The biggest constraint of plant breeding is:
The availability of desirable gene is very difficult because first the desirable and profitable genes are not found and if they are found then they are linked with undesirable gene whose extraction becomes very difficult.
Infrastructure and trained manpower is very common and can be found easily with money.
Many new technologies are developed through which the transfer of genes is possible.
Hence, (a) is the correct option.
Couldn't generate an explanation.
Generated by AI. May contain inaccuracies — always verify with your textbook.