Effects of irrigation schemes on the components and physicochemical properties of starch in waxy wheat lines
The waxy wheat shows special starch quality due to low amylose content. However, less information is available concerning the physicochemical properties of starch in different waxy wheat under different irrigation. In this study, two wheat near-isogenic lines (NILs) and a normal wheat cultivar were used to investigate the contents, size distribution and crystallinity of starch by biochemical methods, laser-diffraction and X-ray diffraction analysis. The amylose content in wheat grains was the lowest in waxy wheat lines, SJZ8-N, followed by the partly waxy wheat lines, SJZ8-P, and the highest in the normal wheat, SJZ8, with significant differences among wheat lines. Waxy wheat starch had more B-type granules and a higher degree of crystallinity than normal wheat starch, with the order as SJZ8-N > SJZ8-P > SJZ8. When compared with the conventional and water-saving irrigation, the rainfed treatment showed the lowest starch content, amylose content (except SJZ8-N), amylopectin content and relative crystallinity in the three wheat lines indicating that water deficiency was not benefited starch accumulation and crystal formation in wheat grains. It was concluded that (1) wheat lines not only differed in amylose content but also in size distribution and crystallinity of starch; (2) irrigation markedly influenced the physicochemical characteristics of wheat starch; therefore, the irrigation schemes could be adjusted to achieve high-quality wheat production.
Ai Y., Jane J. (2016): Starch: structure, property, and determination. In: Caballero B., Finglas P., Toldrá F. (eds.): Encyclopedia of Food and Health. 1st Edition. Cambridge, Academic Press, 165–174. ISBN: 9780123849533
Dai Z.M., Xu T.S., Li X.G., Zhang H., Li Y., Zhang X.L. (2016): Effect of different water supply on accumulation of high molecular weight glutenin subunits and glutenin macropolymers in near-isogenic wheat lines. Plant, Soil and Environment, 62: 53–59. https://doi.org/10.17221/728/2015-PSE
Hayakawa K., Tanaka K., Nakamura T., Endo S., Hoshino T. (1997): Quality characteristics of waxy hexaploid wheat (Triticum aestivum L.): properties of starch gelatinization and retrogradation. Cereal Chemistry, 74: 576–580. https://doi.org/10.1094/CCHEM.19184.108.40.2066
Chen P., Zhang X., Zhao B., Xiao N., Li Y.Z. (2015): Morphological features and internal structure of waxy wheat starch. Science and Technology of Food Industry, 36: 70–76.
Jaksics E., Paszerbovics B., Egri B., Rakszegi M., Tremmel-Bede K., Vida G., Gergely S., Németh R., Tömösközi S. (2020): Complex rheological characterization of normal, waxy and high-amylose wheat lines. Journal of Cereal Science, 93: 1–11. https://doi.org/10.1016/j.jcs.2020.102982
Jung T.H., Kim J.Y., Baik B.K., Park C.S. (2015): Physicochemical and thermal characteristics of starch isolated from a waxy wheat genotype exhibiting partial expression of Wx proteins. Cereal Chemistry, 92: 14–21. https://doi.org/10.1094/CCHEM-06-14-0131-R
Kim H.-S., Huber K.C. (2010): Physicochemical properties and amylopectin fine structures of A- and B-type granules of waxy and normal soft wheat starch. Journal of Cereal Science, 51: 256–264. https://doi.org/10.1016/j.jcs.2009.11.015
Kozlov S.S., Krivandin A.V., Shatalova O.V., Noda T., Bertoft E., Fornal J., Yuryev V.P. (2007): Structure of starches extracted from near-isogenic wheat lines. Journal of Thermal Analysis and Calorimetry, 87: 575–584. https://doi.org/10.1007/s10973-006-7880-z
Li C.Y., Zhou D.D., Fan T., Wang M.Y., Zhu M., Ding J.F., Zhu X.K., Guo W.S., Shi Y.C. (2020): Structure and physicochemical properties of two waxy wheat starches. Food Chemistry, 318: 126492. https://doi.org/10.1016/j.foodchem.2020.126492
Liu X.W., Zhang M., Zhang Y.C., Yang M., Song X.J., Cai R.G. (2017): Effects of shading at grain filling stages on starch components and physicochemical properties of the waxy wheat and non-waxy wheat. Scientia Agricultura Sinica, 50: 1582–1593.
Peng M., Gao M., Abdel-Aal E.-S.M., Hucl P., Chibbar R.N. (1999): Separation and characterization of A- and B-type starch granules in wheat endosperm. Cereal Chemistry, 76: 375–379. https://doi.org/10.1094/CCHEM.19220.127.116.115
Purna S.K.G., Shi Y.C., Guan L., Wilson J.D., Graybosch R.A. (2015): Factors governing pasting properties of waxy wheat flours. Cereal Chemistry, 92: 529–535. https://doi.org/10.1094/CCHEM-10-14-0209-R
Shevkani K., Singh N., Bajaj R., Kaur A. (2016): Wheat starch production, structure, functionality and applications – a review. International Journal of Food Science and Technology, 52: 38–58. https://doi.org/10.1111/ijfs.13266
Singh S., Singh G., Singh P., Singh N. (2008): Effect of water stress at different stages of grain development on the characteristics of starch and protein of different wheat varieties. Food Chemistry, 108: 130–139. https://doi.org/10.1016/j.foodchem.2007.10.054
Song X.J., Zhang M., Wu X.P., Zhao C., Shi J., Zhang Y.C., Liu X.W., Cai R.G. (2017): Effects of drought stress on wheat endosperm starch structure and physicochemical properties of different varieties. Scientia Agricultura Sinica, 50: 260–271.
Tong J.Y., Wang S.J., He Z.H., Zhang Y. (2021): Effects of reduced nitrogen fertilization and irrigation on structure and physicochemical properties of starch in two bread wheat cultivars. Agriculture, 11: 26. https://doi.org/10.3390/agriculture11010026
Wang S.J., Wang J.R., Zhang W., Li C.L., Yu J.L., Wang S. (2015): Molecular order and functional properties of starches from three waxy wheat varieties grown in China. Food Chemistry, 181: 43–50. https://doi.org/10.1016/j.foodchem.2015.02.065
Xia J., Zhu D., Chang H.M., Yan X., Yan Y.M. (2020): Effects of water-deficit and high-nitrogen treatments on wheat resistant starch crystalline structure and physicochemical properties. Carbohydrate Polymers, 234: 115905. https://doi.org/10.1016/j.carbpol.2020.115905
Zadoks J.C., Chang T.T., Konzak C.F. (1974): A decimal code for the growth stages of cereals. Weed Research, 14: 415–421. https://doi.org/10.1111/j.1365-3180.1974.tb01084.x
Zhang H.X., Zhang W., Xu C.Z., Zhou X. (2013): Morphological features and physicochemical properties of waxy wheat starch. International Journal of Biological Macromolecules, 62: 304–309. https://doi.org/10.1016/j.ijbiomac.2013.09.030
Zhong Y.X., Li Y., Zhong J.W., Shi Z.Q., Cai J., Wang X., Zhou Q., Cao W.X., Dai T.B., Jiang D. (2016): Starch granule size distribution in wheat endosperm indirectly correlates to pasting property indicated by near-isogenic lines with different null-waxy alleles. Starch – Staerke, 69: 1–11.
Zhou Q., Huang M., Huang X., Liu J., Wang X., Cai J., Dai T.B., Cao W.X., Jiang D. (2018): Effect of post-anthesis waterlogging on biosynthesis and granule size distribution of starch in wheat grains. Plant Physiology and Biochemistry, 132: 222–228. https://doi.org/10.1016/j.plaphy.2018.08.035
Zi Y., Ding J.F., Song J.M., Humphreys G., Peng Y.X., Li C.Y., Zhu X., Guo W.S. (2018): Grain yield, starch content and activities of key enzymes of waxy and non-waxy wheat (Triticum aestivum L.). Scientific Reports, 8: 4548. https://doi.org/10.1038/s41598-018-22587-0