开放式O_3浓度增高对小麦籽粒蛋白的影响

Effects of elevated ozone concentration on wheat grain protein components with FACE system

于2006—2009年应用FACE研究平台,设计O3浓度增高50%(E)和自然浓度(CK)两个处理,采用烟农19、扬麦16、扬麦15和扬辐麦2号4个品种,研究了O3浓度增高对不同类型小麦品种籽粒蛋白质组分及其动态的影响.结果表明:随着O3浓度增高,籽粒蛋白质含量上升,3个年度上升幅度分别为7.55%～16.37%(2006—2007年度)、4.93%～22.63%(2007—2008年度)和2.29%～17.65%(2008—2009年度),处理间、品种和年度间差异显著;但籽粒蛋白质产量显著或极显著下降,3个年度降幅分别为1.83%～11.64%(2006—2007年度),-0.41%～24.22%(2007—2008年度)和-1.90%～15.81%(2008—2009年度).籽粒蛋白质4种组分(清蛋白、球蛋白、醇溶蛋白和谷蛋白)含量均表现为O3浓度增高处理高于自然浓度处理,品种间和年度间差异显著,且处理间醇溶蛋白和球蛋白含量差异显著,而清蛋白和谷蛋白含量差异不显著.

In 2006-2009,a Free-Air Controlled Enrichment（FACE） system was applied to studythe effects of elevated ozone concentration（[O3 ]） on the grain protein components and theirdynamics of four winter wheat varieties Yannong 19,Yangmai 16,Yangmai 15,and Yangfumai 2.2.29%-17.65%（2008-2009） in the three years,respectively,and the differences betweenTwo levels of [O3]were installed,i.e.,ambient level（CK-O3） and 50% higher than the ambientlevel（E-O3）.With the increase of [O3],the grain protein content of the varieties increased,withthe increment being 7.55%-16.37%（2006-2007）,4.93%-22.63%（2007-2008）,and treatments,varieties,and years being all significant.Adversely,the grain protein yield was de-creased significantly by 1.83%-11.64%（2006-2007）,-0.41%-24.22%（2007-2008）,and-1.90%-15.81%（2008-2009）,respectively in the three years.The contents of fourgrain protein components（albumin,globulin,gliadin,and glutenin） were significantly higher under E-O3 than under CK-O3,and the differences between treatments,varieties,and years were sig-ificant,except the albumin and glutenin contents between treatments.