Crop type and status of improvement

Grain [Zn] (mg/kg)

Literature

Tetraploid wheat

Durum wheat

17.0 - 28.0

Cakmak et al. [51]

Old cultivars

33.7 - 41.4

Ficco et al. [49]

Modern varieties

28.5 - 46.3

Ficco et al. [49]

Advance lines

Landraces

29.1 - 40.9

44.9 - 49.8

Ficco et al. (2009)

Monasterio and Graham [52]

Hexaploid wheat

Bread wheat

8.0 - 61.0

Zhao et al. [53] ; Abrar et al. [54]

Cakmak et al. [55]

Advance lines

29.0 - 39.5

Velu et al. [50]

Old cultivars

38.1

Abrar et al. [54]

Wild emmer wheat

Maize

Teff

Sorghumγ

39.0 - 115

15.0 - 47.0

11.0

1.12 - 7.58

Gomer-Becerra et al. [70]

Ortiz-Monasterio et al. [20] , Valéria et al. [57] ;

Amede et al. [56]

Badigannavar et al. [58] , Kayode et al. [59]