Question
By which of the following methods, new and better varieties of plants can be formed
Selection
Grafting
Hybridization
Hybridization followed by selection
Solution
D.
Hybridization followed by selection
Hybridization and Artificial Selection. Breeders commonly use artificial selection to produce new breeds from the variable offspring of hybrid crosses. In particular, they have long used a process, known as the backcross breeding method, to obtain new types of organisms. The approach is to identify a type possessing some desirable trait and then to hybridize it with a 'target stock' lacking the trait. If hybrids are obtained, the next step is to backcross them to the target stock in order to “introduce” the trait.
