The colour of high yieldding mexican wheats were not liked by the indian. It was originally red grained. Their cultivation was adopted in india on large scale only when exposure to gamma radiations converted them to amber grained. Which of following methods of plant breeding has been put into practise in the given case?

Options

A. Polyploid breeding
B. Interspecific hybridisation
C. Tissue culture
D. Mutation breeding

Answer

D