Differences in concentrations and interrelationships of phytate, phosphorus, magnesium, calcium, zinc, and iron in wheat varieties grown under dryland and irrigated conditions

Abstract

Differences in concentrations and interrelationships of total P (TP), phytate P (PP), nonphytate P (NP), PP as percent of TP, Mg, Ca, zn, and Fe, together with yield, in grains of eight Iranian (Derakhshan, Harbash, Jawanjani, Jolgeh, Kalheidari, Koohrang, Ommid, and Roshan) and two foreign (Penjamo and Tobari) varieties of wheat (Triticum aestivum L.) grown under dryland and irrigated conditions were determined. Highly significant differences were obtained among varieties and between the two irrigation treatments for most of the variables under study. When wheat arieties were grown under dryland conditions, the grain yield and the concentrations of TP and PP were significantly reduced while those of NP, ca, and Mg were increased as compared with when grown under irrigation. Concentrations of the grain Zn and Fe did not seem to be afected by irrigation treatment. The four Pvariables (TP, PP, NP and PP as percent of TP) were found to be highly correlated under both dryland and irrigated conditions. A high-yielding variety with low phytate and high mineral contents was suggested as ideal to be grown in either dryland or irrigated farming areas