Abstract: Using fluorescence detector measured chlorophyll fluorescence parameters form rice flowering to mature-fully.The data analysis using SAS-Software and the results of the mutant (A846) compared with wild-type as flowing: 1) There is no difference in light energy absorption. 2) On Yield indicators, showed no differences in entire cycle but the indicators of NPQ is significant difference, with a trade-off qP indicators. 3) The occurrence of differences in flowering time (September 17). 4) According the fluorescence-characteristics between the mutant and wide-type rice, we can make sure that the period of photosynthesis is the mutant earlier to wild-type rice 3—5 days.