中文摘要：

以‘西农538’和‘周麦22’为材料,在灌浆期分别喷施亚精胺（Spd）、腐胺（Put）和乙烯（Eth）,研究外源多胺和乙烯对小麦籽粒品质的影响。结果表明：灌浆期喷施Spd,2个品种籽粒的清蛋白、醇溶蛋白、谷蛋白和总蛋白相比对照均有所提高,面筋质量分数、沉降值等加工品质指标均有不同程度的上升趋势,直链淀粉质量分数下降但未达显著水平,小麦品质得到改善。而喷施Put的效果相反但未达到显著影响。Eth提高清蛋白和球蛋白质量分数,但显著降低醇溶蛋白和谷蛋白质量分数以及面筋质量分数、沉降值等加工品质指标。说明通过化学调控等途径增加籽粒Spd浓度或降低Put和Eth浓度,可以在一定程度上改善小麦的籽粒品质。

英文摘要：

In order to investigate effect of spermidine（Spd）,putrescine（Put）and ethylene（Eth）on quality of wheat grain,two wheat cultivars of‘Xinong 538＇ and‘Zhoumai 22＇ were used as materials.The results showed that spraying Spd at the early stage of grain filling,the contents of albumin,gliadin,glutenin and total protein of two cultivars were increased compared with the control,gluten content,sedimentation value and other processing quality indicators had different degrees of upward trend,amylose content was decreased but did not reach significant level,the quality of wheat was improved.While the effect of Put was opposite but not significant.Eth increased the content of albumin and globulin,but significantly decreased the content of gliadin and gluten as well as the processing quality index such as gluten content and sedimentation value.The results indicated that the quality of wheat grain would be improved to a certain degree by increasing Spd or reducing Put and Eth concentrations in the filling grains through application of chemical regulators.