2022 Volume 67 Pages 57-63
Gamma-aminobutyric acid (GABA) with hypotensive and stress-reducing effects should be consumed daily. Due to the increased GABA content of germinated brown rice, we considered that normal polished rice should be replaced with polished rice from germinated brown rice. In the present study, 20 varieties and 23 variants of rice were investigated to identify genetic variations involved in the production and endosperm transfer of GABA due to germination. Variations between cultivars or strains were observed both in the production and in the endosperm transfer of GABA due to germination. And, the GABA content in brown rice and the rate of increase in GABA due to germination were inversely proportional. So, it is considered that the GABA content in brown rice is not an appropriate selection marker for breeding GABA-enriched white rice varieties. In order to perform the selection, it is necessary to investigate the production of GABA during germination.
