Resumo

MARTINEZ CRUZ, Michel; ORTIZ PEREZ, Rodobaldo  e  RAIGON, Maria D. Phosphorus, potassium, zinc, iron, sodium, calcium and magnesium, contents and their variability analysis in Cuban maize accessions. cultrop [online]. 2017, vol.38, n.1, pp.92-101. ISSN 0258-5936.

In our country, corn is cultivated since the time of the aborigines and it is a staple food in human nutrition, livestock and poultry; it is the second major cereal and has high preference of consumption by the population. In Cuba, there are six races of maize with a high morphoagronomic diversity, which has been extensively studied; however, diversity and nutritional characteristics of the plant is not known or varieties improved for this purpose have not been introduced. This work was carried out on a sample of 106 accessions, which included materials in situ and ex situ conserved. The aim of the study was to evaluate the degree of variability and morphoagronomic mineral content of these genotypes. The results allowed detect morphoagronomic variability in the accessions; also the phosphorus and calcium content was high while magnesium, potassium and sodium content was low, resulting in intermediate iron and zinc content in related to standards reported in the literature for this crop. The values of these elements in corn grain, are influenced by the concentrations present in soil or spiked through mineral fertilization, which can be variable depending on conditions. Therefore, it is recommended a deeper study on the variability of mineral concentrations elements in maize in Cuba

Palavras-chave : phenotypic; nutritional value; variation; Zea mays.

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