The name “Onion” originated from the Latin name unio, meaning oneness or unity, or a kind of single onion. A native of Central Asia, onion is now grown in more than 140 countries under temperate tropical conditions. In India onions have been adapted from very early times, before Christian era. Maharashtra, Karnataka, Gujarat, Bihar, Madhya Pradesh and Rajasthan are the main onion-growing states in the country. Barring north-eastern states and kerala, ...