| Year of releases | No. of randomly selected varieties | Total no. of progenitors in 2nd, 3rd level of pedigree | Total no. of parents in 2nd, 3rd level of pedigree | Progenitors to parent ratio | Total no. of dominant progenitors in 2nd, 3rd level of pedigree | Total no. of dominant parents in 2nd, 3rd level of pedigree | Dominant Progenitors to dominant parent ratio |
| Between 1965-1999 | 22 | 274 | 152 | 1.80 | 85 | 10 | 8.5 |
| Between 2000-2011 | 14 | 214 | 93 | 2.30 | 66 | 10 | 6.6 |