Brassica contains many important crop plants, which includes mustard. There are six cultivated species of the genus represented by the genomes A, B and C. There are also three allotetralpoid species- B.napus (AACC=10+9 =2x=2n=38), B.juncea (AABB=10+8=2x=2n=36) and B.carinata (BBCC=8+9 2n=2x==34). As we know, genes that control specific traits in diploid organism gets doubled when the same genomic composition is doubled to auto tetraploid; again, each genic combination acts in controlling all forms/types of traits of all organism. The B. napus has a narrow gene pool from intensive breeding for high-quality oil and meal traits, while the B. nigra is undeveloped landrace crop, which is rich in genetic diversity. B. nigra produces black mustard seed which is hardy, suitable as a rainfed crop under varied climatic conditions and provides good yield under extreme conditions. The B genome of B. nigra is an important source of useful genes including disease and pest resistance and other biotic as well as abiotic stress tolerances. The genome of B. carinata exhibits resistance to drought, pod shattering and better performance under saline and late sowing conditions. Developing a “super” Brassica has been of great interest to scientists both in Bangladesh and worldwide. Research has been undertaken to develop variety having hexaploid genomic constitution (AABBCC) for cultivation. This attempt, in fact, will be very good and high-level contribution to scientific knowledge as well as materials having wider adaptation through genes of different species in combination. To develop such a variety, multiple techniques are used in combination. This includes hybridization among the parents of definite genome combination followed by colchicine treatment of the F1 germplasm. These materials are tested through chromosome number identification systems. In case of brassica hexaploidy covering ABC genomes marker-assisted selection and followed by field selection will reduce gestation period of breeding. In case of this hexaploidy having 27 (8+9+10) chromosomes from 3 genomes when duplicated will be 54. but there is, however, possibility of losing one or two sets of chromosomes which, if takes place will create variations of different degree in F2 and subsequent selections. According to scientific information available in Bangladesh, hexaploidy brassica populations of F2 have produced higher yields than their parents. This indicates that further selection from the transgressive segregant will help selection for higher-yielding lines. Also, these lines will have a higher tolerance to stress conditions than the parents. Assistance of Adeeba Raihan, Senior Scientist, ASRBC, ACI Limited is highly acknowledged. Professor Lutfur Rahman Advisor, ASRBC, ACI Agribusiness & Advisory Editor, Biolife