Effects_of_heat_stress_after_pollination_on_grain_yield_and_starch_quality_of_waxy_maize陆大雷.ppt

Effects of heat stress after pollination on grain yield and starch quality of waxy maize 扬州大学农学院 陆大雷 陆卫平 2013-10 Related progress: Focused on yield and physiology and biochemistry index. Few studies focused on maize starch quality (Lu et al, Carbohydrate Research, 282, 157–170, 1996) Main contents Physicochemical properties of waxy maize flour during grain development Starch physicochemical properties of waxy maize Flour physicochemical properties of waxy maize Grain physicochemical properties of fresh waxy maize Conclusion Heat stress decrease grain yield. The effect of heat stress at early grain development stage on grain yield and starch quality was severe. Heat stress decrease grain starch content and increase protein content. Heat stress decrease the starch crystallinity, increase the granule size and iodine binding capacity, result in the decrease of peak viscosity and increase the retrogradation percentage. Shortly heat stress accelerate the grain filling rate, result in the increase of peak viscosity and retrogradation percentage of fresh waxy maize. The grain filling rate was accelerated by heat stress but it ceased early. Publications 1. Lu D, Shen X, Cai X, Yan F, Lu W, Shi Y-C. Effects of heat stress during grain filling on the structure and thermal properties of waxy maize starch. Food Chemistry, 2014, 143, 313-318 2. Lu D, Sun X, Yan F, Wang X, Xu R, Lu W. Effects of high temperature during grain filling under control conditions on the physicochemical properties of waxy maize flour. Carbohydrate Polymers, 2013, 98, 302-310 3. Lu D, Lu W. Effects of heat stress during grain filling on the functional properties of flour from fresh waxy maize. Cereal Chemistry. 2013, 90: 65-69 4. Lu D, Cai X, Yan F, Sun X, Wang X, Lu W. Effects of high growing-temperature after pollination on physicochemical properties of waxy maize flour during grain development. Journal of the Science of Food and Agriculture, online. 5. Lu D, Sun X, Yan F, Wang X, Xu R, Lu W. Effect