Name the oldest method of crop improvement.

Q. Name three major activities of crop improvement.

Q.

Explain the various methods of crop improvement. Name one improved variety of Rice, Maize, Soyabean, Sunflower and Mustard.

Q. Assertion :The purpose of crop improvement is done only to get higher yield. Reason: Plant breeders are concerned with crop improvement.

Q. What are the advantages of tissue culture methods over conventional methods of plant breeding in crop improvement programmes?