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Seed yield and water use efficiency of canola (Brassica napus L.) as affected by high temperature stress and supplemental irrigation

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  • Faraji, Abolfazl
  • Latifi, Nasser
  • Soltani, Afshin
  • Rad, Amir Hossain Shirani

Abstract

The effects of high temperature stress and supplemental irrigation on seed yield and water use efficiency (WUE) of canola (Brassica napus L.) were studied in a field experiment conducted for 2 years. The experiment was a randomized complete block design arranged in split plot, conducted at Agricultural Research Station of Gonbad, Iran. It was arranged in two conditions, i.e. supplemental irrigation and rainfed. Two cultivars of canola (Hyola401 and RGS003) as subplots were grown at five sowing dates as main plots. The sowing dates were 9 November, 6 December, 5 January, 4 February and 6 March in 2005-2006 and 6 November, 6 December, 5 January, 4 February and 6 March in 2006-2007, to have a wide range of environmental conditions around flowering and seed filling periods, and to coincide reproductive stages of the crop with high temperature stress. Seed yield was improved due to field management practices, such as supplemental irrigation and optimum sowing date. Supplemental irrigation was an efficient practice to mitigate water stress, and to increase aboveground dry matter and seed yield. There was a strongly negative relationship between seed yield and air temperature during reproductive stages. Delay in sowing led to more rapid developmental of canola, decreased aboveground dry matter, leaf area index (LAI), harvest index (HI), WUE, and seed yield. Achieving a high aboveground dry matter was an essential prerequisite for high reproductive growth and a high seed yield. Greater seed yield and WUE at first sowing date were associated with greater LAI and aboveground dry matter, and lower temperatures during reproductive stages. The results support the view that WUE can be used as an indirect selection criterion for seed yield in genotypic selection.

Suggested Citation

  • Faraji, Abolfazl & Latifi, Nasser & Soltani, Afshin & Rad, Amir Hossain Shirani, 2009. "Seed yield and water use efficiency of canola (Brassica napus L.) as affected by high temperature stress and supplemental irrigation," Agricultural Water Management, Elsevier, vol. 96(1), pages 132-140, January.
    • Handle: RePEc:eee:agiwat:v:96:y:2009:i:1:p:132-140
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    1. Oweis, Theib & Hachum, Ahmed & Pala, Mustafa, 2004. "Lentil production under supplemental irrigation in a Mediterranean environment," Agricultural Water Management, Elsevier, vol. 68(3), pages 251-265, August.
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    2. Kamkar, B. & Daneshmand, A.R. & Ghooshchi, F. & Shiranirad, A.H. & Safahani Langeroudi, A.R., 2011. "The effects of irrigation regimes and nitrogen rates on some agronomic traits of canola under a semiarid environment," Agricultural Water Management, Elsevier, vol. 98(6), pages 1005-1012, April.
    3. Ahmad Zeeshan Bhatti & Aitazaz Ahsan Farooque & Nicholas Krouglicof & Qing Li & Wayne Peters & Farhat Abbas & Bishnu Acharya, 2021. "An Overview of Climate Change Induced Hydrological Variations in Canada for Irrigation Strategies," Sustainability, MDPI, vol. 13(9), pages 1-15, April.
    4. George, Nicholas & Thompson, Sally E. & Hollingsworth, Joy & Orloff, Steven & Kaffka, Stephen, 2018. "Measurement and simulation of water-use by canola and camelina under cool-season conditions in California," Agricultural Water Management, Elsevier, vol. 196(C), pages 15-23.
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    6. Dariusz Antoni Groth & Mateusz Sokólski & Krzysztof Józef Jankowski, 2020. "A Multi-Criteria Evaluation of the Effectiveness of Nitrogen and Sulfur Fertilization in Different Cultivars of Winter Rapeseed—Productivity, Economic and Energy Balance," Energies, MDPI, vol. 13(18), pages 1-38, September.
    7. Mahmood, A. & Oweis, T. & Ashraf, M. & Majid, A. & Aftab, M. & Aadal, N.K. & Ahmad, I., 2015. "Performance of improved practices in farmers’ fields under rainfed and supplemental irrigation systems in a semi-arid area of Pakistan," Agricultural Water Management, Elsevier, vol. 155(C), pages 1-10.

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