Q.Dwarfing gene of wheat is :

The Green Revolution refers to the dramatic increase in Indian food-grain production achieved through plant breeding, mainly from the mid-1960s onward, which took the country from struggling to feed its own population to being able to export food grain. It rested chiefly on the introduction of semi-dwarf, high-yielding, disease-resistant varieties of wheat and rice — wheat varieties such as Sonalika and Kalyan Sona (building on Norman Borlaug's semi-dwarf wheat), and rice varieties derived from IR-8 and Taichung Native-1, later improved further into Jaya and Ratna. Between 1960 and 2000, Indian wheat production rose from 11 to 75 million tonnes and rice from 35 to 89.5 million …