江西农业学报2017，Vol.29Issue(3)：7-13,7.DOI:10.19386/j.cnki.jxnyxb.2017.03.02
灌浆结实期遮光对糯玉米籽粒产量与淀粉品质的影响
Effects of Shading at Filling and Seed-setting Stage on Yield and Starch Quality of Waxy Maize
摘要
Abstract
Awnings were used to set up two different shading treatments (30% shading, and 50% shading), and the effects of shading treatment at seed-setting stage on the yield and starch quality of waxy maize varieties Suyunuo 5 and Yunuo 7 were studied.The results showed that the seed yield of waxy maize was reduced by shading treatment, and the yield reduction rate was different between 2 maize genotypes.Shading treatment caused the decrease in peak viscosity, trough viscosity and final viscosity of waxy maize starch.The treatment of 30% shading significantly reduced the pasting temperature of Suyunuo 5, while it significantly increased the pasting temperature of Yunuo 7.Shading treatment led to the decline in both average diameter of starch granules and proportion of large starch granules (diameter > 17 μm).Shading treatment had no significant influence on the peak index, gelatinization enthalpy and conclusion temperature of waxy maize starch, but it increased the retrogradation percentage and retrogradation enthalpy of waxy maize starch.Shading treatment enhanced the iodine binding force of waxy maize starch, but this effect was weakened with the reduction in light intensity.关键词
糯玉米/遮光/籽粒产量/淀粉品质Key words
Waxy maize/Shading/Seed yield/Starch quality分类
农业科技引用本文复制引用
徐仁超,赵浚宇,陆大雷,陆卫平,杨美英,徐建平,刘水东..灌浆结实期遮光对糯玉米籽粒产量与淀粉品质的影响[J].江西农业学报,2017,29(3):7-13,7.基金项目
国家自然科学基金项目(30971731、31000684、31271640) （30971731、31000684、31271640）
江苏省高校优势学科建设工程项目 （）
江苏省挂县强农富民工程项目. （）
