Abstract:

Two winter wheat cultivars, GC8901with strong-gluten and SN1391 with weak-gluten, were employed in the field experiment to investigate the effects of irrigation regimes on grain quality, including protein content, protein component contents, farinograph parameters and extensograph parameters. The results showed that the grain albumin and globulin contents of both cultivars were enhanced by irrigation. An appropriate amount of irrigation made the contents of gliadin and glutenin enhance in strong-gluten cultivar GC8901, but decline in weak-gluten wheat SN1391. GC8901 was superior to SN1391 in terms of GMP and HMW-GS contents, flour sedimentation value, farinograph parameters and extensograph parameters. Irrigation improved the flour sedimentation value, farinograph parameters and extensograph parameters in strong-gluten cultivar GC8901, but not in weak-gluten cultivar SN1391, which was closely associated with the influence of irrigation on gliadin, glutenin, GMP and HMW-GS contents in the two cultivars.

Key words: Wheat, Irrigation regime, Protein components, Quality