Low bioavailability of Zn in soil generally results
in Zn deficiency in rice plants, and thus becomes
one of the common constraints for Zn biofortification
in rice grains (Zhao and Mcgrath, 2009). Zn deficiency
in rice can be alleviated through Zn fertilization,
which is considered to be a cost-effective method
to alleviate Zn malnutrition (Zhao and Mcgrath, 2009