In the pot experiment, the effects of a moderate soil drought during the earing-flowering period on CO2 and H2O gas exchange parameters and chlorophyll content in flag leaf and their relations to grain productivity in winter wheat varieties of different drought resistance were studied. The inhibition of photosynthetic activity and a decrease in chlorophyll content under drought were accompanied by a reduction in grain productivity of plants. Strong positive correlations (r = 0,78…0,97) between the content of chlorophyll, the rate of transpiration and photosynthesis and main shoot grain productivity were observed. The results suggest that the changes in photosynthetic traits at a moderate soil water deficit can characterize cultivar drought tolerance and might be used as markers for trait-based selection.
Keywords: Triticum aestivum L., photosynthesis, transpiration, chlorophyll, productivity, physiological markers of drought tolerance
Full text and supplemented materials
Free full text: PDFReferences
1. Dem'ianyuk, O.S. (2015). Food safety of Ukraine in the context of climate change. Agroecol. J., No. 4, pp. 14-21 [in Ukrainian].
2. Kochubey, S.M., Bondarenko, O.Yu. & Shevchenko, V.V. (2014). Photosynthesis: structural organization and functional features of the light phase of photosynthesis (Vol. 1). Kyiv: Logos [in Russian].
3. Morgun, V.V. & Kiriziy, D.A. (2012). Prospects and modern strategies for improving the physiological characteristics of wheat to improve its productivity. Fiziol. rast. genet., 44, No. 6, pp. 463-483 [in Ukrainian].
4. Morgun, V.V. & Priadkina, G.A. (2014). Efficiency of photosynthesis and the prospects to increase of winter wheat productivity. Fiziol. rast. genet., 46, No. 4, pp. 279-301 [in Russian].
5. Sokolovs'ka-Sergienko, O.G. & Stasik, O.O. (2008). Responses of photosynthetic apparatus on soil drought in winter wheat varieties contrasting in their drought-tolerance. Bull. Ukrainian Soc. Geneticists and Breeders, 6, No. 1. pp. 137-144 [in Ukrainian].
6. Stasik, O.O. (2007). The response of photosynthetic apparatus of C3 plants to water deficits. Fiziologiya i biokhimiya cult. rastenii, 39, No. 1, pp. 14-27 [in Ukrainian].
7. Stasik, O.O. (2014). Photorespiration: Metabolism and the physiological role. In (Eds. Allahverdiyeva, S.I., Rubin, A.B. & Shuvalov, V.A.) Modern photosynthetic problems (505-535), Moskva - Izhevsk: Institute of Computer Research [in Russian].
8. Mokronosov, A.T. & Kovalev, A.G. (Eds.). (1989). Photosynthesis and bioproductivity: methods of determination. Moskva: Agropromizdat [in Russian].
9. Adams, W.W.III., Miller, O., Cohu, C.M. & Demmig-Adams, B. (2013). May photoinhibition be a consequence, rather than a cause, of limited plant productivity? Photosynth. Res., 117, No. 1-3, pp. 31-44.
10. Brisson, N., Gate, P., Gouache, D., Charmet, G., Oury, F.X. & Huard, F. (2010). Why are wheat yields stagnating in Europe? A comprehensive data analysis for France. Field Crops Res., 119, No. 1, pp. 201-212. https://doi.org/10.1016/j.fcr.2010.07.012
11. Distelfeld, A., Avni, R. & Fischer, A.M. (2014). Senescence, nutrient remobilization, and yield in wheat and barley. J. Exp. Bot., 65, No. 14, pp. 3783-3798. https://doi.org/10.1093/jxb/ert477
12. Farooq, M., Hussain, M. & Siddique, K.H.M. (2014). Drought stress in wheat during flowering and grain-filling periods. Crit. Rev. Plant Sci., 33, No. 4, pp. 331-349. https://doi.org/10.1080/07352689.2014.875291
13. Hawkesford, M.J., Araus, J.-L., Park, R., Calderini, D., Miralles, D., Chen, T., Zhang, J. & Parry, M.A.J. (2013). Prospects of doubling global wheat yield. Food Energy Security, 2, No. 1, pp. 34-48. https://doi.org/10.1002/fes3.15
14. Lawlor, D.W. & Tezara, W. (2009). Causes of decreased photosynthetic rate and metabolic capacity in water-deficient leaf cells: a critical evaluation of mechanisms and integration of processes. Ann. Bot., 103, No. 4, pp. 561-579. https://doi.org/10.1093/aob/mcn244
15. Lesk, C., Rowhani, P. & Ramankutty, N. (2016). Influence of extreme weather disasters on global crop production. Nature, 529, No. 7584, pp. 84-87. https://doi.org/10.1038/nature16467
16. Lopes, M.S., Rebetzke, G.L. & Reynolds, M. (2014). Integration of phenotyping and genetic platforms for a better understanding of wheat performance under drought. J. Exp. Bot., 65, No. 21, pp. 6167-6177. https://doi.org/10.1093/jxb/eru384
17. McKersie, B. (2015). Planning for food security in a changing climate. J. Exp. Bot., 66, No. 12, pp. 3435-3450. https://doi.org/10.1093/jxb/eru547
18. Nunes-Nesi, A., Nascimento, V.L., Silva, F.M.O., Szogon, A., Araujo, W.L. & Sulpice, R. (2016). Natural genetic variation for morphological and molecular determinants of plant growth and yield. J. Exp. Bot., 67, No. 10, pp. 2989-3001. https://doi.org/10.1093/jxb/erw124
19. Pinheiro, C. & Chaves, M.M. (2011). Photosynthesis and drought: can we make metabolic connections from available data? J. Exp. Bot., 62, No. 3, pp. 869-882. https://doi.org/10.1093/jxb/erq340
20. Reynolds, M.P., Quilligan, E., Aggarwal, P.K., Bansal, K.C., Cavalieri, A.J., Chapman, S.C., Chapotin, S.M., Datta, S.K., Duveiller, E., Gill, K.S., Jagadish, K.S.V., Joshi, A.K., Koehler, A.-K., Kosina, P., Krishman, S., Lafitte, R., Mahala, R.S., Muthurajan, R. & Yadav, O.P. (2016). An integrated approach to maintaining cereal productivity under climate change. Glob. Food Security, 8, pp. 9-18. https://doi.org/10.1016/j.gfs.2016.02.002
21. Sadras, V.O. & Richards, R.A. (2014). Improvement of crop yield in dry environments: benchmarks, levels of organization and the role of nitrogen. J. Exp. Bot., 65, No. 8, pp. 1981-1995. https://doi.org/10.1093/jxb/eru061
22. Telfer, A. (2014). Singlet oxygen production by PSII under light stress: mechanism, detection, and the protective role of b-carotene. Plant Cell Physiol., 55, No. 7, pp. 1216-1233. https://doi.org/10.1093/pcp/pcu040
23. Vades, V., Kholova, J., Medina, S., Kakkera, A. & Anderberg, H. (2014). Transpiration efficiency: new insights into an old story. J. Exp. Bot., 65, No. 21, pp. 6141-6153. https://doi.org/10.1093/jxb/eru040
24. Voss, I., Sunil, B., Scheibe, R. & Raghavendra, A.S. (2013). Emerging concept for the role of photorespiration as an important part of abiotic stress response. Plant Biol., 15, No. 4, pp. 713-722. https://doi.org/10.1111/j.1438-8677.2012.00710.x
25. Wellburn, A.R. (1994). The spectral determination of chlorophylls a and b, as well as total carotenoids, using various solvents with spectrophotometers of different resolution. J. Plant Physiol., 144, No. 3, pp. 307-313. https://doi.org/10.1016/S0176-1617(11)81192-2