Outbreeding defines the process in which the mating of the animals is performed which belongs to the different breed. This technique helps in preventing self-pollination and inbreeding depression. The devices which are used to prevent autogamy are: The male and the female reproductive organs in the flower do not get matured at the same time (protandry and protogyny).  The male and the female flowers are present on the different plants (monoecious). The stigma of the female flower does not recognise the pollen from the anther of the flower on same plant (self-incompatibility)