Change in oil fatty acids composition of winter oilseed rape genotypes under drought stress and different temperature regimes
To assess the response of winter oilseed rape promising line genotypes to late-season drought stress in delayed cultivation conditions and select the superior genotypes, an experiment was conducted for two years (2015–16 and 2016–17) in Iran (Karaj). In this experiment, the sowing date was specified in two levels including timely cultivation (October 7) and delayed cultivation (October 27) and irrigation factor including normal irrigation and irrigation interruption from podding stage as factorial in main plots and four winter oilseed rape genotypes (L1030, L1204, L1110, and L1114) and a commercial cultivar (Okapi) were categorized in subplots. Applying drought stress after the podding stage declined the seed yield and seed oil yield, and the highest and lowest mean of these traits were observed in the L1204 and L1114 genotypes, respectively. The interaction effect of the sowing date × genotype on all the studied traits was significant. With the standard erucic acid, the genotype L1204 in both normal and delayed sowing dates had the highest seed yield of 5118 and 3015 kg/ha. Besides, with high oleic acid with a mean of 63.65% and the minimum amount of glucosinolate of seed with a mean of 21.55 μmol/g, this genotype is recommended in delayed cultivation conditions.
Aslam M.N., Nelson M.N., Kailis S.G., Bayliss K.L., Speijers J., 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: 348–355. https://doi.org/10.1111/j.1439-0523.2008.01577.x
Azadmard-Damirchi S.A., Savage G.P., Dutta P.C. (2005): Sterol fractions in hazelnut and virgin olive oils and 4,4'-dimethylstrols as possible markers for detection of adulteration of virgin olive oil. Journal of the American Oil Chemists’ Society, 82: 717–725. https://doi.org/10.1007/s11746-005-1133-y
Bashir M.U., Akbar N., Iqbal A., Zaman H. (2010): Effect of different sowing dates on yield and yield components of direct seeded coarse rice (Oryza sativa L). Pakistan Journal of Agricultural Sciences, 74: 361–365.
Darby H., Harwood H., Cummings E., Madden R., Monahan S. (2013): Winter Canola Planting Date Trial. Technical Report. Burlington, University of Vermont, 10.
Hugly S., Kunst L., Browse J., Somerville C. (1989): Enhanced thermal tolerance of photosynthesis and altered chloroplast ultrastructure in a mutant of Arabidopsis deficient in lipid desaturation. Plant Physiology, 90: 1134–1142. https://doi.org/10.1104/pp.90.3.1134
Makkar H.P.S., Siddhuraju P., Becker K. (2007): Plant Secondary Metabolites. Totowa, Humana Press.
Jaberi H., Lotfi B., Jamshidnia T., Fathi A., Olad R., Abdollahi A. (2015): Survey of yield of winter canola cultivars under drought stress on the yield at four different phonological stages. Scientia Agriculturae, 12: 144–148.
Kauser R., Athar H.R., Ashraf M. (2006): Chlorophyll fluorescence: A potential indicator for rapid assessment of water stress tolerance in canola (Brassica napus L.). Pakistan Journal of Botany, 38: 1501–1509.
McConn M., Browse J. (1996): The critical requirement for linolenic acid is pollen development, not photosynthesis, in an Arabidopsis mutant. Plant Cell, 8: 403–416. https://doi.org/10.2307/3870321
Moradi Aghdam A., Sayfzadeh S., Shirani Rad A.H., Valadabadi S.A., Zakerin H.R. (2019): The assessment of water stress and delay cropping on quantitative and qualitative traits of rapeseed genotypes. Industrial Crops and Products, 131: 160–165. https://doi.org/10.1016/j.indcrop.2019.01.051
Rafiei S., Delkhosh B., Shirani Rad A.H., Zandi P. (2011): Effect of sowing dates and irrigation regimes on agronomic traits of Indian mustard in semi-arid area of Takestan. Journal of American Science, 7: 721–728.
Robertson M.J., Holland J.F., Bambach R.W. (2004): Response of canola and Indian mustard to sowing date in the grain belt of north-eastern Australia. Australian Journal of Experimental Agriculture, 44: 43–52. https://doi.org/10.1071/EA02214
Safavi Fard N., Sharif Abad H.H., Shirani Rad A.H., Majidi Heravan E., Daneshian J. (2018): Effect of drought stress on qualitative characteristics of canola cultivars in winter cultivation. Industrial Crops and Products, 114: 87–92. https://doi.org/10.1016/j.indcrop.2018.01.082
Shahsavari N. (2019): Effects of zeolite and zinc on quality of canola (Brassica napus L.) under late season drought stress. Communications in Soil Science and Plant Analysis, 50: 1117–1122. https://doi.org/10.1080/00103624.2019.1604729
Shahsavari N., Jais H.M., Shirani Rad A.H. (2014a): Responses of canola morphological and agronomic characteristics to zeolite and zinc fertilization under drought stress. Communications in Soil Science and Plant Analysis, 45: 1813–1822. https://doi.org/10.1080/00103624.2013.875207
Shahsavari N., Jais H.M., Shirani Rad A.H. (2014b): Responses of canola oil quality characteristics and fatty acid composition to zeolite and zinc fertilization under drought stress. International Journal of AgriScience, 4: 49–59.
Shirani Rad A.H., Shahsavari N., Safavi Fard N. (2017): Response of canola advanced lines to delay plantings upon late season drought stress. Journal of Scientific Agriculture, 1: 307–313. https://doi.org/10.25081/jsa.2017.v1.837
Salisbury P., Sang J., Cawood R. (1987): Genetic and environmental factors influencing glucosinolate content in rapeseed in southern Australia. In: Proceedings of the 7th International rapeseed congress, Poland. The Plant Breeding and Acclimatization Institute, Poznan, 516–520.
Sun X.P., Yan H.L., Kang X.Y., 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: 404–410. https://doi.org/10.1007/s11099-013-0040-3
Ullah F., Bano A., Nosheen A. (2012): Effects of plant growth regulators on growth and oil quality of canola (Brassica napus L.) under drought stress. Pakistan Journal of Botany, 44: 1873–1880.
Ul-Hassan F., Ali H., Akhtar Cheema M., Manaf A. (2005): Effects of environmental variation on oil content and fatty acid composition of canola cultivars. Journal of Research (Science), Bahauddin Zakariya University, Multan, Pakistan, 16: 65–72.
Zarei G., Shamsi H., Dehghani S.M. (2010): The effect of drought stress on yield, yield components and seed oil content of three autumnal rapeseed cultivars (Brassica napus L.). Journal of Research in Agricultural Science, 6: 29–36.