†DuPont Pioneer, 200 Powder Mill Road, P.O. Box 8352, Wilmington, Delaware 19803, United States.
‡Eurofins AgroSciences, Fort Walton Beach, Florida 32547, United States.
J Agric Food Chem. 2015 Jun 10;63(22):5321-34. doi: 10.1021/acs.jafc.5b01764. Epub 2015 Jun 1.
This study was designed to assess natural variation in composition and metabolites in 50 genetically diverse non genetically modified maize hybrids grown at six locations in North America. Results showed that levels of compositional components in maize forage were affected by environment more than genotype. Crude protein, all amino acids except lysine, manganese, and β-carotene in maize grain were affected by environment more than genotype; however, most proximates and fibers, all fatty acids, lysine, most minerals, vitamins, and secondary metabolites in maize grain were affected by genotype more than environment. A strong interaction between genotype and environment was seen for some analytes. The results could be used as reference values for future nutrient composition studies of genetically modified crops and to expand conventional compositional data sets. These results may be further used as a genetic basis for improvement of the nutritional value of maize grain by molecular breeding and biotechnology approaches.
本研究旨在评估北美 6 个地点种植的 50 个遗传多样性的非转基因玉米杂交种的组成和代谢物的自然变异。结果表明，玉米饲料的组成成分水平受环境影响大于基因型。粗蛋白、除赖氨酸以外的所有氨基酸、锰和β-胡萝卜素在玉米籽粒中受环境影响大于基因型；然而，大多数近物、纤维、所有脂肪酸、赖氨酸、大多数矿物质、维生素和玉米籽粒中的次生代谢物受基因型影响大于环境。一些分析物表现出很强的基因型与环境的互作。这些结果可作为未来对转基因作物营养成分研究的参考值，并扩大常规成分数据集。这些结果可进一步作为通过分子育种和生物技术方法提高玉米籽粒营养价值的遗传基础。
