Spatial-Temporal Variation of Grain Magnesium, Calcium and Their Response to Phosphorus Nutrition in Sweet Corn.

ABSTRACT: Sweet corn (Zea mays L. saccharata) is gaining global popularity as a staple crop and a vegetable due to its high nutritional value. However, information on grain magnesium (Mg) and calcium (Ca) status and their response to phosphorus (P) fertilization in sweet corn is still insufficient. In the current study, we combined the genotype evaluation and P gradient experiments to investigate how P supply influences the spatio-temporal variation of grain mineral nutrition (Mg and Ca) and their bioavailabilities in sweet corn. Increasing P decreased grain Ca by 16.7%, from 0.18 to 0.15 g kg^-1, but increased phytic acid phosphorus (PAP) concentration by 7.4%. Optimal P levels increased grain Mg concentration by 14.7%, from 1.36 to a peak of 1.56 g kg^-1; however,

SUBMITTER: Su D 

PROVIDER: S-EPMC11762451 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature