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Zinc Enrichment in Two Contrasting Genotypes of Triticum aestivum L. Grains: Interactions between Edaphic Conditions and Foliar Fertilizers
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Orientador(es)
Resumo(s)
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
Descrição
Palavras-chave
agronomic biofortification bread wheat grain yield zinc foliar application zinc grain content
Contexto Educativo
Citação
Luís, I.C.; Lidon, F.C.; Pessoa, C.C.; Marques, A.C.; Coelho, A.R.F.; Simões, M.; Patanita, M.; Dôres, J.; Ramalho, J.C.; Silva, M.M.; et al. Zinc Enrichment in Two Contrasting Genotypes of Triticum aestivum L. Grains: Interactions between Edaphic Conditions and Foliar Fertilizers. Plants 2021, 10, 204
Editora
MDPI