G. Long, W. Zou, X. Li, F. Ni and shio, T. 2014. Recent progress in drought and salt tolerance studies in Brassica crops. Breeding Science, 64 (1): 60-73. doi: http://dx.doi.org/10.1270/jsbbs.64.60
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Changes in the oil fatty acids composition of rapeseed cultivars under drought stress conditions