That is a great news for Brazil as a country to adopt Bitcoin as mode of payment, this show that some government are understanding the existence of Bitcoin as alternative to fiat cryptocurrency. I believe with this, their economy will improve because people at other countries can able to do easy transactions without following the long processing of banks as third party.
This must be the reason why there is a pump of BTC price in Brazil.
I don't think the current adoption of Bitcoin in Brazil have easily have affect in current market price of BTC but with time I believe much will happen.