Characteristics of the Grain-filling Process and Starch Accumulation of High-yield Common Buckwheat ‘cv. Fengtian 1’ and Tartary Buckwheat ‘cv. Jingqiao 2’
High-yield common buckwheat ‘cv. Fengtian 1’ (FT1) and tartary buckwheat ‘cv. Jingqiao 2’ (JQ2) were selected to investigate the characteristics of the grain-filling process and starch accumulation of high-yield buckwheat. FT1 had an average yield that was 43.0% higher than that of the control ‘cv. Tongliaobendixiaoli’ (TLBDXL) in two growing seasons, while JQ2 had an average yield that was 27.3% higher than that of the control ‘cv. Chuanqiao 2’ (CQ2). The Richards equation was utilized to evaluate the grain-filling process of buckwheat. Both FT1 and JQ2 showed higher values of initial growth power and final grain weight and longer linear increase phase, compared with respective control. These values suggest that the higher initial increasing rate and the longer active growth period during grain filling play important roles to increase buckwheat yield. Similar patterns of starch, amylose and amylopectin accumulation were detected in common buckwheat, leading to similar concentration of each constituent at maturity in FT1 and TLBDXL. Tartary buckwheat showed an increasing accumulation pattern of amylose in developing seeds, which differed from that of starch and amylopectin. This pattern led to a significant difference of the concentrations of amylose and amylopectin at maturity between JQ2 and CQ2, the mechanisms of which remained unclear. Nevertheless, both FT1 and JQ2 showed increased starch, amylose, and amylopectin accumulation during the physiological maturity of grains. The results suggest that prolonging the active grain-filling period to increase carbohydrate partitioning from source to seed sink can be an effective strategy to improve buckwheat yield.
Keywordsbuckwheat yield Richards equation starch amylose
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We are grateful to the State Key Basic Research and Development Plan of China (2014CB160312), the National Natural Science Foundation of China (31360318, 31401315), the Earmarked Fund for Outstanding Youth Science Talents of Guizhou (QianKeHe Ren Zi 03) and the Science Technology Project of Guizhou (QianKe-He LH Zi 7770).
- Chen, Q.F. 2012. Plant sciences on genus Fagopyrum. Science Press. Beijing, China. pp. 50–51.Google Scholar
- FAOSTAT 2012. Online database. Available online: http://faostat.fao.orgGoogle Scholar
- Jacquemart, A.L., Ledent, J.F.O., Quinet, M., Cawoy, V., Kinet, J.M. 2012. Is buckwheat (Fagopyrum esculentum Moench) still a valuable crop today? Eur. J. Plant Sci. Biotech. 6(Special issue 2):1–10.Google Scholar
- He, Z.F., Zhang, D.Q. 1997. The chemistry and detection technology of health food. Chinese Light Industry Press. Beijing, China. pp. 163–164. (in Chinese)Google Scholar
- Li, W., Zeng, H. 1985. Research of spring wheat grain weight. Sci. Agric. Sin. 18:14–19. (in Chinese with English abstract)Google Scholar
- Li, Y., Shi, T.X., Huang, K.F., Tang, X.X., He, J., Jian, Y., Chen, Q.F. 2013. Correlation analysis of tartary buckwheat seed yield with ecological factors and agronomic traits. Southwest China J. Agric. Sci. 26: 35–41. (in Chinese with English abstract)Google Scholar
- Li, Z., Li, S., Wu, W., Shao, M., Zhang, X. 2006. Grain-filling characters of different genotype winter wheat under nitrogen fertilization in semi-humid area of south Loess Plateau. Chin. J. Appl. Ecol. 17:75–79 (in Chinese with English abstract)Google Scholar
- Ma, M., Liu, L., Zhang, L., Cui, L. 2015. Research progress of buckwheat breeding. J. Shanxi Agric. Sci. 43:240–243. (in Chinese with English abstract)Google Scholar
- Mazza, G. 1988. Lipid content and fatty acid composition of buckwheat seed. Cereal Chem. 65:122–126.Google Scholar
- Milde, J., Elsner, E.F., Grassmann, J. 2004. Synergistic inhibition of low-density lipoprotein oxidation by rutin, γ-terpinene, and ascorbic acid. Phytomedicine 2–3:105–113.Google Scholar
- Murai, M., Ohnishi, O. 1996. Population genetics of cultivated common buckwheat, Fagopyrum esculentun Moench. X. diffusion routes revealed by RAPD markers. Gene. Gen. Sy. 71:211–218.Google Scholar
- Obendorf, R.L., Horbowicz, M., Taylor, D.P. 1993. Structure and chemical composition of developing buckwheat seed. In: Janick, J., Simon, J.E. (eds), New Crops. Wiley. New York, USA. pp. 244–251.Google Scholar
- Ötles, T., Cagindi, C. 2006. Cereal based functional foods and nutraceuticals. Acta Sci. Pol. Technol. Aliment. 5:107–112.Google Scholar
- Peng, H., Xiao, L. 2012. Analysis of the grain filling traits in two wheat cultivars. Chin. Agric. Sci. Bull. 28:51–54. (in Chinese with English abstract)Google Scholar
- Shi, J., Cui, H., Zhao B., Dong, S., Liu, P., Zhang, J. 2013. Effect of light on yield and characteristics of grain-filling of summer maize from flowering to maturity. Sci. Agric. Sin. 46:4427–4434. (in Chinese with English abstract)Google Scholar
- Wang, L.A. 1999. Detecting amylose in rice by using double beam and dual-wavelength spectrophotometer. Cereal Feed Ind. 3:45–46. (in Chinese)Google Scholar
- Zhu, Q., Cao, X., Luo, Y. 1988. Growth analysis on the process of grain filling in rice. Acta Agron. Sin. 3:182–193 (in Chinese with English abstract)Google Scholar
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