There are 300,000 edible plant species but in 2018, just four crops made up half of global production, and three — rice, maize, and wheat — accounted for 86% of all exports.

(SOURCE) https://www.cnn.com/2022/05/08/business/whatif-bamnut-sustainable-instant-noodles-climate-hnk-intl-spc/index.html