Laikanok rice The varieties of rice, cultivated in the present time of human's agricultural industry, is developed from the family of wild rice called "Oryza Gramineae" which scientist presumed that it originated in the tropical area of "Gondwanaland" continent 230 - 600 million years ago before the earth plates began to spilt and moved away, untill it becomes a familiar appearance of world's continent nowadays.
The result of ground shifting is that the family of wild rice was spreading into several parts of the world, especially in tropical climate zone of Africa, South Asia, Eastern Asia, Australia, Central and South America continent. Rice can grow on land with the sea level height upto 2,500 meters above sea level height and more. We can find rice cultivation both in tropical and warm weather area, and also in the low plain or high plateau, It covered the land from 35 degrees south to 53 degrees north. Human has selected several species of wild rice and reform them into modern well-fitting farmable one in order to fullfill their very high need for today unlimited consumable society. There are a lot of cross-over genetic modifications between rice and its relevants weed for more suitable adaptive rice to each spetific ecosystem. There for, many new species of rice has emerged in the world which have high production rate and can be harvested all the year which called "Hybrids Rice" and there are more than 120,000 of hybrids rice all around the world. Today, we can separate rice species' using in agriculture system into two main types which are the African rice and Asia rice.
