This study aimed to assess the implications of Zn enrichment in wheat grains as a function of contrasting genotypes, edaphic conditions and foliar fertilizers. Triticum aestivum L. varieties Roxo and Paiva were grown in four production fields, and sprayed with ZnSO₄ (0, 16.20 and 36.40 kg/ha) Zn-EDTA (0, 6.30 and 12.60 kg/ha) and Tecnifol Zinc (0, 3.90 and 7.80 kg/ha). The heterogeneous edaphic conditions of the wheat fields were chemically characterized, it being found that soil properties determine different Zn accumulation in the grains of both genotypes. Foliar spraying enhanced to different extents Zn content in the grains of both genotypes, but the average of enrichment indexes varied among the wheat fields. Zinc mostly accumulated in the embryo and vascular bundle and to a lesser extent in the endosperm. Grain yield and test weight sprayed by ZnSO₄ gave the highest values in both genotypes, but the opposite was found for Zn-EDTA. Considering the color parameters, lightness and red–green transitions were found to be a conjunction of genotype characteristics, fertilization types and edaphic conditions prevailing in each field. It is concluded that the index of Zn enrichment in wheat grains is a docket of edaphic conditions, genotype and type of fertilization.

中文翻译：

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两种普通小麦的不同基因型中的锌富集：浅层条件与叶面肥之间的相互作用

这项研究的目的是评估小麦籽粒中锌的富集与不同基因型，营养条件和叶面肥料的关系。在四个生产田中种植了普通小麦（Rotico）和Paiva（Paiva），并用ZnSO ₄喷雾（0、16.20和36.40 kg / ha）Zn-EDTA（0、6.30和12.60 kg / ha）和Tecnifol锌（0、3.90和7.80 kg / ha）。对麦田的非均质土壤条件进行了化学表征，发现土壤性质决定了两种基因型谷物中锌的积累量不同。叶面喷施两种基因型的小麦籽粒中锌含量均有不同程度的提高，但不同小麦田间的平均富集指数存在差异。锌主要聚集在胚胎和血管束中，而在胚乳中的聚集程度较小。ZnSO ₄喷涂的谷物产量和测试重量在两种基因型中均获得最高值，但在Zn-EDTA中却发现相反的结果。考虑到颜色参数，发现亮度和红绿色过渡是每个领域普遍存在的基因型特征，受精类型和土壤条件的结合。结论是，小麦籽粒中锌的富集指数与营养条件，基因型和施肥类型有关。