Which of the following is NOT an indigenous variety of food crop that is now eliminated from the local diet of Kerala?
Sweet potato
Indigenous varieties are native varieties of a locality that acquire natural immunity by adapting to the climate, soil properties and availability of food. Kerala had a variety of indigenous tuber crops that were the main part of the local diet in the past. Most of these are fast being eliminated too from the diet. Examples are Dioscorea (Kachil), taro and arrowroot (Koova). Sweet potatoes are indigenous to South America.