Lass record keeping than pedigree methods.
Inexpensive.
Easy to handle more crosses.
Large number of genotypes can be maintained.
Work well with un adopted germplasm.
Can be carried on for many years with little effort by the breeder.
Cultivar is developed antigenic mixture of pure lines,results in higher adaptability and stability of yields.
Environment change from season to season so adoptive on advantage shifts.
Must grow bulk seed late area of adoption.
Less efficient than pedigree methods on highly heritable traits (cud of early stage).
Not useful in selecting plant types at a competitive droidsan.
Final gnotype may be able to with stand environment stress.