Department of Biostatistics, University of Michigan, Ann Arbor, Michigan 48104, United States.
J Agric Food Chem. 2011 Nov 9;59(21):11652-6. doi: 10.1021/jf202781v. Epub 2011 Oct 10.
The compositions of a diverse range of commercially available conventional and genetically modified (GM; glyphosate-tolerant) soybean varieties from maturity groups 8 and 5, respectively, grown in the northern and southern soybean regions of Brazil during the 2007-2008 and 2008-2009 growing seasons were compared. Compositional analyses included measurement of essential macro- and micronutrients, antinutrients, and selected secondary metabolites in harvested seed as well as measurement of proximates in both forage and harvested seed. Statistical comparisons utilized a mixed analysis of variance model to evaluate the relative contributions of growing season, soybean growing region, production site, phenotype (GM or conventional), and variety. The study highlighted extensive variability in the overall data set particularly for components such as fatty acids, vitamin E, and isoflavones. There were few differences between the GM and non-GM populations, and most of the variability in the data set could be attributed to regional and variety differences. Overall, the results were consistent with the expanding literature on the lack of any meaningful impact of transgene insertion on crop composition.
分别对分别来自巴西北部和南部大豆种植区、生育期为 8 和 5 的不同商业化常规和转基因（耐草甘膦）大豆品种的组成进行了比较，这些品种在 2007-2008 年和 2008-2009 年生长季节种植。组成分析包括对收获种子中的必需宏量和微量营养素、抗营养因子和选定的次生代谢物进行测量，以及对饲料和收获种子中的粗蛋白进行测量。统计比较利用混合方差分析模型来评估生长季节、大豆种植区域、生产地点、表型（转基因或常规）和品种的相对贡献。该研究突出了整个数据集的广泛变异性，特别是对于脂肪酸、维生素 E 和异黄酮等成分。转基因和非转基因群体之间几乎没有差异，数据集中的大部分变异性可以归因于区域和品种差异。总体而言，结果与关于转基因插入对作物成分没有任何有意义影响的不断扩大的文献一致。
