LyrArc Article Gist
This Guardian series explains what genetic diversity is and why it is so important in nature and important to feed the planet. It takes the simple banana and shows large plantations and companies produce the Cavendish banana and have let the thousands of other genetic varieties of bananas in Asia and Central America disappear. This is now affected by the Panama disease. In avocados the big farm companies have chosen the Haas and limited farming of other genetic varieties. The same is true of many of the vegetables and fruits one sees inthe supermarkets. 

When it comes to foodgrains there were hundreds of foodgrains in nature over long periods of history but big agriculture companies have limited foodgrains to corn, wheat, rice and a few species only.

Nature does not operate in this way as it operates with tremendous genetic varieties of  fruits or vegetables, and many species for foodgrains, so that if one is subject to disease or damaged, another more resilient one takes its place. To ensure that there is no food scarcity we have to embrace this kind of genetic diversity says this report in The Guardian.