gene responsible for dwarfing in wheat is

1. dee-geo-woo-gen
2. norin-10
3. cry gene
4. nod gene

Wheat Norin 10 is a semi-dwarf wheat cultivar with very large ears that was bred at an experimental station in Iwate Prefecture, Japan. In 1935, it was registered as a numbered cultivar by Ministry of Agriculture and Forestry Nōrinshō. Norin 10 grew to just two feet tall, instead of the usual four, which made it less prone to wind damage.

Norin 10 provided two very important genes, Rht1 and Rht2, that resulted in reduced-height wheats, thus allowing better nutrient uptake and tillerage (when heavily fertilised with nitrogen, tall varieties grow too high, become top-heavy, and lodge).