Dependence of main shoot ear grain yield from stem deposited ability of winter wheat varieties


V.V. Morgun, G.A. Priadkina, O.V. Zborovska

In field conditions, the parameters of deposited ability of the main shoots stem and the remobilization of assimilates of 3 winter wheat varieties of modern breeding (2013-2016) and 3 drought-tolerant ones of earlier breeding (1997-2008) under natural conditions were studied (Kyiv reg., Ukraine). The amount of precipitation for June 2017, during the period of reproductive development of winter wheat, was 34% from normal amount. The comparative estimation showed that the modern variety of Raygorodka and the drought tolerant variety of the earlier breeding Podolianka were the highest grain yield of main shoots ear (respectively, 1.88 ± 0.07 and 1.73 ± 0.05 g) under such conditions. Their yields were higher than other 4 varieties by 5-10%, too. Significant variations in stem dry matter weight, the content and amount of nonstructural carbohydrates in the main shoots, at anthesis, as well as full ripeness there were established between varieties. The strong correlation between the grain yield of main shoot ear with the stem dry matter weight at anthesis (r=0.82 ± 0.29) and difference of stem dry matter weight at anthesis and full ripeness (r=0.84 ± 0.27) was revealed. Both most productive varieties had the highest stem dry matter weight at anthesis, the bigger difference of its weight between at anthesis and the full ripeness and the greater relative contribution of nonstructural carbohydrates accumulated in the stem during period from anthesis to full ripeness in the grain weight it was found. The resistance of winter wheat varieties to drought is due to their ability to depose assimilates in the stem during the preanthesis period (before the grain filling) and due to the re-mobilization of the assimilates accumulated during the reproductive period it has been shown.

Keywords: Triticum aestivum L.; drought; grain yield; deposited ability

Araus, J. L., Slafer, G. A., Reynolds, M. P., Royo C. (2002). Plant breeding and drought in C3 cereals: what should we breed for? Annals of Botany, 89, 7, 925-940.
Atkinson, J.A., Wingen, L.U., Griffiths, M., Pound, M.P., Gaju, O., Foulkes, M.J., Le Gouis, J., Griffiths, S., Bennet, M.J., King, J., Wells, D.M. (2015). Phenotyping pipeline reveals major seedling root growth QTL in hexaploid wheat. J. Exp. Bot., 66, 2283–2292.
Dospehov, B.A. (1973). Metodika polevogo opyita [Methodology of field experience]. 335. (in Russian)
Ehdaie, B., Alloush, G.A., Madore, M.A., Waines, J.G. (2006). Genotypic variation for stem reserves and mobilization in wheat: I. Postanthesis changes in internode dry matter. Crop. Sci., 46, 735-746.
Ehdaie, B., Alloush, G.A., Waines, J.G. (2008). Genotypic variation in linear rate of grain growth and contribution of stem reserves to grain yield in wheat. Field Crops Res., 106, 34-43.
Esmaeilpour-Jahromi, M., Ahmadi, A., Lunn, J.E., Abbasi, A., Poustini, K., Joudi, M. (2012). Variation in grain weight among Iranian wheat cultivars: The importance of stem carbohydrate reserves in determining final grain weight under source limited conditions. Australian Journal of Crop Science, 6, 1508-1515.
Fu J., Huang B. (2001). Involvement of antioxidants and lipid peroxidation in the adaptation of two cool-season grasses to localized drought stress. Environ. Exp. Bot., 45, 105–114.
Hawkesford, M.J., Araus, J.-L., Park, R., Calderini, D., Miralles, D., Shen, T., Zhang, J., Parry, M.A.J. (2013). Prospect of doubling global wheat yields. Food and Energy security, 2(1), 34-48.
Kiriziy, D.A., Shadchyna, T.M., Stasyk, O.O., Priadkina G.O., Sokolovska-Serhiienko, O.H., Huliaiev, B.I., Sytnik, S.K. (2011). Osoblyvosti fotosyntezu i produktsiinoho protsesu u vysokointensyvnykh henotypiv ozymoi pshenytsi [Features of photosynthesis and production process in high-intensity genotypes of winter wheat]. Kyiv, 415 (In Ukrainian).
Mahajan, S., Tuteja, N. (2005). Cold, salinity and drought stresses: An overview. Arch. Biochem. Biophys, 444, 139-158.
Merchuk-Ovnat, L., Barak, V., Fahima, T., Ordon, F., Lidzbarsky, G.A., Krugman, T., Saranga, Y. (2016). Ancestral QTL alleles from wild emmer wheat improve drought resistance and productivity in modern wheat cultivars. Front. Plant Sci., 7. DOI:10.3389/fpls.2016.00452.
Metody biokhimicheskogo analiza rasteniy. (1972). [Methods of plants biochemical analysis]. 456. (in Russian)
Morhun, B.V. (2016) Stan ta perspektyvy vykorystannia pshenychno-zhytnikh translokatsii u selektsii ozymoi miakoi pshenytsi [Status and prospects of using wheat-rye translocations in winter wheat breeding]. Fiziologiya rasteniy i henetyka, 48(4), 324-343. (in Ukrainian)
Morhun, V.V., Sanin, Ye.V., Shvartau, V.V., Omelianenko, O.A. (2011). Sorty ta tekhnolohii vyroshchuvannia vysokykh urozhaiv ozymoi pshenytsi. Klub 100 tsentneriv [Varieties and technologies of high winter wheat crops growing. Club of 10 tones]. Kyiv,121. (in Ukrainian)
Nyachiro, J.M., Briggs, K.G., Hoddinott, J., Flanagan, A. (2001). Chlorophyll content, chlorophyll fluorescence and water deficit in spring wheat. Cereal Res. Comm., 29, 1, 135-142.
Ruuska, A.C., Rebetzke, G.J., van Herwaarden, A.F., Richadrs, R.A., Fettell, N.A., Tabe, L., Jenkins, C.L.D. (2006). Genotypic variation in water-soluble carbohydrate accumulation in wheat. Functional Plant Biology, 33, 799–809.
Slewinski, T. L. (2012). Non-structural carbohydrate partitioning in grass stems: a target to increase yield stability, stress tolerance, and biofuel production. J. Exp. Bot., 63, 4647-4670.
Wahid A., Gelani S., Ashraf M., Foolad M. R. (2007). Heat tolerance in plants: an overview. Environ. Exp. Bot., 61, 199–223.
Wasson, A.P., Richards, R.A., Chatrath, R., Misra, S.C., Prasad, S.V., Rebetzke, G.J., Kirkegaard, J.A., Christopher, J., Watt, M. (2012). Traits and selection strategies to improve root systems and water uptake in water-limited wheat crops. J. Exp. Bot., 63, 3485–3498.
Wheat crop and development. (2008). Eds.: White, J., Edvards, J. 104.


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