What do you mean by 'Golden rice' ?

Explanation

Golden rice is a variety of rice (Oryza sativa) produced through genetic engineering to biosynthesize the precursors of beta-carotene (provitamin A). Golden rice 2 has 23 times more provitamin A and its deficiency leads to childhood blindness.
Golden rice was designed to produce beta-carotone, a precursor of vitamin A in the part of rice that people eat, the endosperm. The rice plant can naturally produce betacarotene which is a carotenoid pigment that occurs in the leaves and is involved in photosynthesis. However, the plant does not normally produce the pigment in the endosperm since photosynthesis does not occur in the endosperm. Golden rice was created by transforming rice with beta-carotene biosynthesis genes psy, crt I and lyc gene.