The somaclonal variant of the Brassica juncea variety Varun has been released for commercial cultivation as: (MPSC Mains pepar-2, 2016)

✅Explanation: Pusa Jai Kisan is a somaclonal variant (a plant regenerated from tissue culture) of the Brassica juncea (Indian mustard) variety Varun. It was released for commercial cultivation due to its improved agronomic traits, such as higher yield and resistance to diseases like white rust.