Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_61044 ( "Date" text, "\"Inventor\"" text, "Marketed as" text, "Mutated From" text, "Assignee" text, "Habit" text, "Pattern" text, "Earlier" text, "Color" text, "Plant Patent Number" text )

### Question ###
What's the mutated having a patent number of US plant patent 9645?

### Accurate SQL ###

SELECT "Mutated From" FROM table_61044 WHERE "Plant Patent Number" = 'us plant patent 9645'