The colour of high yielding Mexican wheats were not liked by the indians. 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 practice in the given case ?

Options

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

Answer

A