Write briefly about the crop RICE.
Answers
Answer:
Rice is the most important human food crop in the world, directly feeding more people than any other crop. In 2012, nearly half of world’s population – more than 3 billion people – relied on rice every day. It is also the staple food across Asia where around half of the world’s poorest people live and is becoming increasingly important in Africa and Latin America.
Rice has also fed more people over a longer time than has any other crop. It is spectacularly diverse, both in the way it is grown and how it is used by humans. Rice is unique because it can grow in wet environments that other crops cannot survive in. Such wet environments are abundant across Asia. The domestication of rice ranks as one of the most important developments in history and now thousands of rice varieties are cultivated on every continent except Antarctica.
What types of rice are grown?
Two rice species are important cereals for human nutrition: Oryza sativa, grown worldwide, and O. glaberrima, grown in parts of West Africa. These two cultigens—species known only by cultivated plants—belong to a genus that includes about 25 other species, although the taxonomy is still a matter of research and debate.
Oryza is thought to have originated about 14 million years ago in Malesia.Since then, it has evolved, diversified, and dispersed, and wild Oryza species are now distributed throughout the tropics. Their genomes can be classified into 11 groups labeled AA to LL, and most of the species can be grouped into four complexes of closely related species in two major sections of the genus (Table 1.1). Just two species, both diploids, have no close relatives and are placed in their own sections of the genus: O. australiensis and O. brachyantha.
Explanation:
Answer:
hope its helps u.......
