Modern varieties (KDML 105, RD10 and Niaw Sanpatong) along with purple rice varieties (Kum Doi Saket and Kum 88 082) The correlation coefficient r = 0.48 (p 6 0.05) of GABA levels at 0 h and 24 h was positive indicating a genotype with a high GABA level at 0 h could be expected to be the genotype synthesized higher GABA at 24 h incubation (Fig. 1).showed the highest GABA content.