Effect of application of growth regulators on the physiological and yield parameters of winter wheat under water deficit
I. Barányiová, K. Klemhttps://doi.org/10.17221/778/2015-PSECitation:Barányiová I., Klem K. (2016): Effect of application of growth regulators on the physiological and yield parameters of winter wheat under water deficit . Plant Soil Environ., 62: 114-120.
The objective of this study was to evaluate the effect of growth regulator applications on yield and physiological parameters of winter wheat (Triticum aestivum L.) under water deficit. Water deficit was induced artificially by using rain-out shelters in period between booting and late milk ripeness. The effect of growth regulators was evaluated in two contrast years in terms of yield formation (2014–2015). In both years the water deficit caused a significant reduction of grain yield. The negative effect of water deficit was partly alleviated by application of growth regulators. However, the effect of individual growth regulators varied depending on year. In favourable conditions for grain filling (2014) the alleviating effect was more pronounced in application of azoxystrobin which slows down the leaf senescence. On the contrary, in the year with suitable conditions for tillering (2015), the alleviating effect was most apparent in application of chlormequate-chloride. The applications of trinexapac-ethyl and ethephon showed small reduction of negative effect of water deficit consistently in both years. The CO2 assimilation rate and stomatal conductance were recovered particularly by applications of chlormequate-chloride and azoxystrobin. Chlorophyll content and chlorophyll fluorescence parameters were more affected by water deficit in 2014, and the alleviating effect of growth regulators corresponded with yield response.Keywords:
PSII photochemistry; number of spikes; photosynthesis; spike productivity; water limitation
Akram H.M., Saeed-ur-Rehman H., Sattar A., Ali A. (2012): Accumulation of osmotica in hexaploid wheat under drought stress and application of growth substances. Proceedings of the National Seminar Role of Agronomy in National Food Security, 7–14.Beasley J.S., Branham B.E., Ortiz-Ribbing L.M. (2005): Trinexapac-ethyl affects Kentucky bluegrass root architecture. HortScience, 40: 1539–1542.Beasley Jeffrey S., Branham Bruce E., Spomer L. Arthur (2007): Plant Growth Regulators Alter Kentucky Bluegrass Canopy Leaf Area and Carbon Exchange. Crop Science, 47, 757- https://doi.org/10.2135/cropsci2005.11.0432Beck C., Oerke E.C., Dehne H.W. (2001): Impact of strobilurins on physiology and yield formation of wheat. Mededelingen (Rijksuniversiteit te Gent. Fakulteit van de Landbouwkundige en Toegepaste Biologische Wetenschappen), 67: 181–187.Bian X., Merewitz E., Huang B. (2009): Effects of trinexapac-ethyl on drought responses in creeping bentgrass associated with water use and osmotic adjustment. Journal of the American Society for Horticultural Science, 134: 505–510.Bingham I.J., McCabe V.B. (2006): Commercially available plant growth regulators and promoters modify bulk tissue abscisic acid concentrations in spring barley, but not root growth and yield response to drought. Annals of Applied Biology, 149, 291-304 https://doi.org/10.1111/j.1744-7348.2006.00093.xBurke Eleanor J., Brown Simon J., Christidis Nikolaos (2006): Modeling the Recent Evolution of Global Drought and Projections for the Twenty-First Century with the Hadley Centre Climate Model. Journal of Hydrometeorology, 7, 1113-1125 https://doi.org/10.1175/JHM544.1Cromey M.G., Butler R.C., Mace M.A., Cole A.L.J. (2004): Effects of the fungicides azoxystrobin and tebuconazole on Didymella exitialis, leaf senescence and grain yield in wheat. Crop Protection, 23, 1019-1030 https://doi.org/10.1016/j.cropro.2004.03.002Emam Y., Cartwright P.M. (1990): Effects of drying soil and CCC on root:shoot growth and water use in barley plants. Monograph – British Society for Plant Growth Regulation, 21: 389–392.Entz M. H., Fowler D. B. (1988): Critical Stress Periods Affecting Productivity of No-Till Winter Wheat in Western Canada. Agronomy Journal, 80, 987- https://doi.org/10.2134/agronj1988.00021962008000060030xGrossmann Klaus, Kwiatkowski Jacek, Caspar Günter (1999): Regulation of Phytohormone Levels, Leaf Senescence and Transpiration by the Strobilurin Kresoxim-methyl in Wheat (Triticum aestivum). Journal of Plant Physiology, 154, 805-808 https://doi.org/10.1016/S0176-1617(99)80262-4Hlavinka Petr, Trnka Miroslav, Semerádová Daniela, Dubrovský Martin, Žalud Zdeněk, Možný Martin (2009): Effect of drought on yield variability of key crops in Czech Republic. Agricultural and Forest Meteorology, 149, 431-442 https://doi.org/10.1016/j.agrformet.2008.09.004Jaleel C. Abdul, Manivannan P., Lakshmanan G.M.A., Gomathinayagam M., Panneerselvam R. (2008): Alterations in morphological parameters and photosynthetic pigment responses of Catharanthus roseus under soil water deficits. Colloids and Surfaces B: Biointerfaces, 61, 298-303 https://doi.org/10.1016/j.colsurfb.2007.09.008Kasele I. N., Nyirenda F., Shanahan J. F., Nielsen D. C., d'Andria R. (1994): Ethephon Alters Corn Growth, Water Use, and Grain Yield Under Drought Stress. Agronomy Journal, 86, 283- https://doi.org/10.2134/agronj1994.00021962008600020014xKřen J., Klem K., Svobodová I., Míša P., Neudert L. (2014): Yield and grain quality of spring barley as affected by biomass formation at early growth stages. Plant, Soil and Environment, 60: 221–227.Lobell D. B., Schlenker W., Costa-Roberts J. (): Climate Trends and Global Crop Production Since 1980. Science, 333, 616-620 https://doi.org/10.1126/science.1204531Marcum K. B., Jiang Hongfei (1997): Effects of Plant Growth Regulators on Tall Fescue Rooting and Water Use. Journal of Turfgrass Management, 2, 13-27 https://doi.org/10.1300/J099v02n02_02Rajala A., Peltonen-Sainio P. (2001): Plant Growth Regulator Effects on Spring Cereal Root and Shoot Growth. Agronomy Journal, 93, 936- https://doi.org/10.2134/agronj2001.934936xTrnka Miroslav, Rötter Reimund P., Ruiz-Ramos Margarita, Kersebaum Kurt Christian, Olesen Jørgen E., Žalud Zdeněk, Semenov Mikhail A. (): Adverse weather conditions for European wheat production will become more frequent with climate change. Nature Climate Change, 4, 637-643 https://doi.org/10.1038/nclimate2242Wu Yue-Xuan, von Tiedemann Andreas (2001): Physiological Effects of Azoxystrobin and Epoxiconazole on Senescence and the Oxidative Status of Wheat. Pesticide Biochemistry and Physiology, 71, 1-10 https://doi.org/10.1006/pest.2001.2561