Give scientific reasons: Artificial hybridisation is one of the major approaches of crop improvement programme.

(N/A) Artificial hybridisation is a crucial technique in crop improvement because it allows breeders to cross-breed selected plants with desirable traits to produce superior offspring.
$1$. Emasculation: If the female parent bears bisexual flowers,the removal of anthers from the flower bud before they dehisce is necessary using forceps. This prevents self-pollination.
$2$. Bagging: The emasculated flowers are covered with a bag,usually made of butter paper,to prevent contamination of the stigma by unwanted pollen grains.
$3$. Pollination: When the stigma of the bagged flower attains receptivity,mature pollen grains collected from the anthers of the male parent are dusted on the stigma,and the flowers are re-bagged to allow fruit development.