Genetic variation of phytate and ionorganic phosphorus in maize population

Abstract

Analysis of 60 maize populations was conducted to identify genotypes that had either low or high concentration of phytate. Genetic variability in seed phytate content was observed, with values ranging from 1,147 to 4, 13 g kg-1. Inorganic phosphorus (Pi) concentrations were between 0, 35 and 1, 29 and averaged 0, 65 g kg-1. Three groups of populations were identified as having low, intermediate and high phytate content. The low phytate concentration was measured in eight, intermediate in 25 and high in 27 populations. Positive correlation was found between phytate and protein. Population 216 had the lowest phytate concentration of 1, 14 gkg-1, and a Pi concentration 40% greater than Pi mean but lower than average protein content. This population will be used for further breeding genotypes with low phytate content and good agronomic traits.

Analizirano je 60 populacija kukuruza u cilju identifikacije genotipova koji imaju nizak ili visok sadržaj fitina. Utvrđena je genetička varijabilnost u sadržaju fitina u opsegu od 1,147 do 4,13 g kg-1. Sadržaj neorganskog fosfora je bila između 0,35 i 1,29, prosečno 0,65 g kg-1. Tri grupe populacija su identifikovane koje sadrže nizak, srednji i visok sadržaj fitina. U osam populacija izmerena je niska koncentracija fitina, u 25 srednja i u 27 visoka. Pozitivna korelacija je utvrđena između sadržaja fitina i proteina. Populacija 216 ima najnižu koncetraciju fitina 1,14 gkg-1, i Pi koncetraciju 40% veću nego prosek Pi ali niži od proseka sadržaj proteina. Ova populacija će se koristiti za dalju selekciju genotipova sa niskim sadržajem fitina i dobrim agronomskim osobinama.