HYBRIDIZATION - ITS CONSEQUENCE, HETEROSIS, INBREEDING AND PROPERTIES OF RANDOM MATING POPULATION

摘要

It is the technique of crossing two parents preferably genetically different.It widens the genetic base of the hybrid thus, rendering it higher yielding and better adaptable to wider climatic situations. The phenomenon, which leads to superior performance of the F! hybrid, is known as hybrid vigour or heterosis. Hybrid vigour may be controlled by dominance or over - dominance gene action. Dominance is generally a multigene concept while over-dominance refers to a single locus.