Scientists have created a plant that rejects its own pollen or pollen of close relatives, according to new research. Self-pollination or 'selfing' can be bad for a plant resulting in inbreeding and less healthy offspring. This breakthrough could be used to breed stronger more resilient crops faster and at lower cost; a new approach in the quest for a secure and plentiful food supply.

Source: Scientists transfer genes from poppy to a different species to prevent self-pollination