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초록·키워드
Zinc (Zn) deficiency is considered one of the most widespread problems of human malnutrition. Zinc deficiency in human results from diets that are low in bioavailable Zn. Cereals and legume seeds are poor sources of Zn, because they are high in phytic acid, which strongly make poorly soluble Zn-phytate complexes. In arid and semi-arid regions like Iran, soils under cereal cultivation are high in total Zn concentration but readily plant available Zn is limited. Several approaches such as genetic biofortification and agronomic biofortification have been used for increasing Zn content of cereals. Agronomic biofortification increases Zn concentration in the edible parts of the plants through agronomic practices. Application of inorganic Zn fertilizers and organic amendments like crop residues is an important approach for agronomic biofortification. Thus, the present study was conducted with the aim of evaluating crop residues effects on plant Zn availability in soil and on Zn concentration in wheat grain. The experiment was conducted in a greenhouse at Isfahan University of Technology (IUT), Isfahan, Iran. The surface soil sample (0-20 cm) was collected from Rudasht agricultural research station in the southeast of Isfahan city in the central part of Iran. Residues of safflower (Carthamus tinctorius L.), sunflower (Heliantus annus L.), bean (Phaseolus vulgaris L.), clover (Trifolium pretense L.) and sorghum (Sorghum bicolor L.) were used as soil amendments at an application rate of 2.4 g dry matter kg-1. Two weeks after incorporating the residues into the soil, seeds of two wheat cultivars including Kavir as Zn-inefficien ... 전체 초록 보기
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