(FAO 1996) and only 150 crops are commercialized on a significant global scale. Over 50% of daily global requirement of protein and calories is met by just three crops maize, wheat and rice. It may interest us to know that global food security has become increasingly dependent on a handful of crops. It means neglected minor or promising niche as well. Underutilized resources are those resources with under-exploited potential for contributing to income generation, food security, health (nutritional/medicinal. Some species have replaced or fallen into disuse, while others have remained important in their centres of origin or secondary centre of diversity, but largely ignored commerce and science. The fate of the vast majority of the remaining agro-biodensity has been quite different. These commodity crops have been the focus of attention of markets and scientific research world wide. Research and history show that 40-100000 plant species have been largely and regularly used for industrial,cultural,food,fibres and medicinal purpose.Out of which about 7000 cultivated species are in use today around the world.30 or thereabout crops species have become intensively and widely used and are now the basis of much of the world's agriculture.
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