Question

Differentiate between selection and hybridization.

Answer 1

Sr. No.	Aspect	Selection	Hybridization
1.	Definition	The process of choosing plants with desirable traits from a population to grow the next generation.	Method of producing new crop varieties by crossing two or more plants with unlike genetic constitutions.
2.	Purpose	To isolate and maintain superior individuals already existing in the population.	To combine desired characters from different plants to create new combinations and variability.
3.	Types	Mass selection, pure line selection, clonal selection (based on propagation method).	Intravarietal, intervarietal, interspecific, intergeneric, and introgressive hybridization.
4.	Genetic Variation	Relies on existing genetic variability or mutations within the population.	Creates new genetic variability by combining diverse parent genotypes.
5.	Application Process	Involves repeated selection and multiplication of superior plants over generations.	Involves selection of parents, emasculation (removal of stamens), controlled cross-pollination, and selection of superior hybrids.